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Sigma

Sigma rules for DragonForce

500 rules · scoped to actor · back to DragonForce
Direct rules mention this entity in their title or description. Related rules cover the techniques this entity is known to use.

Detection rules

50 of 500
related high
Suspicious Process Parents
Detects suspicious parent processes that should not have any children or should only have a single possible child program
status test author Florian Roth (Nextron Systems) id cbec226f-63d9-4eca-9f52-dfb6652f24df license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Process Parents
id: cbec226f-63d9-4eca-9f52-dfb6652f24df
status: test
description: Detects suspicious parent processes that should not have any children or should only have a single possible child program
references:
    - https://twitter.com/x86matthew/status/1505476263464607744?s=12
    - https://svch0st.medium.com/stats-from-hunting-cobalt-strike-beacons-c17e56255f9b
author: Florian Roth (Nextron Systems)
date: 2022-03-21
modified: 2022-09-08
tags:
    - attack.stealth
    - attack.t1036
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith:
            - '\minesweeper.exe'
            - '\winver.exe'
            - '\bitsadmin.exe'
    selection_special:
        ParentImage|endswith:
            - '\csrss.exe'
            - '\certutil.exe'
         # - '\schtasks.exe'
            - '\eventvwr.exe'
            - '\calc.exe'
            - '\notepad.exe'
    filter_special:
        Image|endswith:
            - '\WerFault.exe'
            - '\wermgr.exe'
            - '\conhost.exe' # csrss.exe, certutil.exe
            - '\mmc.exe'     # eventvwr.exe
            - '\win32calc.exe' # calc.exe
            - '\notepad.exe'
    filter_null:
        Image: null
    condition: selection or ( selection_special and not 1 of filter_* )
falsepositives:
    - Unknown
level: high
related high
Renamed Plink Execution
Detects the execution of a renamed version of the Plink binary
status test author Nasreddine Bencherchali (Nextron Systems) id 1c12727d-02bf-45ff-a9f3-d49806a3cf43 license Sigma · DRL-1.1
view Sigma YAML
title: Renamed Plink Execution
id: 1c12727d-02bf-45ff-a9f3-d49806a3cf43
status: test
description: Detects the execution of a renamed version of the Plink binary
references:
    - https://thedfirreport.com/2022/06/06/will-the-real-msiexec-please-stand-up-exploit-leads-to-data-exfiltration/
    - https://the.earth.li/~sgtatham/putty/0.58/htmldoc/Chapter7.html
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-06
modified: 2023-02-03
tags:
    - attack.stealth
    - attack.t1036
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - OriginalFileName: 'Plink'
        - CommandLine|contains|all:
              - ' -l forward'
              - ' -P '
              - ' -R '
    filter:
        Image|endswith: '\plink.exe'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high
related high
OpenCanary - TFTP Request
Detects instances where a TFTP service on an OpenCanary node has had a request.
status test author Security Onion Solutions id b4e6b016-a2ac-4759-ad85-8000b300d61e license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - TFTP Request
id: b4e6b016-a2ac-4759-ad85-8000b300d61e
status: test
description: Detects instances where a TFTP service on an OpenCanary node has had a request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.exfiltration
    - attack.t1041
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 10001
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
OpenCanary - NMAP NULL Scan
Detects instances where an OpenCanary node has been targeted by a NMAP NULL Scan
status experimental author Marco Pedrinazzi (@pedrinazziM) id 68b8547b-107f-43f3-97fb-900a7d63c190 license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - NMAP NULL Scan
id: 68b8547b-107f-43f3-97fb-900a7d63c190
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP NULL Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5003
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
OpenCanary - NMAP OS Scan
Detects instances where an OpenCanary node has been targeted by a NMAP OS Scan
status experimental author Marco Pedrinazzi (@pedrinazziM) id e8a677fd-248c-4eab-94df-de2f6f645884 license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - NMAP OS Scan
id: e8a677fd-248c-4eab-94df-de2f6f645884
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP OS Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5002
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
OpenCanary - NMAP FIN Scan
Detects instances where an OpenCanary node has been targeted by a NMAP FIN Scan
status experimental author Marco Pedrinazzi (@pedrinazziM) id eae8c0c8-e5da-450a-9d7d-66aa56cd26b6 license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - NMAP FIN Scan
id: eae8c0c8-e5da-450a-9d7d-66aa56cd26b6
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP FIN Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5005
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
OpenCanary - NMAP XMAS Scan
Detects instances where an OpenCanary node has been targeted by a NMAP XMAS Scan
status experimental author Marco Pedrinazzi (@pedrinazziM) id d7553d7b-f485-479c-b192-cdac6edd83a4 license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - NMAP XMAS Scan
id: d7553d7b-f485-479c-b192-cdac6edd83a4
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP XMAS Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5004
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
OpenCanary - Host Port Scan (SYN Scan)
Detects instances where an OpenCanary node has been targeted by a SYN port scan.
status experimental author Marco Pedrinazzi (@pedrinazziM) id 974be8d2-283e-4033-ab08-7505b84204d0 license Sigma · DRL-1.1
view Sigma YAML
title: OpenCanary - Host Port Scan (SYN Scan)
id: 974be8d2-283e-4033-ab08-7505b84204d0
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a SYN port scan.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5001
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
HackTool - WinPwn Execution - ScriptBlock
Detects scriptblock text keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
status test author Swachchhanda Shrawan Poudel id 851fd622-b675-4d26-b803-14bc7baa517a license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - WinPwn Execution - ScriptBlock
id: 851fd622-b675-4d26-b803-14bc7baa517a
related:
    - id: d557dc06-62e8-4468-a8e8-7984124908ce
      type: similar
status: test
description: |
    Detects scriptblock text keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
author: Swachchhanda Shrawan Poudel
date: 2023-12-04
references:
    - https://github.com/S3cur3Th1sSh1t/WinPwn
    - https://www.publicnow.com/view/EB87DB49C654D9B63995FAD4C9DE3D3CC4F6C3ED?1671634841
    - https://reconshell.com/winpwn-tool-for-internal-windows-pentesting-and-ad-security/
    - https://github.com/redcanaryco/atomic-red-team/blob/4d6c4e8e23d465af7a2388620cfe3f8c76e16cf0/atomics/T1082/T1082.md
    - https://grep.app/search?q=winpwn&filter[repo][0]=redcanaryco/atomic-red-team
tags:
    - attack.credential-access
    - attack.discovery
    - attack.execution
    - attack.privilege-escalation
    - attack.t1046
    - attack.t1082
    - attack.t1106
    - attack.t1518
    - attack.t1548.002
    - attack.t1552.001
    - attack.t1555
    - attack.t1555.003
logsource:
    category: ps_script
    product: windows
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Offline_Winpwn'
            - 'WinPwn '
            - 'WinPwn.exe'
            - 'WinPwn.ps1'
    condition: selection
falsepositives:
    - As the script block is a blob of text. False positive may occur with scripts that contain the keyword as a reference or simply use it for detection.
level: high
related high
HackTool - WinPwn Execution
Detects commandline keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
status test author Swachchhanda Shrawan Poudel id d557dc06-62e8-4468-a8e8-7984124908ce license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - WinPwn Execution
id: d557dc06-62e8-4468-a8e8-7984124908ce
related:
    - id: 851fd622-b675-4d26-b803-14bc7baa517a
      type: similar
status: test
description: |
    Detects commandline keywords indicative of potential usge of the tool WinPwn. A tool for Windows and Active Directory reconnaissance and exploitation.
author: Swachchhanda Shrawan Poudel
date: 2023-12-04
references:
    - https://github.com/S3cur3Th1sSh1t/WinPwn
    - https://www.publicnow.com/view/EB87DB49C654D9B63995FAD4C9DE3D3CC4F6C3ED?1671634841
    - https://reconshell.com/winpwn-tool-for-internal-windows-pentesting-and-ad-security/
    - https://github.com/redcanaryco/atomic-red-team/blob/4d6c4e8e23d465af7a2388620cfe3f8c76e16cf0/atomics/T1082/T1082.md
    - https://grep.app/search?q=winpwn&filter[repo][0]=redcanaryco/atomic-red-team
tags:
    - attack.credential-access
    - attack.discovery
    - attack.execution
    - attack.privilege-escalation
    - attack.t1046
    - attack.t1082
    - attack.t1106
    - attack.t1518
    - attack.t1548.002
    - attack.t1552.001
    - attack.t1555
    - attack.t1555.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - 'Offline_Winpwn'
            - 'WinPwn '
            - 'WinPwn.exe'
            - 'WinPwn.ps1'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
HackTool - winPEAS Execution
WinPEAS is a script that search for possible paths to escalate privileges on Windows hosts. The checks are explained on book.hacktricks.xyz
status test author Georg Lauenstein (sure[secure]) id 98b53e78-ebaf-46f8-be06-421aafd176d9 license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - winPEAS Execution
id: 98b53e78-ebaf-46f8-be06-421aafd176d9
status: test
description: WinPEAS is a script that search for possible paths to escalate privileges on Windows hosts. The checks are explained on book.hacktricks.xyz
references:
    - https://github.com/carlospolop/PEASS-ng
    - https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation
author: Georg Lauenstein (sure[secure])
date: 2022-09-19
modified: 2023-03-23
tags:
    - attack.privilege-escalation
    - attack.discovery
    - attack.t1082
    - attack.t1087
    - attack.t1046
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'winPEAS.exe'
        - Image|endswith:
              - '\winPEASany_ofs.exe'
              - '\winPEASany.exe'
              - '\winPEASx64_ofs.exe'
              - '\winPEASx64.exe'
              - '\winPEASx86_ofs.exe'
              - '\winPEASx86.exe'
    selection_cli_option:
        CommandLine|contains:
            - ' applicationsinfo' # Search installed applications information
            - ' browserinfo' # Search browser information
            - ' eventsinfo' # Display interesting events information
            - ' fileanalysis' # Search specific files that can contains credentials and for regexes inside files
            - ' filesinfo' # Search generic files that can contains credentials
            - ' processinfo' # Search processes information
            - ' servicesinfo' # Search services information
            - ' windowscreds' # Search windows credentials
    selection_cli_dl:
        CommandLine|contains: 'https://github.com/carlospolop/PEASS-ng/releases/latest/download/'
    selection_cli_specific:
        - ParentCommandLine|endswith: ' -linpeas'
        - CommandLine|endswith: ' -linpeas'
    condition: 1 of selection_*
falsepositives:
    - Unlikely
level: high
related high
Remote DCOM/WMI Lateral Movement
Detects remote RPC calls that performs remote DCOM operations. These could be abused for lateral movement via DCOM or WMI.
