title: HackTool - CobaltStrike BOF Injection Pattern
id: 09706624-b7f6-455d-9d02-adee024cee1d
status: test
description: Detects a typical pattern of a CobaltStrike BOF which inject into other processes
references:
    - https://github.com/boku7/injectAmsiBypass
    - https://github.com/boku7/spawn
author: Christian Burkard (Nextron Systems)
date: 2021-08-04
modified: 2023-11-28
tags:
    - attack.execution
    - attack.defense-impairment
    - attack.t1106
    - attack.t1685
logsource:
    category: process_access
    product: windows
detection:
    selection:
        CallTrace|re: '^C:\\Windows\\SYSTEM32\\ntdll\.dll\+[a-z0-9]{4,6}\|C:\\Windows\\System32\\KERNELBASE\.dll\+[a-z0-9]{4,6}\|UNKNOWN\([A-Z0-9]{16}\)$'
        GrantedAccess:
            - '0x1028'
            - '0x1fffff'
    condition: selection
falsepositives:
    - Unknown
level: high

title: HackTool - HandleKatz Duplicating LSASS Handle
id: b1bd3a59-c1fd-4860-9f40-4dd161a7d1f5
status: test
description: Detects HandleKatz opening LSASS to duplicate its handle to later dump the memory without opening any new handles
references:
    - https://github.com/codewhitesec/HandleKatz
author: Bhabesh Raj (rule), @thefLinkk
date: 2022-06-27
modified: 2023-11-28
tags:
    - attack.execution
    - attack.t1106
    - attack.t1003.001
    - attack.credential-access
logsource:
    category: process_access
    product: windows
detection:
    selection:
        TargetImage|endswith: '\lsass.exe' # Theoretically, can be any benign process holding handle to LSASS
        GrantedAccess: '0x1440' # Only PROCESS_DUP_HANDLE, PROCESS_QUERY_LIMITED_INFORMATION, PROCESS_QUERY_INFORMATION
        # Example: C:\Windows\SYSTEM32\ntdll.dll+9d234\|UNKNOWN(00000000001C119B)
        CallTrace|startswith: 'C:\Windows\System32\ntdll.dll+'
        CallTrace|contains: '|UNKNOWN('
        CallTrace|endswith: ')'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Potential Base64 Decoded From Images
id: 09a910bf-f71f-4737-9c40-88880ba5913d
status: test
description: |
    Detects the use of tail to extract bytes at an offset from an image and then decode the base64 value to create a new file with the decoded content. The detected execution is a bash one-liner.
references:
    - https://www.virustotal.com/gui/file/16bafdf741e7a13137c489f3c8db1334f171c7cb13b62617d691b0a64783cc48/behavior
    - https://www.virustotal.com/gui/file/483fafc64a2b84197e1ef6a3f51e443f84dc5742602e08b9e8ec6ad690b34ed0/behavior
author: Joseliyo Sanchez, @Joseliyo_Jstnk
date: 2023-12-20
tags:
    - attack.stealth
    - attack.t1140
logsource:
    product: macos
    category: process_creation
detection:
    # Example:  /bin/bash sh -c tail -c +21453 '/Volumes/Installer/Installer.app/Contents/Resources/workout-logo.jpeg' | base64 --decode > /tmp/54A0A2CD-FAD1-4D4D-AAF5-5266F6344ABE.zip
    # VT Query: 'behavior_processes:"tail" (behavior_processes:"jpeg" or behavior_processes:"jpg" or behavior_processes:"png" or behavior_processes:"gif") behavior_processes:"base64" behavior_processes:"--decode >" and tag:dmg'
    selection_image:
        Image|endswith: '/bash'
    selection_view:
        CommandLine|contains|all:
            - 'tail'
            - '-c'
    selection_b64:
        CommandLine|contains|all:
            - 'base64'
            - '-d' # Also covers "--decode"
            - '>'
    selection_files:
        CommandLine|contains:
            - '.avif'
            - '.gif'
            - '.jfif'
            - '.jpeg'
            - '.jpg'
            - '.pjp'
            - '.pjpeg'
            - '.png'
            - '.svg'
            - '.webp'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

title: Suspicious Inbox Manipulation Rules
id: ceb55fd0-726e-4656-bf4e-b585b7f7d572
status: test
description: Detects suspicious rules that delete or move messages or folders are set on a user's inbox.
references:
    - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#suspicious-inbox-manipulation-rules
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins
author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
date: 2023-09-03
tags:
    - attack.stealth
    - attack.t1140
logsource:
    product: azure
    service: riskdetection
detection:
    selection:
        riskEventType: 'mcasSuspiciousInboxManipulationRules'
    condition: selection
falsepositives:
    - Actual mailbox rules that are moving items based on their workflow.
level: high