status test author Sagie Dulce, Dekel Paz id 68050b10-e477-4377-a99b-3721b422d6ef license Sigma · DRL-1.1
view Sigma YAML
title: Remote DCOM/WMI Lateral Movement
id: 68050b10-e477-4377-a99b-3721b422d6ef
status: test
description: Detects remote RPC calls that performs remote DCOM operations. These could be abused for lateral movement via DCOM or WMI.
references:
    - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9
    - https://github.com/zeronetworks/rpcfirewall
    - https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/
author: Sagie Dulce, Dekel Paz
date: 2022-01-01
tags:
    - attack.lateral-movement
    - attack.execution
    - attack.t1021.003
    - attack.t1047
logsource:
    product: rpc_firewall
    category: application
    definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:367abb81-9844-35f1-ad32-98f038001003'
detection:
    selection:
        EventLog: RPCFW
        EventID: 3
        InterfaceUuid:
            - 4d9f4ab8-7d1c-11cf-861e-0020af6e7c57
            - 99fcfec4-5260-101b-bbcb-00aa0021347a
            - 000001a0-0000-0000-c000-000000000046
            - 00000131-0000-0000-c000-000000000046
            - 00000143-0000-0000-c000-000000000046
            - 00000000-0000-0000-c000-000000000046
    condition: selection
falsepositives:
    - Some administrative tasks on remote host
level: high
related high
WMImplant Hack Tool
Detects parameters used by WMImplant
status test author NVISO id 8028c2c3-e25a-46e3-827f-bbb5abf181d7 license Sigma · DRL-1.1
view Sigma YAML
title: WMImplant Hack Tool
id: 8028c2c3-e25a-46e3-827f-bbb5abf181d7
status: test
description: Detects parameters used by WMImplant
references:
    - https://github.com/FortyNorthSecurity/WMImplant
author: NVISO
date: 2020-03-26
modified: 2022-12-25
tags:
    - attack.execution
    - attack.t1047
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'WMImplant'
            - ' change_user '
            - ' gen_cli '
            - ' command_exec '
            - ' disable_wdigest '
            - ' disable_winrm '
            - ' enable_wdigest '
            - ' enable_winrm '
            - ' registry_mod '
            - ' remote_posh '
            - ' sched_job '
            - ' service_mod '
            - ' process_kill '
            # - ' process_start '
            - ' active_users '
            - ' basic_info '
            # - ' drive_list '
            # - ' installed_programs '
            - ' power_off '
            - ' vacant_system '
            - ' logon_events '
    condition: selection
falsepositives:
    - Administrative scripts that use the same keywords.
level: high
related high
Suspicious Encoded Scripts in a WMI Consumer
Detects suspicious encoded payloads in WMI Event Consumers
status test author Florian Roth (Nextron Systems) id 83844185-1c5b-45bc-bcf3-b5bf3084ca5b license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Encoded Scripts in a WMI Consumer
id: 83844185-1c5b-45bc-bcf3-b5bf3084ca5b
status: test
description: Detects suspicious encoded payloads in WMI Event Consumers
references:
    - https://github.com/RiccardoAncarani/LiquidSnake
author: Florian Roth (Nextron Systems)
date: 2021-09-01
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.t1047
    - attack.persistence
    - attack.t1546.003
logsource:
    product: windows
    category: wmi_event
detection:
    selection_destination:
        Destination|base64offset|contains:
            - 'WriteProcessMemory'
            - 'This program cannot be run in DOS mode'
            - 'This program must be run under Win32'
    condition: selection_destination
falsepositives:
    - Unknown
level: high
related high
Suspicious WmiPrvSE Child Process
Detects suspicious and uncommon child processes of WmiPrvSE
status test author Vadim Khrykov (ThreatIntel), Cyb3rEng, Florian Roth (Nextron Systems) id 8a582fe2-0882-4b89-a82a-da6b2dc32937 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious WmiPrvSE Child Process
id: 8a582fe2-0882-4b89-a82a-da6b2dc32937
related:
    - id: 692f0bec-83ba-4d04-af7e-e884a96059b6
      type: similar
    - id: d21374ff-f574-44a7-9998-4a8c8bf33d7d
      type: similar
    - id: 18cf6cf0-39b0-4c22-9593-e244bdc9a2d4
      type: obsolete
status: test
description: Detects suspicious and uncommon child processes of WmiPrvSE
references:
    - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/
    - https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml
    - https://blog.osarmor.com/319/onenote-attachment-delivers-asyncrat-malware/
    - https://twitter.com/ForensicITGuy/status/1334734244120309760
author: Vadim Khrykov (ThreatIntel), Cyb3rEng, Florian Roth (Nextron Systems)
date: 2021-08-23
modified: 2023-11-10
tags:
    - attack.execution
    - attack.stealth
    - attack.t1047
    - attack.t1204.002
    - attack.t1218.010
logsource:
    product: windows
    category: process_creation
detection:
    selection_parent:
        ParentImage|endswith: '\wbem\WmiPrvSE.exe'
    selection_children_1:
        # TODO: Add more LOLBINs or suspicious processes that make sens in your environment
        Image|endswith:
            - '\certutil.exe'
            - '\cscript.exe'
            - '\mshta.exe'
            - '\msiexec.exe'
            - '\regsvr32.exe'
            - '\rundll32.exe'
            - '\verclsid.exe'
            - '\wscript.exe'
    selection_children_2:
        # This is in a separate selection due to the nature of FP generated with CMD
        Image|endswith: '\cmd.exe'
        CommandLine|contains:
            - 'cscript'
            - 'mshta'
            - 'powershell'
            - 'pwsh'
            - 'regsvr32'
            - 'rundll32'
            - 'wscript'
    filter_main_werfault:
        Image|endswith: '\WerFault.exe'
    filter_main_wmiprvse:
        Image|endswith: '\WmiPrvSE.exe' # In some legitimate case WmiPrvSE was seen spawning itself
    filter_main_msiexec:
        Image|endswith: '\msiexec.exe'
        CommandLine|contains: '/i '
    condition: selection_parent and 1 of selection_children_* and not 1 of filter_main_*
falsepositives:
    - Unknown
level: high
related high
HackTool - Potential Impacket Lateral Movement Activity
Detects wmiexec/dcomexec/atexec/smbexec from Impacket framework
status stable author Ecco, oscd.community, Jonhnathan Ribeiro, Tim Rauch id 10c14723-61c7-4c75-92ca-9af245723ad2 license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - Potential Impacket Lateral Movement Activity
id: 10c14723-61c7-4c75-92ca-9af245723ad2
related:
    - id: e31f89f7-36fb-4697-8ab6-48823708353b
      type: obsolete
status: stable
description: Detects wmiexec/dcomexec/atexec/smbexec from Impacket framework
references:
    - https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/wmiexec.py
    - https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/atexec.py
    - https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/smbexec.py
    - https://github.com/SecureAuthCorp/impacket/blob/8b1a99f7c715702eafe3f24851817bb64721b156/examples/dcomexec.py
    - https://www.elastic.co/guide/en/security/current/suspicious-cmd-execution-via-wmi.html
author: Ecco, oscd.community, Jonhnathan Ribeiro, Tim Rauch
date: 2019-09-03
modified: 2023-02-21
tags:
    - attack.execution
    - attack.t1047
    - attack.lateral-movement
    - attack.t1021.003
logsource:
    category: process_creation
    product: windows
detection:
    selection_other:
        # *** wmiexec.py
        #    parent is wmiprvse.exe
        #    examples:
        #       cmd.exe /Q /c whoami 1> \\127.0.0.1\ADMIN$\__1567439113.54 2>&1
        #       cmd.exe /Q /c cd  1> \\127.0.0.1\ADMIN$\__1567439113.54 2>&1
        # *** dcomexec.py -object MMC20
        #   parent is mmc.exe
        #   example:
        #       "C:\Windows\System32\cmd.exe" /Q /c cd  1> \\127.0.0.1\ADMIN$\__1567442499.05 2>&1
        # *** dcomexec.py -object ShellBrowserWindow
        #  runs %SystemRoot%\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {c08afd90-f2a1-11d1-8455-00a0c91f3880} but parent command is explorer.exe
        #  example:
        #   "C:\Windows\System32\cmd.exe" /Q /c cd \ 1> \\127.0.0.1\ADMIN$\__1567520103.71 2>&1
        # *** smbexec.py
        #   parent is services.exe
        #   example:
        #       C:\Windows\system32\cmd.exe /Q /c echo tasklist ^> \\127.0.0.1\C$\__output 2^>^&1 > C:\Windows\TEMP\execute.bat & C:\Windows\system32\cmd.exe /Q /c C:\Windows\TEMP\execute.bat & del C:\Windows\TEMP\execute.bat
        ParentImage|endswith:
            - '\wmiprvse.exe'        # wmiexec
            - '\mmc.exe'        # dcomexec MMC
            - '\explorer.exe'        # dcomexec ShellBrowserWindow
            - '\services.exe'        # smbexec
        CommandLine|contains|all:
            - 'cmd.exe'
            - '/Q'
            - '/c'
            - '\\\\127.0.0.1\\'
            - '&1'
    selection_atexec:
        ParentCommandLine|contains:
            - 'svchost.exe -k netsvcs'       # atexec on win10 (parent is "C:\Windows\system32\svchost.exe -k netsvcs")
            - 'taskeng.exe'       # atexec on win7 (parent is "taskeng.exe {AFA79333-694C-4BEE-910E-E57D9A3518F6} S-1-5-18:NT AUTHORITY\System:Service:")
            # cmd.exe /C tasklist /m > C:\Windows\Temp\bAJrYQtL.tmp 2>&1
        CommandLine|contains|all:
            - 'cmd.exe'
            - '/C'
            - 'Windows\Temp\'
            - '&1'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: high
related high
Suspicious Autorun Registry Modified via WMI
Detects suspicious activity where the WMIC process is used to create an autorun registry entry via reg.exe, which is often indicative of persistence mechanisms employed by malware.
status experimental author Swachchhanda Shrawan Poudel (Nextron Systems) id c80e66d8-1780-48a9-b412-46663fd21ac0 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Autorun Registry Modified via WMI
id: c80e66d8-1780-48a9-b412-46663fd21ac0
status: experimental
description: |
    Detects suspicious activity where the WMIC process is used to create an autorun registry entry via reg.exe, which is often indicative of persistence mechanisms employed by malware.
references:
    - Internal Research
    - https://github.com/HackTricks-wiki/hacktricks/blob/e4c7b21b8f36c97c35b7c622732b38a189ce18f7/src/windows-hardening/windows-local-privilege-escalation/privilege-escalation-with-autorun-binaries.md
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-02-17
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.persistence
    - attack.t1547.001
    - attack.t1047
logsource:
    category: process_creation
    product: windows
detection:
    selection_execution_img:
        - Image|endswith: '\wmic.exe'
        - OriginalFileName: 'wmic.exe' # wmic process call create 'reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Desktops /t REG_SZ /d "\"C:\Users\user\AppData\Roaming\Microsoft\tre\Desktops.exe\" random" /f'
        - ParentImage|endswith: '\wmiprvse.exe'
    selection_execution_cmd:
        CommandLine|contains|all:
            - 'reg'
            - ' add '
        CommandLine|contains:
            - '\Software\Microsoft\Windows\CurrentVersion\Run'
            - '\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run'
            - '\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run'
    selection_suspicious_paths_1:
        CommandLine|contains:
            - ':\Perflogs'
            - :\ProgramData'
            - ':\Windows\Temp'
            - ':\Temp'
            - '\AppData\Local\Temp'
            - '\AppData\Roaming'
            - ':\$Recycle.bin'
            - ':\Users\Default'
            - ':\Users\public'
            - '%temp%'
            - '%tmp%'
            - '%Public%'
            - '%AppData%'
    selection_suspicious_paths_user_1:
        CommandLine|contains: ':\Users\'
    selection_suspicious_paths_user_2:
        CommandLine|contains:
            - '\Favorites'
            - '\Favourites'
            - '\Contacts'
            - '\Music'
            - '\Pictures'
            - '\Documents'
            - '\Photos'
    condition: all of selection_execution_* and (selection_suspicious_paths_1 or (all of selection_suspicious_paths_user_*))
falsepositives:
    - Legitimate administrative activity or software installations
level: high
related high
HackTool - CrackMapExec Execution
This rule detect common flag combinations used by CrackMapExec in order to detect its use even if the binary has been replaced.
status test author Florian Roth (Nextron Systems) id 42a993dd-bb3e-48c8-b372-4d6684c4106c license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - CrackMapExec Execution
id: 42a993dd-bb3e-48c8-b372-4d6684c4106c
status: test
description: This rule detect common flag combinations used by CrackMapExec in order to detect its use even if the binary has been replaced.
references:
    - https://mpgn.gitbook.io/crackmapexec/smb-protocol/authentication/checking-credentials-local
    - https://www.mandiant.com/resources/telegram-malware-iranian-espionage
    - https://www.infosecmatter.com/crackmapexec-module-library/?cmem=mssql-mimikatz
    - https://www.infosecmatter.com/crackmapexec-module-library/?cmem=smb-pe_inject
author: Florian Roth (Nextron Systems)
date: 2022-02-25
modified: 2023-03-08
tags:
    - attack.execution
    - attack.persistence
    - attack.privilege-escalation
    - attack.credential-access
    - attack.discovery
    - attack.t1047
    - attack.t1053
    - attack.t1059.003
    - attack.t1059.001
    - attack.t1110
    - attack.t1201
logsource:
    category: process_creation
    product: windows
detection:
    selection_binary:
        Image|endswith: '\crackmapexec.exe'
    selection_special:
        CommandLine|contains: ' -M pe_inject '
    selection_execute:
        CommandLine|contains|all:
            - ' --local-auth'
            - ' -u '
            - ' -x '
    selection_hash:
        CommandLine|contains|all:
            - ' --local-auth'
            - ' -u '
            - ' -p '
            - " -H 'NTHASH'"
    selection_module_mssql:
        CommandLine|contains|all:
            - ' mssql '
            - ' -u '
            - ' -p '
            - ' -M '
            - ' -d '
    selection_module_smb1:
        CommandLine|contains|all:
            - ' smb '
            - ' -u '
            - ' -H '
            - ' -M '
            - ' -o '
    selection_module_smb2:
        CommandLine|contains|all:
            - ' smb '
            - ' -u '
            - ' -p '
            - ' --local-auth'
    part_localauth_1:
        CommandLine|contains|all:
            - ' --local-auth'
            - ' -u '
            - ' -p '
    part_localauth_2:
        CommandLine|contains|all:
            - ' 10.'
            - ' 192.168.'
            - '/24 '
    condition: 1 of selection_* or all of part_localauth*
falsepositives:
    - Unknown
level: high
related high
Suspicious HH.EXE Execution
Detects a suspicious execution of a Microsoft HTML Help (HH.exe)
status test author Maxim Pavlunin id e8a95b5e-c891-46e2-b33a-93937d3abc31 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious HH.EXE Execution
id: e8a95b5e-c891-46e2-b33a-93937d3abc31
status: test
description: Detects a suspicious execution of a Microsoft HTML Help (HH.exe)
references:
    - https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/chm-badness-delivers-a-banking-trojan/
    - https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-27939090904026cc396b0b629c8e4314acd6f5dac40a676edbc87f4567b47eb7
    - https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/higaisa-or-winnti-apt-41-backdoors-old-and-new/
    - https://www.zscaler.com/blogs/security-research/unintentional-leak-glimpse-attack-vectors-apt37
author: Maxim Pavlunin
date: 2020-04-01
modified: 2023-04-12
tags:
    - attack.execution
    - attack.initial-access
    - attack.stealth
    - attack.t1047
    - attack.t1059.001
    - attack.t1059.003
    - attack.t1059.005
    - attack.t1059.007
    - attack.t1218
    - attack.t1218.001
    - attack.t1218.010
    - attack.t1218.011
    - attack.t1566
    - attack.t1566.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'HH.exe'
        - Image|endswith: '\hh.exe'
    selection_paths:
        CommandLine|contains:
            - '.application'
            - '\AppData\Local\Temp\'
            - '\Content.Outlook\'
            - '\Downloads\'
            - '\Users\Public\'
            - '\Windows\Temp\'
            # - '\AppData\Local\Temp\Temp?_'
            # - '\AppData\Local\Temp\Rar$'
            # - '\AppData\Local\Temp\7z'
            # - '\AppData\Local\Temp\wz'
            # - '\AppData\Local\Temp\peazip-tmp'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Suspicious Process Created Via Wmic.EXE
Detects WMIC executing "process call create" with suspicious calls to processes such as "rundll32", "regsrv32", etc.
status test author Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) id 3c89a1e8-0fba-449e-8f1b-8409d6267ec8 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Process Created Via Wmic.EXE
id: 3c89a1e8-0fba-449e-8f1b-8409d6267ec8
related:
    - id: 526be59f-a573-4eea-b5f7-f0973207634d # Generic
      type: derived
status: test
description: Detects WMIC executing "process call create" with suspicious calls to processes such as "rundll32", "regsrv32", etc.
references:
    - https://thedfirreport.com/2020/10/08/ryuks-return/
    - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2020-10-12
modified: 2023-02-14
tags:
    - attack.execution
    - attack.t1047
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'process '
            - 'call '
            - 'create '
        CommandLine|contains:
            # Add more susupicious paths and binaries as you see fit in your env
            - 'rundll32'
            - 'bitsadmin'
            - 'regsvr32'
            - 'cmd.exe /c '
            - 'cmd.exe /k '
            - 'cmd.exe /r '
            - 'cmd /c '
            - 'cmd /k '
            - 'cmd /r '
            - 'powershell'
            - 'pwsh'
            - 'certutil'
            - 'cscript'
            - 'wscript'
            - 'mshta'
            - '\Users\Public\'
            - '\Windows\Temp\'
            - '\AppData\Local\'
            - '%temp%'
            - '%tmp%'
            - '%ProgramData%'
            - '%appdata%'
            - '%comspec%'
            - '%localappdata%'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Suspicious Microsoft Office Child Process
Detects a suspicious process spawning from one of the Microsoft Office suite products (Word, Excel, PowerPoint, Publisher, Visio, etc.)