title: Antivirus Hacktool Detection
id: fa0c05b6-8ad3-468d-8231-c1cbccb64fba
status: stable
description: |
    Detects a highly relevant Antivirus alert that reports a hack tool or other attack tool.
    This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
references:
    - https://www.nextron-systems.com/2021/08/16/antivirus-event-analysis-cheat-sheet-v1-8-2/
    - https://www.nextron-systems.com/?s=antivirus
author: Florian Roth (Nextron Systems), Arnim Rupp
date: 2021-08-16
modified: 2024-11-02
tags:
    - attack.execution
    - attack.t1204
logsource:
    category: antivirus
detection:
    selection:
        - Signature|startswith:
              - 'ATK/'  # Sophos
              - 'Exploit.Script.CVE'
              - 'HKTL'
              - 'HTOOL'
              - 'PWS.'
              - 'PWSX'
              - 'SecurityTool'
              # - 'FRP.'
        - Signature|contains:
              - 'Adfind'
              - 'Brutel'
              - 'BruteR'
              - 'Cobalt'
              - 'COBEACON'
              - 'Cometer'
              - 'DumpCreds'
              - 'FastReverseProxy'
              - 'Hacktool'
              - 'Havoc'
              - 'Impacket'
              - 'Keylogger'
              - 'Koadic'
              - 'Mimikatz'
              - 'Nighthawk'
              - 'PentestPowerShell'
              - 'Potato'
              - 'PowerSploit'
              - 'PowerSSH'
              - 'PshlSpy'
              - 'PSWTool'
              - 'PWCrack'
              - 'PWDump'
              - 'Rozena'
              - 'Rusthound'
              - 'Sbelt'
              - 'Seatbelt'
              - 'SecurityTool'
              - 'SharpDump'
              - 'SharpHound'
              - 'Shellcode'
              - 'Sliver'
              - 'Snaffler'
              - 'SOAPHound'
              - 'Splinter'
              - 'Swrort'
              - 'TurtleLoader'
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Suspicious Binaries and Scripts in Public Folder
id: b447f7de-1e53-4cbf-bfb4-f1f6d0b04e4e
status: experimental
description: Detects the creation of a file with a suspicious extension in the public folder, which could indicate potential malicious activity.
references:
    - https://intel.thedfirreport.com/events/view/30032 # Private Report
    - https://intel.thedfirreport.com/eventReports/view/70 # Private Report
    - https://thedfirreport.com/2025/01/27/cobalt-strike-and-a-pair-of-socks-lead-to-lockbit-ransomware/
author: 'The DFIR Report'
date: 2025-01-23
tags:
    - attack.execution
    - attack.t1204
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|contains: ':\Users\Public\'
        TargetFilename|endswith:
            - '.bat'
            - '.dll'
            - '.exe'
            - '.hta'
            - '.js'
            - '.ps1'
            - '.vbe'
            - '.vbs'
    condition: selection
falsepositives:
    - Administrators deploying legitimate binaries to public folders.
level: high
regression_tests_path: regression_data/rules/windows/file/file_event/file_event_win_susp_public_folder_extension/info.yml

title: Symlink Etc Passwd
id: c67fc22a-0be5-4b4f-aad5-2b32c4b69523
status: test
description: Detects suspicious command lines that look as if they would create symbolic links to /etc/passwd
references:
    - https://www.qualys.com/2021/05/04/21nails/21nails.txt
author: Florian Roth (Nextron Systems)
date: 2019-04-05
modified: 2021-11-27
tags:
    - attack.t1204.001
    - attack.execution
logsource:
    product: linux
detection:
    keywords:
        - 'ln -s -f /etc/passwd'
        - 'ln -s /etc/passwd'
    condition: keywords
falsepositives:
    - Unknown
level: high

title: Suspicious ClickFix/FileFix Execution Pattern
id: d487ed4a-fd24-436d-a0b2-f4e95f7b2635
related:
    - id: f5fe36cf-f1ec-4c23-903d-09a3110f6bbb
      type: similar
status: experimental
description: |
    Detects suspicious execution patterns where users are tricked into running malicious commands via clipboard manipulation, either through the Windows Run dialog (ClickFix) or File Explorer address bar (FileFix).
    Attackers leverage social engineering campaigns—such as fake CAPTCHA challenges or urgent alerts—encouraging victims to paste clipboard contents, often executing mshta.exe, powershell.exe, or similar commands to infect systems.
references:
    - https://github.com/JohnHammond/recaptcha-phish
    - https://www.zscaler.com/blogs/security-research/deepseek-lure-using-captchas-spread-malware
    - https://www.threatdown.com/blog/clipboard-hijacker-tries-to-install-a-trojan/
    - https://app.any.run/tasks/5c16b4db-4b36-4039-a0ed-9b09abff8be2
    - https://www.esentire.com/security-advisories/netsupport-rat-clickfix-distribution
    - https://www.scpx.com.au/2025/11/16/decades-old-finger-protocol-abused-in-clickfix-malware-attacks/ # filefix variant
author: montysecurity, Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-11-19
tags:
    - attack.execution
    - attack.t1204.001
    - attack.t1204.004
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|endswith: '\explorer.exe'
        CommandLine|contains: '#'
    selection_cli_captcha:
        CommandLine|contains:
            - 'account'
            - 'anti-bot'
            - 'botcheck'
            - 'captcha'
            - 'challenge'
            - 'confirmation'
            - 'fraud'
            - 'human'
            - 'identification'
            - 'identificator'
            - 'identity'
            - 'robot'
            - 'validation'
            - 'verification'
            - 'verify'
    condition: all of selection_*
falsepositives:
    - Unlikely
level: high