status test author Florian Roth (Nextron Systems), Markus Neis, FPT.EagleEye Team, Vadim Khrykov, Cyb3rEng, Michael Haag, Christopher Peacock @securepeacock, @scythe_io id 438025f9-5856-4663-83f7-52f878a70a50 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Microsoft Office Child Process
id: 438025f9-5856-4663-83f7-52f878a70a50
related:
    - id: c27515df-97a9-4162-8a60-dc0eeb51b775 # Speicifc OneNote rule due to its recent usage in phishing attacks
      type: derived
    - id: e1693bc8-7168-4eab-8718-cdcaa68a1738
      type: derived
    - id: 23daeb52-e6eb-493c-8607-c4f0246cb7d8
      type: obsolete
    - id: 518643ba-7d9c-4fa5-9f37-baed36059f6a
      type: obsolete
    - id: 04f5363a-6bca-42ff-be70-0d28bf629ead
      type: obsolete
status: test
description: Detects a suspicious process spawning from one of the Microsoft Office suite products (Word, Excel, PowerPoint, Publisher, Visio, etc.)
references:
    - https://www.hybrid-analysis.com/sample/465aabe132ccb949e75b8ab9c5bda36d80cf2fd503d52b8bad54e295f28bbc21?environmentId=100
    - https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html
    - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/
    - https://doublepulsar.com/follina-a-microsoft-office-code-execution-vulnerability-1a47fce5629e
    - https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml
    - https://github.com/splunk/security_content/blob/300af51b88ad5d5b27ce4f5f54e4d6e6a3a2c06d/detections/endpoint/office_spawning_control.yml
    - https://twitter.com/andythevariable/status/1576953781581144064?s=20&t=QiJILvK4ZiBdR8RJe24u-A
    - https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
    - https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/windows/defense_evasion_execution_msbuild_started_by_office_app.toml
    - https://www.vmray.com/analyses/2d2fa29185ad/report/overview.html
    - https://app.any.run/tasks/c903e9c8-0350-440c-8688-3881b556b8e0/
author: Florian Roth (Nextron Systems), Markus Neis, FPT.EagleEye Team, Vadim Khrykov, Cyb3rEng, Michael Haag, Christopher Peacock @securepeacock, @scythe_io
date: 2018-04-06
modified: 2023-04-24
tags:
    - attack.execution
    - attack.stealth
    - attack.t1047
    - attack.t1204.002
    - attack.t1218.010
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|endswith:
            - '\EQNEDT32.EXE'
            - '\EXCEL.EXE'
            - '\MSACCESS.EXE'
            - '\MSPUB.exe'
            - '\ONENOTE.EXE'
            - '\POWERPNT.exe'
            - '\VISIO.exe'
            - '\WINWORD.EXE'
            - '\wordpad.exe'
            - '\wordview.exe'
    selection_child_processes:
        - OriginalFileName:
              - 'bitsadmin.exe'
              - 'CertOC.exe'
              - 'CertUtil.exe'
              - 'Cmd.Exe'
              - 'CMSTP.EXE'
              - 'cscript.exe'
              - 'curl.exe'
              - 'HH.exe'
              - 'IEExec.exe'
              - 'InstallUtil.exe'
              - 'javaw.exe'
              - 'Microsoft.Workflow.Compiler.exe'
              - 'msdt.exe'
              - 'MSHTA.EXE'
              - 'msiexec.exe'
              - 'Msxsl.exe'
              - 'odbcconf.exe'
              - 'pcalua.exe'
              - 'PowerShell.EXE'
              - 'RegAsm.exe'
              - 'RegSvcs.exe'
              - 'REGSVR32.exe'
              - 'RUNDLL32.exe'
              - 'schtasks.exe'
              - 'ScriptRunner.exe'
              - 'wmic.exe'
              - 'WorkFolders.exe'
              - 'wscript.exe'
        - Image|endswith:
              - '\AppVLP.exe'
              - '\bash.exe'
              - '\bitsadmin.exe'
              - '\certoc.exe'
              - '\certutil.exe'
              - '\cmd.exe'
              - '\cmstp.exe'
              - '\control.exe'
              - '\cscript.exe'
              - '\curl.exe'
              - '\forfiles.exe'
              - '\hh.exe'
              - '\ieexec.exe'
              - '\installutil.exe'
              - '\javaw.exe'
              - '\mftrace.exe'
              - '\Microsoft.Workflow.Compiler.exe'
              - '\msbuild.exe'
              - '\msdt.exe'
              - '\mshta.exe'
              - '\msidb.exe'
              - '\msiexec.exe'
              - '\msxsl.exe'
              - '\odbcconf.exe'
              - '\pcalua.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\regasm.exe'
              - '\regsvcs.exe'
              - '\regsvr32.exe'
              - '\rundll32.exe'
              - '\schtasks.exe'
              - '\scrcons.exe'
              - '\scriptrunner.exe'
              - '\sh.exe'
              - '\svchost.exe'
              - '\verclsid.exe'
              - '\wmic.exe'
              - '\workfolders.exe'
              - '\wscript.exe'
    selection_child_susp_paths: # Idea: Laiali Kazalbach, Mohamed Elsayed (#4142)
        Image|contains:
            - '\AppData\'
            - '\Users\Public\'
            - '\ProgramData\'
            - '\Windows\Tasks\'
            - '\Windows\Temp\'
            - '\Windows\System32\Tasks\'
    condition: selection_parent and 1 of selection_child_*
falsepositives:
    - Unknown
level: high
related high
Script Event Consumer Spawning Process
Detects a suspicious child process of Script Event Consumer (scrcons.exe).
status test author Sittikorn S id f6d1dd2f-b8ce-40ca-bc23-062efb686b34 license Sigma · DRL-1.1
view Sigma YAML
title: Script Event Consumer Spawning Process
id: f6d1dd2f-b8ce-40ca-bc23-062efb686b34
status: test
description: Detects a suspicious child process of Script Event Consumer (scrcons.exe).
references:
    - https://redcanary.com/blog/child-processes/
    - https://docs.paloaltonetworks.com/cortex/cortex-xdr/cortex-xdr-analytics-alert-reference/cortex-xdr-analytics-alert-reference/scrcons-exe-rare-child-process.html
author: Sittikorn S
date: 2021-06-21
modified: 2022-07-14
tags:
    - attack.execution
    - attack.t1047
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\scrcons.exe'
        Image|endswith:
            - '\svchost.exe'
            - '\dllhost.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\wscript.exe'
            - '\cscript.exe'
            - '\schtasks.exe'
            - '\regsvr32.exe'
            - '\mshta.exe'
            - '\rundll32.exe'
            - '\msiexec.exe'
            - '\msbuild.exe'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Potential Windows Defender Tampering Via Wmic.EXE
Detects potential tampering with Windows Defender settings such as adding exclusion using wmic
status test author frack113 id 51cbac1e-eee3-4a90-b1b7-358efb81fa0a license Sigma · DRL-1.1
view Sigma YAML
title: Potential Windows Defender Tampering Via Wmic.EXE
id: 51cbac1e-eee3-4a90-b1b7-358efb81fa0a
status: test
description: Detects potential tampering with Windows Defender settings such as adding exclusion using wmic
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/5c1e6f1b4fafd01c8d1ece85f510160fc1275fbf/atomics/T1562.001/T1562.001.md
    - https://www.bleepingcomputer.com/news/security/gootkit-malware-bypasses-windows-defender-by-setting-path-exclusions/
    - https://www.bleepingcomputer.com/news/security/iobit-forums-hacked-to-spread-ransomware-to-its-members/
author: frack113
date: 2022-12-11
modified: 2023-02-14
tags:
    - attack.execution
    - attack.defense-impairment
    - attack.t1047
    - attack.t1685
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - OriginalFileName: 'wmic.exe'
        - Image|endswith: '\WMIC.exe'
    selection_cli:
        CommandLine|contains: '/Namespace:\\\\root\\Microsoft\\Windows\\Defender'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Suspicious WMIC Execution Via Office Process
Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).
status test author Vadim Khrykov, Cyb3rEng id e1693bc8-7168-4eab-8718-cdcaa68a1738 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious WMIC Execution Via Office Process
id: e1693bc8-7168-4eab-8718-cdcaa68a1738
related:
    - id: 438025f9-5856-4663-83f7-52f878a70a50
      type: derived
    - id: 518643ba-7d9c-4fa5-9f37-baed36059f6a
      type: obsolete
    - id: 9d1c72f5-43f0-4da5-9320-648cf2099dd0
      type: obsolete
    - id: c0e1c3d5-4381-4f18-8145-2583f06a1fe5
      type: obsolete
    - id: 04f5363a-6bca-42ff-be70-0d28bf629ead
      type: obsolete
status: test
description: Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).