title: Potential ClickFix Execution Pattern - Registry
id: f5fe36cf-f1ec-4c23-903d-09a3110f6bbb
related:
    - id: d487ed4a-fd24-436d-a0b2-f4e95f7b2635
      type: similar
status: experimental
description: |
    Detects potential ClickFix malware execution patterns by monitoring registry modifications in RunMRU keys containing HTTP/HTTPS links.
    ClickFix is known to be distributed through phishing campaigns and uses techniques like clipboard hijacking and fake CAPTCHA pages.
    Through the fakecaptcha pages, the adversary tricks users into opening the Run dialog box and pasting clipboard-hijacked content,
    such as one-liners that execute remotely hosted malicious files or scripts.
references:
    - https://github.com/JohnHammond/recaptcha-phish
    - https://www.zscaler.com/blogs/security-research/deepseek-lure-using-captchas-spread-malware
    - https://www.threatdown.com/blog/clipboard-hijacker-tries-to-install-a-trojan/
    - https://app.any.run/tasks/5c16b4db-4b36-4039-a0ed-9b09abff8be2
    - https://www.esentire.com/security-advisories/netsupport-rat-clickfix-distribution
    - https://medium.com/@boutnaru/the-windows-foreniscs-journey-run-mru-run-dialog-box-most-recently-used-57375a02d724
    - https://unit42.paloaltonetworks.com/preventing-clickfix-attack-vector/
    - https://medium.com/@poudelswachchhanda123/preventing-lnk-and-fakecaptcha-threats-a-system-hardening-approach-2f7b7ed2e493
    - https://www.scpx.com.au/2025/11/16/decades-old-finger-protocol-abused-in-clickfix-malware-attacks/
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-03-25
modified: 2025-11-19
tags:
    - attack.execution
    - attack.t1204.001
logsource:
    category: registry_set
    product: windows
detection:
    selection_registry:
        TargetObject|contains: '\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\RunMRU\'
    selection_details:
        Details|contains:
            - 'http://'
            - 'https://'
    selection_susp_pattern:
        - Details|contains:
              # Add more suspicious keywords
              - 'account'
              - 'anti-bot'
              - 'botcheck'
              - 'captcha'
              - 'challenge'
              - 'confirmation'
              - 'fraud'
              - 'human'
              - 'identification'
              - 'identificator'
              - 'identity'
              - 'robot'
              - 'validation'
              - 'verification'
              - 'verify'
        - Details|contains:
              - '%comspec%'
              - 'bitsadmin'
              - 'certutil'
              - 'cmd'
              - 'cscript'
              - 'curl'
              - 'finger'
              - 'mshta'
              - 'powershell'
              - 'pwsh'
              - 'regsvr32'
              - 'rundll32'
              - 'schtasks'
              - 'wget'
              - 'wscript'
    condition: all of selection_*
falsepositives:
    - Legitimate applications using RunMRU with HTTP links
level: high

title: Suspicious Microsoft Office Child Process - MacOS
id: 69483748-1525-4a6c-95ca-90dc8d431b68
status: test
description: Detects suspicious child processes spawning from microsoft office suite applications such as word or excel. This could indicates malicious macro execution
references:
    - https://redcanary.com/blog/applescript/
    - https://objective-see.org/blog/blog_0x4B.html
author: Sohan G (D4rkCiph3r)
date: 2023-01-31
modified: 2023-02-04
tags:
    - attack.execution
    - attack.persistence
    - attack.t1059.002
    - attack.t1137.002
    - attack.t1204.002
logsource:
    product: macos
    category: process_creation
detection:
    selection:
        ParentImage|contains:
            - 'Microsoft Word'
            - 'Microsoft Excel'
            - 'Microsoft PowerPoint'
            - 'Microsoft OneNote'
        Image|endswith:
            - '/bash'
            - '/curl'
            - '/dash'
            - '/fish'
            - '/osacompile'
            - '/osascript'
            - '/sh'
            - '/zsh'
            - '/python'
            - '/python3'
            - '/wget'
    condition: selection
falsepositives:
    - Unknown
level: high

title: File With Uncommon Extension Created By An Office Application
id: c7a74c80-ba5a-486e-9974-ab9e682bc5e4
status: test
description: Detects the creation of files with an executable or script extension by an Office application.
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 (ThreatIntel), Cyb3rEng (Rule), Nasreddine Bencherchali (Nextron Systems)
date: 2021-08-23
modified: 2025-10-17
tags:
    - attack.t1204.002
    - attack.execution
logsource:
    product: windows
    category: file_event
detection:
    # Note: Please add more file extensions to the logic of your choice.
    selection1:
        Image|endswith:
            - '\excel.exe'
            - '\msaccess.exe'
            - '\mspub.exe'
            - '\powerpnt.exe'
            - '\visio.exe'
            - '\winword.exe'
    selection2:
        TargetFilename|endswith:
            - '.bat'
            - '.cmd'
            - '.com'
            - '.dll'
            - '.exe'
            - '.hta'
            - '.ocx'
            - '.proj'
            - '.ps1'
            - '.scf'
            - '.scr'
            - '.sys'
            - '.vbe'
            - '.vbs'
            - '.wsf'
            - '.wsh'
    filter_main_localassembly:
        TargetFilename|contains: '\AppData\Local\assembly\tmp\'
        TargetFilename|endswith: '.dll'
    filter_optional_webservicecache: # matches e.g. directory with name *.microsoft.com
        TargetFilename|contains|all:
            - 'C:\Users\'
            - '\AppData\Local\Microsoft\Office\'
            - '\WebServiceCache\AllUsers'
        TargetFilename|endswith: '.com'
    filter_optional_webex:
        Image|endswith: '\winword.exe'
        TargetFilename|contains: '\AppData\Local\Temp\webexdelta\'
        TargetFilename|endswith:
            - '.dll'
            - '.exe'
    filter_optional_backstageinappnavcache: # matches e.g. C:\Users\xxxxx\AppData\Local\Microsoft\Office\16.0\BackstageInAppNavCache\ODB-user@domain.com
        TargetFilename|contains|all:
            - 'C:\Users\'
            - '\AppData\Local\Microsoft\Office\'
            - '\BackstageInAppNavCache\'
        TargetFilename|endswith: '.com'
    condition: all of selection* and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: high

title: Suspicious Startup Folder Persistence
id: 28208707-fe31-437f-9a7f-4b1108b94d2e
related:
    - id: 2aa0a6b4-a865-495b-ab51-c28249537b75
      type: similar
status: test
description: |
    Detects the creation of potentially malicious script and executable files in Windows startup folders, which is a common persistence technique used by threat actors.
    These files (.ps1, .vbs, .js, .bat, etc.) are automatically executed when a user logs in, making the Startup folder an attractive target for attackers.
    This technique is frequently observed in malvertising campaigns and malware distribution where attackers attempt to maintain long-term access to compromised systems.
references:
    - https://github.com/last-byte/PersistenceSniper
    - https://www.microsoft.com/en-us/security/blog/2025/03/06/malvertising-campaign-leads-to-info-stealers-hosted-on-github/
    - https://github.com/redcanaryco/atomic-red-team/blob/5ede8f21e42ebe37e0a6eff757dba60bcfa85859/atomics/T1547.001/T1547.001.md
author: Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2022-08-10
modified: 2025-10-12
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.t1204.002
    - attack.persistence
    - attack.t1547.001
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|contains: '\Windows\Start Menu\Programs\Startup\'
        TargetFilename|endswith:
            # Add or remove suspicious extensions according to your env needs
            - '.bat'
            - '.cmd'
            - '.dll'
            - '.hta'
            - '.jar'
            - '.js'
            - '.jse'
            - '.msi'
            - '.ps1'
            - '.psd1'
            - '.psm1'
            - '.scr'
            - '.url'
            - '.vba'
            - '.vbe'
            - '.vbs'
            - '.wsf'
    condition: selection
falsepositives:
    - Rare legitimate usage of some of the extensions mentioned in the rule
level: high

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

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

title: Suspicious Binary In User Directory Spawned From Office Application
id: aa3a6f94-890e-4e22-b634-ffdfd54792cc
status: test
description: Detects an executable in the users directory started from one of the Microsoft Office suite applications (Word, Excel, PowerPoint, Publisher, Visio)
references:
    - https://blog.morphisec.com/fin7-not-finished-morphisec-spots-new-campaign
    - https://www.virustotal.com/gui/file/23160972c6ae07f740800fa28e421a81d7c0ca5d5cab95bc082b4a986fbac57
author: Jason Lynch
date: 2019-04-02
modified: 2023-02-04
tags:
    - attack.execution
    - attack.t1204.002
    - attack.g0046
    - car.2013-05-002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith:
            - '\WINWORD.EXE'
            - '\EXCEL.EXE'
            - '\POWERPNT.exe'
            - '\MSPUB.exe'
            - '\VISIO.exe'
            - '\MSACCESS.exe'
            - '\EQNEDT32.exe'
            # - '\OUTLOOK.EXE' too many FPs
        Image|startswith: 'C:\users\'
        Image|endswith: '.exe'
    filter:
        Image|endswith: '\Teams.exe'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

title: Suspicious Outlook Child Process
id: 208748f7-881d-47ac-a29c-07ea84bf691d
related:
    - id: 438025f9-5856-4663-83f7-52f878a70a50 # Office Child Processes
      type: derived
    - id: e212d415-0e93-435f-9e1a-f29005bb4723 # Outlook Remote Child Process
      type: derived
status: test
description: Detects a suspicious process spawning from an Outlook process.
references:
    - https://www.hybrid-analysis.com/sample/465aabe132ccb949e75b8ab9c5bda36d80cf2fd503d52b8bad54e295f28bbc21?environmentId=100
    - https://mgreen27.github.io/posts/2018/04/02/DownloadCradle.html
author: Michael Haag, Florian Roth (Nextron Systems), Markus Neis, Elastic, FPT.EagleEye Team
date: 2022-02-28
modified: 2023-02-04
tags:
    - attack.execution
    - attack.t1204.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\OUTLOOK.EXE'
        Image|endswith:
            - '\AppVLP.exe'
            - '\bash.exe'
            - '\cmd.exe'
            - '\cscript.exe'
            - '\forfiles.exe'
            - '\hh.exe'
            - '\mftrace.exe'
            - '\msbuild.exe'        # https://github.com/elastic/detection-rules/blob/c76a39796972ecde44cb1da6df47f1b6562c9770/rules/windows/defense_evasion_execution_msbuild_started_by_office_app.toml
            - '\msdt.exe'           # CVE-2022-30190
            - '\mshta.exe'
            - '\msiexec.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\regsvr32.exe'
            - '\schtasks.exe'
            - '\scrcons.exe'
            - '\scriptrunner.exe'
            - '\sh.exe'
            - '\svchost.exe'        # https://www.vmray.com/analyses/2d2fa29185ad/report/overview.html
            - '\wmic.exe'           # https://app.any.run/tasks/c903e9c8-0350-440c-8688-3881b556b8e0/
            - '\wscript.exe'
            # Several FPs with rundll32.exe
            # We started excluding specific use cases and ended up commenting out the rundll32.exe sub processes completely
            # - '\rundll32.exe'
            # filter_outlook_photoviewer:  # https://twitter.com/Luke_Hamp/status/1495919717760237568
            #   ParentImage|endswith: '\OUTLOOK.EXE'
            #   Image|endswith: '\rundll32.exe'
            #   CommandLine|contains: '\PhotoViewer.dll'
            # filter_outlook_printattachments:  # https://twitter.com/KickaKamil/status/1496238278659485696
            #   ParentImage|endswith: '\OUTLOOK.EXE'
            #   Image|endswith: '\rundll32.exe'
            #   CommandLine|contains|all:
            #     - 'shell32.dll,Control_RunDLL'
            #     - '\SYSTEM32\SPOOL\DRIVERS\'
    condition: selection # and not 1 of filter*
falsepositives:
    - Unknown
level: high