references:
    - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/
    - https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml
author: Vadim Khrykov, Cyb3rEng
date: 2021-08-23
modified: 2023-02-14
tags:
    - attack.stealth
    - attack.t1204.002
    - attack.t1047
    - attack.t1218.010
    - attack.execution
logsource:
    product: windows
    category: process_creation
detection:
    selection_parent:
        ParentImage|endswith:
            - '\WINWORD.EXE'
            - '\EXCEL.EXE'
            - '\POWERPNT.exe'
            - '\MSPUB.exe'
            - '\VISIO.exe'
            - '\MSACCESS.EXE'
            - '\EQNEDT32.EXE'
            - '\ONENOTE.EXE'
            - '\wordpad.exe'
            - '\wordview.exe'
    selection_wmic_img:
        - Image|endswith: '\wbem\WMIC.exe'
        - OriginalFileName: 'wmic.exe'
    selection_wmic_cli:
        CommandLine|contains|all:
            - 'process'
            - 'create'
            - 'call'
        CommandLine|contains:
            # Add more suspicious LOLBINs as you see fit
            - 'regsvr32'
            - 'rundll32'
            - 'msiexec'
            - 'mshta'
            - 'verclsid'
            - 'wscript'
            - 'cscript'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
HTML Help HH.EXE Suspicious Child Process
Detects a suspicious child process of a Microsoft HTML Help (HH.exe)
status test author Maxim Pavlunin, Nasreddine Bencherchali (Nextron Systems) id 52cad028-0ff0-4854-8f67-d25dfcbc78b4 license Sigma · DRL-1.1
view Sigma YAML
title: HTML Help HH.EXE Suspicious Child Process
id: 52cad028-0ff0-4854-8f67-d25dfcbc78b4
status: test
description: Detects a suspicious child process of a Microsoft HTML Help (HH.exe)
references:
    - https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/chm-badness-delivers-a-banking-trojan/
    - https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-27939090904026cc396b0b629c8e4314acd6f5dac40a676edbc87f4567b47eb7
    - https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/higaisa-or-winnti-apt-41-backdoors-old-and-new/
    - https://www.zscaler.com/blogs/security-research/unintentional-leak-glimpse-attack-vectors-apt37
author: Maxim Pavlunin, Nasreddine Bencherchali (Nextron Systems)
date: 2020-04-01
modified: 2023-04-12
tags:
    - attack.execution
    - attack.initial-access
    - attack.stealth
    - attack.t1047
    - attack.t1059.001
    - attack.t1059.003
    - attack.t1059.005
    - attack.t1059.007
    - attack.t1218
    - attack.t1218.001
    - attack.t1218.010
    - attack.t1218.011
    - attack.t1566
    - attack.t1566.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\hh.exe'
        Image|endswith:
            - '\CertReq.exe'
            - '\CertUtil.exe'
            - '\cmd.exe'
            - '\cscript.exe'
            - '\installutil.exe'
            - '\MSbuild.exe'
            - '\MSHTA.EXE'
            - '\msiexec.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\regsvr32.exe'
            - '\rundll32.exe'
            - '\schtasks.exe'
            - '\wmic.exe'
            - '\wscript.exe'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
HackTool - CrackMapExec Execution Patterns
Detects various execution patterns of the CrackMapExec pentesting framework
status stable author Thomas Patzke id 058f4380-962d-40a5-afce-50207d36d7e2 license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - CrackMapExec Execution Patterns
id: 058f4380-962d-40a5-afce-50207d36d7e2
status: stable
description: Detects various execution patterns of the CrackMapExec pentesting framework
references:
    - https://github.com/byt3bl33d3r/CrackMapExec
author: Thomas Patzke
date: 2020-05-22
modified: 2023-11-06
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.t1047
    - attack.t1053
    - attack.t1059.003
    - attack.t1059.001
    - attack.s0106
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            # cme/protocols/smb/wmiexec.py (generalized execute_remote and execute_fileless)
            - 'cmd.exe /Q /c * 1> \\\\*\\*\\* 2>&1'
            # cme/protocols/smb/atexec.py:109 (fileless output via share)
            - 'cmd.exe /C * > \\\\*\\*\\* 2>&1'
            # cme/protocols/smb/atexec.py:111 (fileless output via share)
            - 'cmd.exe /C * > *\\Temp\\* 2>&1'
            # https://github.com/byt3bl33d3r/CrackMapExec/blob/d8c50c8cbaf36c29329078662473f75e440978d2/cme/helpers/powershell.py#L136 (PowerShell execution with obfuscation)
            - 'powershell.exe -exec bypass -noni -nop -w 1 -C "'
            # https://github.com/byt3bl33d3r/CrackMapExec/blob/d8c50c8cbaf36c29329078662473f75e440978d2/cme/helpers/powershell.py#L160 (PowerShell execution without obfuscation)
            - 'powershell.exe -noni -nop -w 1 -enc '
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Potential Remote SquiblyTwo Technique Execution
Detects potential execution of the SquiblyTwo technique that leverages Windows Management Instrumentation (WMI) to execute malicious code remotely. This technique bypasses application whitelisting by using wmic.exe to process malicious XSL (eXtensible Stylesheet Language) scripts that can contain embedded JScript or VBScript. The attack typically works by fetching XSL content from a remote source (using HTTP/HTTPS) and executing it with full trust privileges directly in memory, avoiding disk-based detection mechanisms. This is a common LOLBin (Living Off The Land Binary) technique used for defense evasion and code execution.
status test author Markus Neis, Florian Roth, Swachchhanda Shrawan Poudel (Nextron Systems) id 8d63dadf-b91b-4187-87b6-34a1114577ea license Sigma · DRL-1.1
view Sigma YAML
title: Potential Remote SquiblyTwo Technique Execution
id: 8d63dadf-b91b-4187-87b6-34a1114577ea
related:
    - id: 06ce37c2-61ab-4f05-9ff5-b1a96d18ae32
      type: similar
    - id: 05c36dd6-79d6-4a9a-97da-3db20298ab2d
      type: similar
status: test
description: |
    Detects potential execution of the SquiblyTwo technique that leverages Windows Management Instrumentation (WMI)
    to execute malicious code remotely. This technique bypasses application whitelisting by using wmic.exe to process
    malicious XSL (eXtensible Stylesheet Language) scripts that can contain embedded JScript or VBScript.
    The attack typically works by fetching XSL content from a remote source (using HTTP/HTTPS) and executing it
    with full trust privileges directly in memory, avoiding disk-based detection mechanisms. This is a common
    LOLBin (Living Off The Land Binary) technique used for defense evasion and code execution.
references:
    - https://web.archive.org/web/20190209154607/https://subt0x11.blogspot.com/2018/04/wmicexe-whitelisting-bypass-hacking.html
    - https://twitter.com/mattifestation/status/986280382042595328 # Deleted
    - https://atomicredteam.io/defense-evasion/T1220/
    - https://lolbas-project.github.io/lolbas/Binaries/Wmic/
    - https://x.com/byrne_emmy12099/status/1932346420226658668
author: Markus Neis, Florian Roth, Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2019-01-16
modified: 2026-01-24
tags:
    - attack.stealth
    - attack.t1047
    - attack.t1220
    - attack.execution
    - attack.t1059.005
    - attack.t1059.007
logsource:
    category: process_creation
    product: windows
detection:
    selection_pe:
        - Image|endswith: '\wmic.exe'
        - OriginalFileName: 'wmic.exe'
        - Hashes|contains:  # Sysmon field hashes contains all types
              - 'IMPHASH=1B1A3F43BF37B5BFE60751F2EE2F326E'
              - 'IMPHASH=37777A96245A3C74EB217308F3546F4C'
              - 'IMPHASH=9D87C9D67CE724033C0B40CC4CA1B206'
              - 'IMPHASH=B12619881D79C3ACADF45E752A58554A'
              - 'IMPHASH=16A48C3CABF98A9DC1BF02C07FE1EA00'
    selection_cli:
        CommandLine|contains|windash: '/format:'
        CommandLine|contains:
            - '://'
            - '\\\\'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
PSExec and WMI Process Creations Block
Detects blocking of process creations originating from PSExec and WMI commands
status test author Bhabesh Raj id 97b9ce1e-c5ab-11ea-87d0-0242ac130003 license Sigma · DRL-1.1
view Sigma YAML
title: PSExec and WMI Process Creations Block
id: 97b9ce1e-c5ab-11ea-87d0-0242ac130003
status: test
description: Detects blocking of process creations originating from PSExec and WMI commands
references:
    - https://learn.microsoft.com/en-us/defender-endpoint/attack-surface-reduction-rules-reference?view=o365-worldwide#block-process-creations-originating-from-psexec-and-wmi-commands
    - https://twitter.com/duff22b/status/1280166329660497920
author: Bhabesh Raj
date: 2020-07-14
modified: 2022-12-25
tags:
    - attack.execution
    - attack.lateral-movement
    - attack.t1047
    - attack.t1569.002
logsource:
    product: windows
    service: windefend
    definition: 'Requirements:Enabled Block process creations originating from PSExec and WMI commands from Attack Surface Reduction (GUID: d1e49aac-8f56-4280-b9ba-993a6d77406c)'
detection:
    selection:
        EventID: 1121
        ProcessName|endswith:
            - '\wmiprvse.exe'
            - '\psexesvc.exe'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Powershell DNSExfiltration
DNSExfiltrator allows for transferring (exfiltrate) a file over a DNS request covert channel
status test author frack113 id d59d7842-9a21-4bc6-ba98-64bfe0091355 license Sigma · DRL-1.1
view Sigma YAML
title: Powershell DNSExfiltration
id: d59d7842-9a21-4bc6-ba98-64bfe0091355
status: test
description: DNSExfiltrator allows for transferring (exfiltrate) a file over a DNS request covert channel
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048/T1048.md#atomic-test-3---dnsexfiltration-doh
    - https://github.com/Arno0x/DNSExfiltrator
author: frack113
date: 2022-01-07
tags:
    - attack.exfiltration
    - attack.t1048
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_cmdlet:
        - ScriptBlockText|contains: 'Invoke-DNSExfiltrator'
        - ScriptBlockText|contains|all:
              - ' -i '
              - ' -d '
              - ' -p '
              - ' -doh '
              - ' -t '
    condition: selection_cmdlet
falsepositives:
    - Legitimate script
level: high
related high
Suspicious Redirection to Local Admin Share
Detects a suspicious output redirection to the local admins share, this technique is often found in malicious scripts or hacktool stagers
status test author Florian Roth (Nextron Systems) id ab9e3b40-0c85-4ba1-aede-455d226fd124 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Redirection to Local Admin Share
id: ab9e3b40-0c85-4ba1-aede-455d226fd124
status: test
description: Detects a suspicious output redirection to the local admins share, this technique is often found in malicious scripts or hacktool stagers
references:
    - https://www.microsoft.com/security/blog/2022/01/15/destructive-malware-targeting-ukrainian-organizations/
    - http://blog.talosintelligence.com/2022/09/lazarus-three-rats.html
author: Florian Roth (Nextron Systems)
date: 2022-01-16
modified: 2023-12-28
tags:
    - attack.exfiltration
    - attack.t1048
logsource:
    category: process_creation
    product: windows
detection:
    selection_redirect:
        CommandLine|contains: '>'
    selection_share:
        CommandLine|contains:
            - '\\\\127.0.0.1\\admin$\\'
            - '\\\\localhost\\admin$\\'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
PUA - Restic Backup Tool Execution
Detects the execution of the Restic backup tool, which can be used for data exfiltration. Threat actors may leverage Restic to back up and exfiltrate sensitive data to remote storage locations, including cloud services. If not legitimately used in the enterprise environment, its presence may indicate malicious activity.