title: Suspicious LNK Command-Line Padding with Whitespace Characters
id: dd8756e7-a3a0-4768-b47e-8f545d1a751c
status: experimental
description: |
    Detects exploitation of LNK file command-line length discrepancy, where attackers hide malicious commands beyond the 260-character UI limit while the actual command-line argument field supports 4096 characters using whitespace padding (e.g., 0x20, 0x09-0x0D).
    Adversaries insert non-printable whitespace characters (e.g., Line Feed \x0A, Carriage Return \x0D) to pad the visible section of the LNK file, pushing malicious commands past the UI-visible boundary.
    The hidden payload, executed at runtime but invisible in Windows Explorer properties, enables stealthy execution and evasion—commonly used for social engineering attacks.
    This rule flags suspicious use of such padding observed in real-world attacks.
references:
    - https://syedhasan010.medium.com/forensics-analysis-of-an-lnk-file-da68a98b8415
    - https://thehackernews.com/2025/03/unpatched-windows-zero-day-flaw.html
    - https://www.trendmicro.com/en_us/research/25/c/windows-shortcut-zero-day-exploit.html
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-03-19
tags:
    - attack.initial-access
    - attack.execution
    - attack.t1204.002
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - ParentImage|endswith: '\explorer.exe'
        - ParentCommandLine|contains: '.lnk'
    selection_cmd:
        - CommandLine|contains:
              - '                 '  # Padding of SPACE (0x20)
            # - '	'  # Horizontal Tab (0x9)
              - '\u0009'
              - '\u000A' # Line Feed
              - '\u0011'
              - '\u0012'
              - '\u0013'
              - '\u000B' # Vertical Tab
              - '\u000C'  # \x0C
              - '\u000D'  # \x0D
        - CommandLine|re: '\n\n\n\n\n\n' # In some cases \u000[ABCD] are represented as a newline in the eventlog
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

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

title: MMC Executing Files with Reversed Extensions Using RTLO Abuse
id: 9cfe4b27-1e56-48b4-b7a8-d46851c91a44
status: experimental
description: Detects malicious behavior where the MMC utility (`mmc.exe`) executes files with reversed extensions caused by Right-to-Left Override (RLO) abuse, disguising them as document formats.
references:
    - https://www.unicode.org/versions/Unicode5.2.0/ch02.pdf
    - https://en.wikipedia.org/wiki/Right-to-left_override
    - https://tria.ge/241015-l98snsyeje/behavioral2
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-02-05
tags:
    - attack.execution
    - attack.stealth
    - attack.t1204.002
    - attack.t1218.014
    - attack.t1036.002
logsource:
    category: process_creation
    product: windows
detection:
    selection_image:
        - Image|endswith: '\mmc.exe'
        - OriginalFileName: 'MMC.exe'
    selection_commandline:
        CommandLine|contains: # While looking at these files the prefix of their name will look something like csm.pdf, but in reality it is msc file
            - 'cod.msc'  # Reversed `.doc`
            - 'fdp.msc'  # Reversed `.pdf`
            - 'ftr.msc'  # Reversed `.rtf`
            - 'lmth.msc'  # Reversed `.html`
            - 'slx.msc'  # Reversed `.xls`
            - 'tdo.msc'  # Reversed `.odt`
            - 'xcod.msc'  # Reversed `.docx`
            - 'xslx.msc'  # Reversed `.xlsx`
            - 'xtpp.msc'  # Reversed `.pptx`
    condition: all of selection_*
falsepositives:
    - Legitimate administrative actions using MMC to execute misnamed `.msc` files.
    - Unconventional but non-malicious usage of RLO or reversed extensions.
level: high

title: HackTool - LittleCorporal Generated Maldoc Injection
id: 7bdde3bf-2a42-4c39-aa31-a92b3e17afac
status: test
description: Detects the process injection of a LittleCorporal generated Maldoc.
references:
    - https://github.com/connormcgarr/LittleCorporal
author: Christian Burkard (Nextron Systems)
date: 2021-08-09
modified: 2023-11-28
tags:
    - attack.execution
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1204.002
    - attack.t1055.003
logsource:
    category: process_access
    product: windows
detection:
    selection:
        SourceImage|endswith: '\winword.exe'
        CallTrace|contains|all:
            - ':\Windows\Microsoft.NET\Framework64\v2.'
            - 'UNKNOWN'
    condition: selection
falsepositives:
    - Unknown
level: high

title: VBA DLL Loaded Via Office Application
id: e6ce8457-68b1-485b-9bdd-3c2b5d679aa9
status: test
description: Detects VB DLL's loaded by an office application. Which could indicate the presence of VBA Macros.
references:
    - https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16
author: Antonlovesdnb
date: 2020-02-19
modified: 2023-02-10
tags:
    - attack.execution
    - attack.t1204.002
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith:
            - '\excel.exe'
            - '\mspub.exe'
            - '\onenote.exe'
            - '\onenoteim.exe' # Just in case
            - '\outlook.exe'
            - '\powerpnt.exe'
            - '\winword.exe'
        ImageLoaded|endswith:
            - '\VBE7.DLL'
            - '\VBEUI.DLL'
            - '\VBE7INTL.DLL'
    condition: selection
falsepositives:
    - Legitimate macro usage. Add the appropriate filter according to your environment
level: high

title: GAC DLL Loaded Via Office Applications
id: 90217a70-13fc-48e4-b3db-0d836c5824ac
status: test
description: Detects any GAC DLL being loaded by an Office Product
references:
    - https://medium.com/threatpunter/detecting-adversary-tradecraft-with-image-load-event-logging-and-eql-8de93338c16
author: Antonlovesdnb
date: 2020-02-19
modified: 2023-02-10
tags:
    - attack.execution
    - attack.t1204.002
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith:
            - '\excel.exe'
            - '\mspub.exe'
            - '\onenote.exe'
            - '\onenoteim.exe' # Just in case
            - '\outlook.exe'
            - '\powerpnt.exe'
            - '\winword.exe'
        ImageLoaded|startswith: 'C:\Windows\Microsoft.NET\assembly\GAC_MSIL'
    condition: selection
falsepositives:
    - Legitimate macro usage. Add the appropriate filter according to your environment
level: high

title: Flash Player Update from Suspicious Location
id: 4922a5dd-6743-4fc2-8e81-144374280997
status: test
description: Detects a flashplayer update from an unofficial location
references:
    - https://gist.github.com/roycewilliams/a723aaf8a6ac3ba4f817847610935cfb
author: Florian Roth (Nextron Systems)
date: 2017-10-25
modified: 2022-08-08
tags:
    - attack.initial-access
    - attack.stealth
    - attack.t1189
    - attack.execution
    - attack.t1204.002
    - attack.t1036.005
logsource:
    category: proxy
detection:
    selection:
        - c-uri|contains: '/flash_install.php'
        - c-uri|endswith: '/install_flash_player.exe'
    filter:
        cs-host|endswith: '.adobe.com'
    condition: selection and not filter
falsepositives:
    - Unknown flash download locations
level: high

title: OpenCanary - GIT Clone Request
id: 4fe17521-aef3-4e6a-9d6b-4a7c8de155a8
status: test
description: Detects instances where a GIT service on an OpenCanary node has had Git Clone 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.collection
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 16001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Potential RemoteFXvGPUDisablement.EXE Abuse
id: f65e22f9-819e-4f96-9c7b-498364ae7a25
related:
    - id: a6fc3c46-23b8-4996-9ea2-573f4c4d88c5 # ProcCreation
      type: similar
    - id: 38a7625e-b2cb-485d-b83d-aff137d859f4 # PS Module
      type: similar
    - id: cacef8fc-9d3d-41f7-956d-455c6e881bc5 # PS ScriptBlock
      type: similar
status: test
description: Detects PowerShell module creation where the module Contents are set to "function Get-VMRemoteFXPhysicalVideoAdapter". This could be a sign of potential abuse of  the "RemoteFXvGPUDisablement.exe" binary which is known to be vulnerable to module load-order hijacking.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1
author: frack113, Nasreddine Bencherchali (Nextron Systems)
date: 2021-07-13
modified: 2023-05-09
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    service: powershell-classic
    definition: fields have to be extract from event
detection:
    selection:
        Data|contains: 'ModuleContents=function Get-VMRemoteFXPhysicalVideoAdapter {'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell Module
id: 38a7625e-b2cb-485d-b83d-aff137d859f4
related:
    - id: a6fc3c46-23b8-4996-9ea2-573f4c4d88c5 # ProcCreation
      type: similar
    - id: f65e22f9-819e-4f96-9c7b-498364ae7a25 # PS Classic
      type: similar
    - id: cacef8fc-9d3d-41f7-956d-455c6e881bc5 # PS ScriptBlock
      type: similar
status: test
description: Detects PowerShell module creation where the module Contents are set to "function Get-VMRemoteFXPhysicalVideoAdapter". This could be a sign of potential abuse of the "RemoteFXvGPUDisablement.exe" binary which is known to be vulnerable to module load-order hijacking.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1
author: Nasreddine Bencherchali (Nextron Systems), frack113
date: 2021-07-13
modified: 2023-05-09
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection:
        Payload|contains: 'ModuleContents=function Get-VMRemoteFXPhysicalVideoAdapter {'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Potential RemoteFXvGPUDisablement.EXE Abuse - PowerShell ScriptBlock
id: cacef8fc-9d3d-41f7-956d-455c6e881bc5
related:
    - id: a6fc3c46-23b8-4996-9ea2-573f4c4d88c5 # ProcCreation
      type: similar
    - id: f65e22f9-819e-4f96-9c7b-498364ae7a25 # PS Classic
      type: similar
    - id: 38a7625e-b2cb-485d-b83d-aff137d859f4 # PS Module
      type: similar
status: test
description: Detects PowerShell module creation where the module Contents are set to "function Get-VMRemoteFXPhysicalVideoAdapter". This could be a sign of potential abuse of the "RemoteFXvGPUDisablement.exe" binary which is known to be vulnerable to module load-order hijacking.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-09
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: ps_script
    definition: bade5735-5ab0-4aa7-a642-a11be0e40872
detection:
    selection:
        ScriptBlockText|startswith: 'function Get-VMRemoteFXPhysicalVideoAdapter {'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Network Connection Initiated By AddinUtil.EXE
id: 5205613d-2a63-4412-a895-3a2458b587b3
status: test
description: |
    Detects a network connection initiated by the Add-In deployment cache updating utility "AddInutil.exe".
    This could indicate a potential command and control communication as this tool doesn't usually initiate network activity.
references:
    - https://www.blue-prints.blog/content/blog/posts/lolbin/addinutil-lolbas.html
author: Michael McKinley (@McKinleyMike), Tony Latteri (@TheLatteri)
date: 2023-09-18
modified: 2024-07-16
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Initiated: 'true'
        Image|endswith: '\addinutil.exe'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Legitimate Application Dropped Script
id: 7d604714-e071-49ff-8726-edeb95a70679
status: test
description: Detects programs on a Windows system that should not write scripts to disk
references:
    - https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326
author: frack113, Florian Roth (Nextron Systems)
date: 2022-08-21
modified: 2023-06-22
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith:
            # Microsoft Office Programs Dropping Executables / Rest of the apps are covered in: c7a74c80-ba5a-486e-9974-ab9e682bc5e4
            - \eqnedt32.exe
            - \wordpad.exe
            - \wordview.exe
            # LOLBINs that can be used to download executables
            - \certutil.exe
            - \certoc.exe
            - \CertReq.exe
            # - \bitsadmin.exe (depends on the environment; comment in if you're sure that bitsadmin doesn't do that in your env)
            - \Desktopimgdownldr.exe
            - \esentutl.exe
            # - \expand.exe
            - '\mshta.exe'
            # Executables that should never drop an executable to disk (but may after a previous process injection or if it's malware that uses a legitimate name)
            - '\AcroRd32.exe'
            - '\RdrCEF.exe'
            - '\hh.exe'
            - '\finger.exe'
        TargetFilename|endswith:
            - '.ps1'
            - '.bat'
            - '.vbs'
            - '.scf'
            - '.wsf'
            - '.wsh'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Legitimate Application Dropped Executable
id: f0540f7e-2db3-4432-b9e0-3965486744bc
status: test
description: Detects programs on a Windows system that should not write executables to disk
references:
    - https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326
author: frack113, Florian Roth (Nextron Systems)
date: 2022-08-21
modified: 2023-06-22
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith:
            # Microsoft Office Programs Dropping Executables / Rest of the apps are covered in: c7a74c80-ba5a-486e-9974-ab9e682bc5e4
            - '\eqnedt32.exe'
            - '\wordpad.exe'
            - '\wordview.exe'
            # LOLBINs that can be used to download executables
            - '\certutil.exe'
            - '\certoc.exe'
            - '\CertReq.exe'
            # - \bitsadmin.exe (depends on the environment; comment in if you're sure that bitsadmin doesn't do that in your env)
            - '\Desktopimgdownldr.exe'
            - '\esentutl.exe'
            # - \expand.exe
            - '\mshta.exe'
            # Executables that should never drop an executable to disk (but may after a previous process injection or if it's malware that uses a legitimate name)
            - '\AcroRd32.exe'
            - '\RdrCEF.exe'
            - '\hh.exe'
            - '\finger.exe'
        TargetFilename|endswith:
            - '.exe'
            - '.dll'
            - '.ocx'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Suspicious DotNET CLR Usage Log Artifact
id: e0b06658-7d1d-4cd3-bf15-03467507ff7c
related:
    - id: 4508a70e-97ef-4300-b62b-ff27992990ea
      type: derived
    - id: e4b63079-6198-405c-abd7-3fe8b0ce3263
      type: obsolete
status: test
description: Detects the creation of Usage Log files by the CLR (clr.dll). These files are named after the executing process once the assembly is finished executing for the first time in the (user) session context.
references:
    - https://bohops.com/2021/03/16/investigating-net-clr-usage-log-tampering-techniques-for-edr-evasion/
    - https://github.com/olafhartong/sysmon-modular/blob/fa1ae53132403d262be2bbd7f17ceea7e15e8c78/11_file_create/include_dotnet.xml
    - https://web.archive.org/web/20221026202428/https://gist.github.com/code-scrap/d7f152ffcdb3e0b02f7f394f5187f008
    - https://web.archive.org/web/20230329154538/https://blog.menasec.net/2019/07/interesting-difr-traces-of-net-clr.html
author: frack113, omkar72, oscd.community, Wojciech Lesicki
date: 2022-11-18
modified: 2023-02-23
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: file_event
    product: windows
    definition: 'Requirements: UsageLogs folder must be monitored by the sysmon configuration'
detection:
    selection:
        TargetFilename|endswith:
            - '\UsageLogs\cmstp.exe.log'
            - '\UsageLogs\cscript.exe.log'
            - '\UsageLogs\mshta.exe.log'
            - '\UsageLogs\msxsl.exe.log'
            - '\UsageLogs\regsvr32.exe.log'
            - '\UsageLogs\rundll32.exe.log'
            - '\UsageLogs\svchost.exe.log'
            - '\UsageLogs\wscript.exe.log'
            - '\UsageLogs\wmic.exe.log'
    filter_main_rundll32:
        # This filter requires the event to be enriched by additional information such as ParentImage and CommandLine activity
        ParentImage|endswith: '\MsiExec.exe'
        ParentCommandLine|contains: ' -Embedding'
        Image|endswith: '\rundll32.exe'
        CommandLine|contains|all:
            - 'Temp'
            - 'zzzzInvokeManagedCustomActionOutOfProc'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Rundll32.exe with zzzzInvokeManagedCustomActionOutOfProc in command line and msiexec.exe as parent process - https://twitter.com/SBousseaden/status/1388064061087260675
level: high