status experimental author Nounou Mbeiri, Swachchhanda Shrawan Poudel (Nextron Systems) id 6ddff2e8-ea1a-45d0-8938-93dfc1d67ae7 license Sigma · DRL-1.1
view Sigma YAML
title: PUA - Restic Backup Tool Execution
id: 6ddff2e8-ea1a-45d0-8938-93dfc1d67ae7
status: experimental
description: |
    Detects the execution of the Restic backup tool, which can be used for data exfiltration.
    Threat actors may leverage Restic to back up and exfiltrate sensitive data to remote storage locations, including cloud services.
    If not legitimately used in the enterprise environment, its presence may indicate malicious activity.
references:
    - https://thedfirreport.com/2024/09/30/nitrogen-campaign-drops-sliver-and-ends-with-blackcat-ransomware/#exfiltration
    - https://restic.net/
    - https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html
author: Nounou Mbeiri, Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-10-17
tags:
    - attack.exfiltration
    - attack.t1048
    - attack.t1567.002
logsource:
    product: windows
    category: process_creation
detection:
    selection_specific:
        - CommandLine|contains|all:
              - '--password-file'
              - 'init'
              - ' -r '
        - CommandLine|contains|all:
              - '--use-fs-snapshot'
              - 'backup'
              - ' -r '
    selection_restic:
        CommandLine|contains:
            - 'sftp:'
            - 'rest:http'
            - 's3:s3.'
            - 's3.http'
            - 'azure:'
            - ' gs:'
            - 'rclone:'
            - 'swift:'
            - ' b2:'
        CommandLine|contains|all:
            - ' init '
            - ' -r '
    condition: 1 of selection_*
falsepositives:
    - Legitimate use of Restic for backup purposes within the organization.
level: high
related high
Suspicious WebDav Client Execution Via Rundll32.EXE
Detects "svchost.exe" spawning "rundll32.exe" with command arguments like C:\windows\system32\davclnt.dll,DavSetCookie. This could be an indicator of exfiltration or use of WebDav to launch code (hosted on WebDav Server) or potentially a sign of exploitation of CVE-2023-23397
status test author Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems) id 982e9f2d-1a85-4d5b-aea4-31f5e97c6555 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious WebDav Client Execution Via Rundll32.EXE
id: 982e9f2d-1a85-4d5b-aea4-31f5e97c6555
status: test
description: |
    Detects "svchost.exe" spawning "rundll32.exe" with command arguments like C:\windows\system32\davclnt.dll,DavSetCookie. This could be an indicator of exfiltration or use of WebDav to launch code (hosted on WebDav Server) or potentially a sign of exploitation of CVE-2023-23397
references:
    - https://twitter.com/aceresponder/status/1636116096506818562
    - https://www.mdsec.co.uk/2023/03/exploiting-cve-2023-23397-microsoft-outlook-elevation-of-privilege-vulnerability/
    - https://www.pwndefend.com/2023/03/15/the-long-game-persistent-hash-theft/
    - https://www.microsoft.com/en-us/security/blog/wp-content/uploads/2023/03/Figure-7-sample-webdav-process-create-event.png
    - https://www.microsoft.com/en-us/security/blog/2023/03/24/guidance-for-investigating-attacks-using-cve-2023-23397/
author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems)
date: 2023-03-16
modified: 2023-09-18
tags:
    - attack.exfiltration
    - attack.t1048.003
    - cve.2023-23397
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\svchost.exe'
        ParentCommandLine|contains: '-s WebClient'
        Image|endswith: '\rundll32.exe'
        CommandLine|contains: 'C:\windows\system32\davclnt.dll,DavSetCookie'
        CommandLine|re: '://\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}'
    filter_local_ips:
        CommandLine|contains:
            - '://10.' # 10.0.0.0/8
            - '://192.168.' # 192.168.0.0/16
            - '://172.16.' # 172.16.0.0/12
            - '://172.17.'
            - '://172.18.'
            - '://172.19.'
            - '://172.20.'
            - '://172.21.'
            - '://172.22.'
            - '://172.23.'
            - '://172.24.'
            - '://172.25.'
            - '://172.26.'
            - '://172.27.'
            - '://172.28.'
            - '://172.29.'
            - '://172.30.'
            - '://172.31.'
            - '://127.' # 127.0.0.0/8
            - '://169.254.' # 169.254.0.0/16
    condition: selection and not 1 of filter_*
falsepositives:
    - Unknown
level: high
related high
HackTool - PCHunter Execution
Detects suspicious use of PCHunter, a tool like Process Hacker to view and manipulate processes, kernel options and other low level stuff
status test author Florian Roth (Nextron Systems), Nasreddine Bencherchali id fca949cc-79ca-446e-8064-01aa7e52ece5 license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - PCHunter Execution
id: fca949cc-79ca-446e-8064-01aa7e52ece5
status: test
description: Detects suspicious use of PCHunter, a tool like Process Hacker to view and manipulate processes, kernel options and other low level stuff
references:
    - https://web.archive.org/web/20231210115125/http://www.xuetr.com/
    - https://www.crowdstrike.com/blog/falcon-overwatch-report-finds-increase-in-ecrime/
    - https://www.hexacorn.com/blog/2018/04/20/kernel-hacking-tool-you-might-have-never-heard-of-xuetr-pchunter/
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali
date: 2022-10-10
modified: 2024-11-23
tags:
    - attack.execution
    - attack.discovery
    - attack.t1082
    - attack.t1057
    - attack.t1012
    - attack.t1083
    - attack.t1007
logsource:
    category: process_creation
    product: windows
detection:
    selection_image:
        Image|endswith:
            - '\PCHunter64.exe'
            - '\PCHunter32.exe'
    selection_pe:
        - OriginalFileName: 'PCHunter.exe'
        - Description: 'Epoolsoft Windows Information View Tools'
    selection_hashes:
        Hashes|contains:
            - 'SHA1=5F1CBC3D99558307BC1250D084FA968521482025'
            - 'MD5=987B65CD9B9F4E9A1AFD8F8B48CF64A7'
            - 'SHA256=2B214BDDAAB130C274DE6204AF6DBA5AEEC7433DA99AA950022FA306421A6D32'
            - 'IMPHASH=444D210CEA1FF8112F256A4997EED7FF'
            - 'SHA1=3FB89787CB97D902780DA080545584D97FB1C2EB'
            - 'MD5=228DD0C2E6287547E26FFBD973A40F14'
            - 'SHA256=55F041BF4E78E9BFA6D4EE68BE40E496CE3A1353E1CA4306598589E19802522C'
            - 'IMPHASH=0479F44DF47CFA2EF1CCC4416A538663'
    condition: 1 of selection_*
falsepositives:
    - Unlikely
level: high
related high
Shell Execution via Rsync - Linux
Detects the use of the "rsync" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
status experimental author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.), Florian Roth id e2326866-609f-4015-aea9-7ec634e8aa04 license Sigma · DRL-1.1
view Sigma YAML
title: Shell Execution via Rsync - Linux
id: e2326866-609f-4015-aea9-7ec634e8aa04
status: experimental
description: |
    Detects the use of the "rsync" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
references:
    - https://gtfobins.github.io/gtfobins/rsync/#shell
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.), Florian Roth
date: 2024-09-02
modified: 2025-01-18
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection_img:
        Image|endswith:
            - '/rsync'
            - '/rsyncd'
        CommandLine|contains: ' -e '
    selection_cli:
        CommandLine|contains:
            - '/ash '
            - '/bash '
            - '/dash '
            - '/csh '
            - '/sh '
            - '/zsh '
            - '/tcsh '
            - '/ksh '
            - "'ash "
            - "'bash "
            - "'dash "
            - "'csh "
            - "'sh "
            - "'zsh "
            - "'tcsh "
            - "'ksh "
    condition: all of selection_*
falsepositives:
    - Legitimate cases in which "rsync" is used to execute a shell
level: high
related high
Shell Execution via Git - Linux
Detects the use of the "git" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
status test author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.) id 47b3bbd4-1bf7-48cc-84ab-995362aaa75a license Sigma · DRL-1.1
view Sigma YAML
title: Shell Execution via Git - Linux
id: 47b3bbd4-1bf7-48cc-84ab-995362aaa75a
status: test
description: |
    Detects the use of the "git" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
references:
    - https://gtfobins.github.io/gtfobins/git/#shell
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-09-02
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        ParentImage|endswith: '/git'
        ParentCommandLine|contains|all:
            - ' -p '
            - 'help'
        CommandLine|contains:
            - 'bash 0<&1'
            - 'dash 0<&1'
            - 'sh 0<&1'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Suspicious Invocation of Shell via Rsync
Detects the execution of a shell as sub process of "rsync" without the expected command line flag "-e" being used, which could be an indication of exploitation as described in CVE-2024-12084. This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
status experimental author Florian Roth id 297241f3-8108-4b3a-8c15-2dda9f844594 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Invocation of Shell via Rsync
id: 297241f3-8108-4b3a-8c15-2dda9f844594
status: experimental
description: |
    Detects the execution of a shell as sub process of "rsync" without the expected command line flag "-e" being used, which could be an indication of exploitation as described in CVE-2024-12084. This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
references:
    - https://sysdig.com/blog/detecting-and-mitigating-cve-2024-12084-rsync-remote-code-execution/
    - https://gist.github.com/Neo23x0/a20436375a1e26524931dd8ea1a3af10
author: Florian Roth
date: 2025-01-18
tags:
    - attack.execution
    - attack.t1059
    - attack.t1203
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        ParentImage|endswith:
            - '/rsync'
            - '/rsyncd'
        Image|endswith:
            - '/ash'
            - '/bash'
            - '/csh'
            - '/dash'
            - '/ksh'
            - '/sh'
            - '/tcsh'
            - '/zsh'
    filter_main_expected:
        CommandLine|contains: ' -e '
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: high
related high
Capsh Shell Invocation - Linux
Detects the use of the "capsh" utility to invoke a shell.