title: Legitimate Application Writing Files In Uncommon Location
id: 1cf465a1-2609-4c15-9b66-c32dbe4bfd67
related:
    - id: 2ddef153-167b-4e89-86b6-757a9e65dcac # bitsadmin dedicated rule
      type: similar
status: experimental
description: |
    Detects legitimate applications writing any type of file to uncommon or suspicious locations that are not typical for application data storage or execution.
    Adversaries may leverage legitimate applications (Living off the Land Binaries - LOLBins) to drop or download malicious files to uncommon locations on the system to evade detection by security solutions.
references:
    - https://lolbas-project.github.io/#/download
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-12-10
tags:
    - attack.stealth
    - attack.t1218
    - attack.command-and-control
    - attack.t1105
logsource:
    product: windows
    category: file_event
detection:
    selection_img:
        Image|endswith:
            # Microsoft Office Programs Dropping Executables / Rest of the apps are covered in: c7a74c80-ba5a-486e-9974-ab9e682bc5e4
            - '\eqnedt32.exe'
            - '\wordpad.exe'
            - '\wordview.exe'
            # LOLBINs that can be used to download executables
            - '\cmdl32.exe'
            - '\certutil.exe'
            - '\certoc.exe'
            - '\CertReq.exe'
            - '\bitsadmin.exe'
            - '\Desktopimgdownldr.exe'
            - '\esentutl.exe'
            - '\expand.exe'
            - '\extrac32.exe'
            - '\replace.exe'
            - '\mshta.exe'
            - '\ftp.exe'
            - '\Ldifde.exe'
            - '\RdrCEF.exe'
            - '\hh.exe'
            - '\finger.exe'
            - '\findstr.exe'
    selection_locations:
        TargetFilename|contains:
            - ':\Perflogs'
            - ':\ProgramData\'
            - ':\Temp\'
            - ':\Users\Public\'
            - ':\Windows\'
            - '\$Recycle.Bin\'
            - '\AppData\Local\'
            - '\AppData\Roaming\'
            - '\Contacts\'
            - '\Desktop\'
            - '\Favorites\'
            - '\Favourites\'
            - '\inetpub\wwwroot\'
            - '\Music\'
            - '\Pictures\'
            - '\Start Menu\Programs\Startup\'
            - '\Users\Default\'
            - '\Videos\'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
regression_tests_path: regression_data/rules/windows/file/file_event/file_event_win_susp_legitimate_app_dropping_in_uncommon_location/info.yml