status test author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.) id db1ac3be-f606-4e3a-89e0-9607cbe6b98a license Sigma · DRL-1.1
view Sigma YAML
title: Capsh Shell Invocation - Linux
id: db1ac3be-f606-4e3a-89e0-9607cbe6b98a
status: test
description: |
    Detects the use of the "capsh" utility to invoke a shell.
references:
    - https://gtfobins.github.io/gtfobins/capsh/#shell
    - https://www.elastic.co/guide/en/security/current/linux-restricted-shell-breakout-via-linux-binary-s.html
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-09-02
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        Image|endswith: '/capsh'
        CommandLine|endswith: ' --'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Inline Python Execution - Spawn Shell Via OS System Library
Detects execution of inline Python code via the "-c" in order to call the "system" function from the "os" library, and spawn a shell.
status test author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.) id 2d2f44ff-4611-4778-a8fc-323a0e9850cc license Sigma · DRL-1.1
view Sigma YAML
title: Inline Python Execution - Spawn Shell Via OS System Library
id: 2d2f44ff-4611-4778-a8fc-323a0e9850cc
status: test
description: |
    Detects execution of inline Python code via the "-c" in order to call the "system" function from the "os" library, and spawn a shell.
references:
    - https://gtfobins.github.io/gtfobins/python/#shell
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-09-02
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection_img:
        - Image|endswith:
              - '/python'
              - '/python2'
              - '/python3'
        - Image|contains:
              - '/python2.'  # python image is always of the form ../python3.10; ../python is just a symlink
              - '/python3.'
    selection_cli:
        CommandLine|contains|all:
            - ' -c '
            - 'os.system('
        CommandLine|contains:
            - '/bin/bash'
            - '/bin/dash'
            - '/bin/fish'
            - '/bin/sh'
            - '/bin/zsh'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Potential Netcat Reverse Shell Execution
Detects execution of netcat with the "-e" flag followed by common shells. This could be a sign of a potential reverse shell setup.
status test author @d4ns4n_, Nasreddine Bencherchali (Nextron Systems) id 7f734ed0-4f47-46c0-837f-6ee62505abd9 license Sigma · DRL-1.1
view Sigma YAML
title: Potential Netcat Reverse Shell Execution
id: 7f734ed0-4f47-46c0-837f-6ee62505abd9
status: test
description: Detects execution of netcat with the "-e" flag followed by common shells. This could be a sign of a potential reverse shell setup.
references:
    - https://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet
    - https://www.revshells.com/
    - https://www.hackingtutorials.org/networking/hacking-netcat-part-2-bind-reverse-shells/
    - https://www.infosecademy.com/netcat-reverse-shells/
    - https://man7.org/linux/man-pages/man1/ncat.1.html
author: '@d4ns4n_, Nasreddine Bencherchali (Nextron Systems)'
date: 2023-04-07
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection_nc:
        Image|endswith:
            - '/nc'
            - '/ncat'
    selection_flags:
        CommandLine|contains:
            - ' -c '
            - ' -e '
    selection_shell:
        CommandLine|contains:
            - ' ash'
            - ' bash'
            - ' bsh'
            - ' csh'
            - ' ksh'
            - ' pdksh'
            - ' sh'
            - ' tcsh'
            - '/bin/ash'
            - '/bin/bash'
            - '/bin/bsh'
            - '/bin/csh'
            - '/bin/ksh'
            - '/bin/pdksh'
            - '/bin/sh'
            - '/bin/tcsh'
            - '/bin/zsh'
            - '$IFSash'
            - '$IFSbash'
            - '$IFSbsh'
            - '$IFScsh'
            - '$IFSksh'
            - '$IFSpdksh'
            - '$IFSsh'
            - '$IFStcsh'
            - '$IFSzsh'
    condition: all of selection_*
falsepositives:
    - Unlikely
level: high
related high
Suspicious Invocation of Shell via AWK - Linux
Detects the execution of "awk" or it's sibling commands, to invoke a shell using the system() function. This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
status test author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.) id 8c1a5675-cb85-452f-a298-b01b22a51856 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Invocation of Shell via AWK - Linux
id: 8c1a5675-cb85-452f-a298-b01b22a51856
status: test
description: |
    Detects the execution of "awk" or it's sibling commands, to invoke a shell using the system() function.
    This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
references:
    - https://gtfobins.github.io/gtfobins/awk/#shell
    - https://gtfobins.github.io/gtfobins/gawk/#shell
    - https://gtfobins.github.io/gtfobins/nawk/#shell
    - https://gtfobins.github.io/gtfobins/mawk/#shell
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-09-02
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection_img:
        Image|endswith:
            - '/awk'
            - '/gawk'
            - '/mawk'
            - '/nawk'
        CommandLine|contains: 'BEGIN {system'
    selection_cli:
        CommandLine|contains:
            - '/bin/bash'
            - '/bin/dash'
            - '/bin/fish'
            - '/bin/sh'
            - '/bin/zsh'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Suspicious Java Children Processes
Detects java process spawning suspicious children
status test author Nasreddine Bencherchali (Nextron Systems) id d292e0af-9a18-420c-9525-ec0ac3936892 license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Java Children Processes
id: d292e0af-9a18-420c-9525-ec0ac3936892
status: test
description: Detects java process spawning suspicious children
references:
    - https://www.tecmint.com/different-types-of-linux-shells/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-03
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        ParentImage|endswith: '/java'
        CommandLine|contains:
            - '/bin/sh'
            - 'bash'
            - 'dash'
            - 'ksh'
            - 'zsh'
            - 'csh'
            - 'fish'
            - 'curl'
            - 'wget'
            - 'python'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Shell Invocation Via Ssh - Linux
Detects the use of the "ssh" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
status test author Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.) id 8737b7f6-8df3-4bb7-b1da-06019b99b687 license Sigma · DRL-1.1
view Sigma YAML
title: Shell Invocation Via Ssh - Linux
id: 8737b7f6-8df3-4bb7-b1da-06019b99b687
status: test
description: |
    Detects the use of the "ssh" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
references:
    - https://gtfobins.github.io/gtfobins/ssh/
    - https://www.elastic.co/guide/en/security/current/linux-restricted-shell-breakout-via-linux-binary-s.html
author: Li Ling, Andy Parkidomo, Robert Rakowski, Blake Hartstein (Bloomberg L.P.)
date: 2024-08-29
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: linux
detection:
    selection_img:
        Image|endswith: '/ssh'
        CommandLine|contains:
            - 'ProxyCommand=;'
            - 'permitlocalcommand=yes'
            - 'localhost'
    selection_cli:
        CommandLine|contains:
            - '/bin/bash'
            - '/bin/dash'
            - '/bin/fish'
            - '/bin/sh'
            - '/bin/zsh'
            - 'sh 0<&2 1>&2'
            - 'sh 1>&2 0<&2'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
BPFDoor Abnormal Process ID or Lock File Accessed
detects BPFDoor .lock and .pid files access in temporary file storage facility
status test author Rafal Piasecki id 808146b2-9332-4d78-9416-d7e47012d83d license Sigma · DRL-1.1
view Sigma YAML
title: BPFDoor Abnormal Process ID or Lock File Accessed
id: 808146b2-9332-4d78-9416-d7e47012d83d
status: test
description: detects BPFDoor .lock and .pid files access in temporary file storage facility
references:
    - https://www.sandflysecurity.com/blog/bpfdoor-an-evasive-linux-backdoor-technical-analysis/
    - https://www.elastic.co/security-labs/a-peek-behind-the-bpfdoor
    - https://www.rapid7.com/blog/post/tr-bpfdoor-telecom-networks-sleeper-cells-threat-research-report/
    - https://github.com/rapid7/Rapid7-Labs/blob/741c7196ec12a0a56b63463d1fd726ff14d3a97a/BPFDoor/rapid7_detect_bpfdoor.sh
author: Rafal Piasecki
date: 2022-08-10
modified: 2026-03-30
tags:
    - attack.execution
    - attack.t1106
    - attack.t1059
logsource:
    product: linux
    service: auditd
detection:
    selection:
        type: 'PATH'
        name:
            - /var/run/aepmonend.pid
            - /var/run/auditd.lock
            - /var/run/cma.lock
            - /var/run/console-kit.pid
            - /var/run/consolekit.pid
            - /var/run/daemon.pid
            - /var/run/hald-addon.pid
            - /var/run/hald-smartd.pid
            - /var/run/haldrund.pid
            - /var/run/hp-health.pid
            - /var/run/hpasmlit.lock
            - /var/run/hpasmlited.pid
            - /var/run/kdevrund.pid
            - /var/run/lldpad.lock
            - /var/run/mcelog.pid
            - /var/run/system.pid
            - /var/run/uvp-srv.pid
            - /var/run/vmtoolagt.pid
            - /var/run/xinetd.lock
    condition: selection
falsepositives:
    - Unlikely
level: high
related high
PCRE.NET Package Temp Files
Detects processes creating temp files related to PCRE.NET package
status test author Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research) id 6e90ae7a-7cd3-473f-a035-4ebb72d961da license Sigma · DRL-1.1
view Sigma YAML
title: PCRE.NET Package Temp Files
id: 6e90ae7a-7cd3-473f-a035-4ebb72d961da
status: test
description: Detects processes creating temp files related to PCRE.NET package
references:
    - https://twitter.com/rbmaslen/status/1321859647091970051
    - https://twitter.com/tifkin_/status/1321916444557365248
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-29
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|contains: \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Windows Shell/Scripting Application File Write to Suspicious Folder
Detects Windows shells and scripting applications that write files to suspicious folders
status test author Florian Roth (Nextron Systems) id 1277f594-a7d1-4f28-a2d3-73af5cbeab43 license Sigma · DRL-1.1
view Sigma YAML
title: Windows Shell/Scripting Application File Write to Suspicious Folder
id: 1277f594-a7d1-4f28-a2d3-73af5cbeab43
status: test
description: Detects Windows shells and scripting applications that write files to suspicious folders
references:
    - Internal Research
author: Florian Roth (Nextron Systems)
date: 2021-11-20
modified: 2023-03-29
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: file_event
    product: windows
detection:
    selection_1:
        Image|endswith:
            - '\bash.exe'
            - '\cmd.exe'
            - '\cscript.exe'
            - '\msbuild.exe'  # https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/windows/defense_evasion_execution_msbuild_started_by_office_app.toml
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\sh.exe'
            - '\wscript.exe'
        TargetFilename|startswith:
            - 'C:\PerfLogs\'
            - 'C:\Users\Public\'
    selection_2:
        Image|endswith:
            - '\certutil.exe'
            - '\forfiles.exe'
            - '\mshta.exe'
            # - '\rundll32.exe' # Potential FP
            - '\schtasks.exe'
            - '\scriptrunner.exe'
            - '\wmic.exe'  # https://app.any.run/tasks/c903e9c8-0350-440c-8688-3881b556b8e0/
        TargetFilename|contains:
            - 'C:\PerfLogs\'
            - 'C:\Users\Public\'
            - 'C:\Windows\Temp\'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: high
related high
HackTool - Stracciatella Execution
Detects Stracciatella which executes a Powershell runspace from within C# (aka SharpPick technique) with AMSI, ETW and Script Block Logging disabled based on PE metadata characteristics.
status test author pH-T (Nextron Systems) id 7a4d9232-92fc-404d-8ce1-4c92e7caf539 license Sigma · DRL-1.1
view Sigma YAML
title: HackTool - Stracciatella Execution
id: 7a4d9232-92fc-404d-8ce1-4c92e7caf539
status: test
description: Detects Stracciatella which executes a Powershell runspace from within C# (aka SharpPick technique) with AMSI, ETW and Script Block Logging disabled based on PE metadata characteristics.
references:
    - https://github.com/mgeeky/Stracciatella
author: pH-T (Nextron Systems)
date: 2023-04-17
modified: 2024-11-23
tags:
    - attack.execution
    - attack.defense-impairment
    - attack.t1059
    - attack.t1685
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\Stracciatella.exe'
        - OriginalFileName: 'Stracciatella.exe'
        - Description: 'Stracciatella'
        - Hashes|contains:
              - 'SHA256=9d25e61ec1527e2a69d7c2a4e3fe2fe15890710c198a66a9f25d99fdf6c7b956'
              - 'SHA256=fd16609bd9830c63b9413671678bb159b89c357d21942ddbb6b93add808d121a'
    condition: selection
falsepositives:
    - Unlikely
level: high

related high
Suspicious Persistence Via VMwareToolBoxCmd.EXE VM State Change Script
Detects execution of the "VMwareToolBoxCmd.exe" with the "script" and "set" flag to setup a specific script that's located in a potentially suspicious location to run for a specific VM state
status test author Nasreddine Bencherchali (Nextron Systems) id 236d8e89-ed95-4789-a982-36f4643738ba license Sigma · DRL-1.1
view Sigma YAML
title: Suspicious Persistence Via VMwareToolBoxCmd.EXE VM State Change Script
id: 236d8e89-ed95-4789-a982-36f4643738ba
related:
    - id: 7aa4e81a-a65c-4e10-9f81-b200eb229d7d
      type: derived
status: test
description: Detects execution of the "VMwareToolBoxCmd.exe" with the "script" and "set" flag to setup a specific script that's located in a potentially suspicious location to run for a specific VM state
references:
    - https://bohops.com/2021/10/08/analyzing-and-detecting-a-vmtools-persistence-technique/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-06-14
tags:
    - attack.execution
    - attack.persistence
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection_bin_img:
        - Image|endswith: '\VMwareToolBoxCmd.exe'
        - OriginalFileName: 'toolbox-cmd.exe'
    selection_bin_cli:
        CommandLine|contains|all:
            - ' script '
            - ' set '
    selection_susp_paths:
        CommandLine|contains:
            - ':\PerfLogs\'
            - ':\Temp\'
            - ':\Windows\System32\Tasks\'
            - ':\Windows\Tasks\'
            - ':\Windows\Temp\'
            - '\AppData\Local\Temp'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Potentially Suspicious Execution From Parent Process In Public Folder
Detects a potentially suspicious execution of a parent process located in the "\Users\Public" folder executing a child process containing references to shell or scripting binaries and commandlines.
status test author Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) id 69bd9b97-2be2-41b6-9816-fb08757a4d1a license Sigma · DRL-1.1
view Sigma YAML
title: Potentially Suspicious Execution From Parent Process In Public Folder
id: 69bd9b97-2be2-41b6-9816-fb08757a4d1a
status: test
description: |
    Detects a potentially suspicious execution of a parent process located in the "\Users\Public" folder executing a child process containing references to shell or scripting binaries and commandlines.
references:
    - https://redcanary.com/blog/blackbyte-ransomware/
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2022-02-25
modified: 2024-07-12
tags:
    - attack.execution
    - attack.stealth
    - attack.t1564
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|contains: ':\Users\Public\'
    selection_child:
        - Image|endswith:
              - '\bitsadmin.exe'
              - '\certutil.exe'
              - '\cmd.exe'
              - '\cscript.exe'
              - '\mshta.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\regsvr32.exe'
              - '\rundll32.exe'
              - '\wscript.exe'
        - CommandLine|contains:
              - 'bitsadmin'
              - 'certutil'
              - 'cscript'
              - 'mshta'
              - 'powershell'
              - 'regsvr32'
              - 'rundll32'
              - 'wscript'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
related high
Run PowerShell Script from Redirected Input Stream
Detects PowerShell script execution via input stream redirect
status test author Moriarty Meng (idea), Anton Kutepov (rule), oscd.community id c83bf4b5-cdf0-437c-90fa-43d734f7c476 license Sigma · DRL-1.1
view Sigma YAML
title: Run PowerShell Script from Redirected Input Stream
id: c83bf4b5-cdf0-437c-90fa-43d734f7c476
status: test
description: Detects PowerShell script execution via input stream redirect
references:
    - https://github.com/LOLBAS-Project/LOLBAS/blob/4db780e0f0b2e2bb8cb1fa13e09196da9b9f1834/yml/LOLUtilz/OSBinaries/Powershell.yml
    - https://twitter.com/Moriarty_Meng/status/984380793383370752
author: Moriarty Meng (idea), Anton Kutepov (rule), oscd.community
date: 2020-10-17
modified: 2021-11-27
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\powershell.exe'
            - '\pwsh.exe'
        CommandLine|re: '\s-\s*<'
    condition: selection
falsepositives:
    - Unknown
level: high
related high
Add Insecure Download Source To Winget
Detects usage of winget to add a new insecure (http) download source. Winget will not allow the addition of insecure sources, hence this could indicate potential suspicious activity (or typos)
status test author Nasreddine Bencherchali (Nextron Systems) id 81a0ecb5-0a41-4ba1-b2ba-c944eb92bfa2 license Sigma · DRL-1.1
view Sigma YAML
title: Add Insecure Download Source To Winget
id: 81a0ecb5-0a41-4ba1-b2ba-c944eb92bfa2
related:
    - id: 05ebafc8-7aa2-4bcd-a269-2aec93f9e842
      type: similar
    - id: c15a46a0-07d4-4c87-b4b6-89207835a83b
      type: similar
status: test
description: |
    Detects usage of winget to add a new insecure (http) download source.
    Winget will not allow the addition of insecure sources, hence this could indicate potential suspicious activity (or typos)
references:
    - https://learn.microsoft.com/en-us/windows/package-manager/winget/source
    - https://github.com/nasbench/Misc-Research/tree/b9596e8109dcdb16ec353f316678927e507a5b8d/LOLBINs/Winget
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-04-17
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\winget.exe'
        - OriginalFileName: 'winget.exe'
    selection_cli:
        CommandLine|contains|all:
            - 'source '
            - 'add '
            - 'http://'
    condition: all of selection_*
falsepositives:
    - False positives might occur if the users are unaware of such control checks
level: high
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