title: Legitimate Application Dropped Archive
id: 654fcc6d-840d-4844-9b07-2c3300e54a26
status: test
description: Detects programs on a Windows system that should not write an archive to disk
references:
    - https://github.com/Neo23x0/sysmon-config/blob/3f808d9c022c507aae21a9346afba4a59dd533b9/sysmonconfig-export-block.xml#L1326
author: frack113, Florian Roth
date: 2022-08-21
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith:
            # Microsoft Office Programs Dropping Executables
            - \winword.exe
            - \excel.exe
            - \powerpnt.exe
            - \msaccess.exe
            - \mspub.exe
            - \eqnedt32.exe
            - \visio.exe
            - \wordpad.exe
            - \wordview.exe
            # LOLBINs that can be used to download executables
            - \certutil.exe
            - \certoc.exe
            - \CertReq.exe
            # - \bitsadmin.exe (depends on the environment; comment in if you're sure that bitsadmin doesn't do that in your env)
            - \Desktopimgdownldr.exe
            - \esentutl.exe
            # - \expand.exe
            - \finger.exe
            # Executables that should never drop an executable to disk (but may after a previous process injection or if it's malware that uses a legitimate name)
            - \notepad.exe
            - \AcroRd32.exe
            - \RdrCEF.exe
            - \mshta.exe
            - \hh.exe
        TargetFilename|endswith:
            - '.zip'
            - '.rar'
            - '.7z'
            - '.diagcab'
            - '.appx'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Suspicious Speech Runtime Binary Child Process
id: 78f10490-f2f4-4d19-a75b-4e0683bf3b8d
status: experimental
description: |
    Detects suspicious Speech Runtime Binary Execution by monitoring its child processes.
    Child processes spawned by SpeechRuntime.exe could indicate an attempt for lateral movement via COM & DCOM hijacking.
references:
    - https://github.com/rtecCyberSec/SpeechRuntimeMove
author: andrewdanis
date: 2025-10-23
logsource:
    category: process_creation
    product: windows
tags:
    - attack.lateral-movement
    - attack.stealth
    - attack.t1021.003
    - attack.t1218
detection:
    selection:
        ParentImage|endswith: '\SpeechRuntime.exe'
    condition: selection
falsepositives:
    - Unlikely.
level: high

title: Execution via WorkFolders.exe
id: 0bbc6369-43e3-453d-9944-cae58821c173
status: test
description: Detects using WorkFolders.exe to execute an arbitrary control.exe
references:
    - https://twitter.com/elliotkillick/status/1449812843772227588
author: Maxime Thiebaut (@0xThiebaut)
date: 2021-10-21
modified: 2022-12-25
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\control.exe'
        ParentImage|endswith: '\WorkFolders.exe'
    filter:
        Image: 'C:\Windows\System32\control.exe'
    condition: selection and not filter
falsepositives:
    - Legitimate usage of the uncommon Windows Work Folders feature.
level: high

title: Execute Pcwrun.EXE To Leverage Follina
id: 6004abd0-afa4-4557-ba90-49d172e0a299
status: test
description: Detects indirect command execution via Program Compatibility Assistant "pcwrun.exe" leveraging the follina (CVE-2022-30190) vulnerability
references:
    - https://twitter.com/nas_bench/status/1535663791362519040
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-13
tags:
    - attack.stealth
    - attack.t1218
    - attack.execution
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\pcwrun.exe'
        CommandLine|contains: '../'
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Time Travel Debugging Utility Usage
id: 0b4ae027-2a2d-4b93-8c7e-962caaba5b2a
related:
    - id: e76c8240-d68f-4773-8880-5c6f63595aaf
      type: derived
status: test
description: Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Tttracer/
    - https://twitter.com/mattifestation/status/1196390321783025666
    - https://twitter.com/oulusoyum/status/1191329746069655553
author: 'Ensar Şamil, @sblmsrsn, @oscd_initiative'
date: 2020-10-06
modified: 2022-10-09
tags:
    - attack.credential-access
    - attack.stealth
    - attack.t1218
    - attack.t1003.001
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        ParentImage|endswith: '\tttracer.exe'
    condition: selection
falsepositives:
    - Legitimate usage by software developers/testers
level: high

title: Suspicious Provlaunch.EXE Child Process
id: f9999590-1f94-4a34-a91e-951e47bedefd
related:
    - id: 7f5d1c9a-3e83-48df-95a7-2b98aae6c13c # CLI Generic
      type: similar
    - id: 2a4b3e61-9d22-4e4a-b60f-6e8f0cde6f25 # CLI Registry
      type: similar
    - id: 7021255e-5db3-4946-a8b9-0ba7a4644a69 # Registry
      type: similar
status: test
description: Detects suspicious child processes of "provlaunch.exe" which might indicate potential abuse to proxy execution.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Provlaunch/
    - https://twitter.com/0gtweet/status/1674399582162153472
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-08
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|endswith: '\provlaunch.exe'
    selection_child:
        - Image|endswith:
              - '\calc.exe'
              - '\cmd.exe'
              - '\cscript.exe'
              - '\mshta.exe'
              - '\notepad.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\regsvr32.exe'
              - '\rundll32.exe'
              - '\wscript.exe'
        - Image|contains:
              - ':\PerfLogs\'
              - ':\Temp\'
              - ':\Users\Public\'
              - '\AppData\Temp\'
              - '\Windows\System32\Tasks\'
              - '\Windows\Tasks\'
              - '\Windows\Temp\'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

title: Renamed MegaSync Execution
id: 643bdcac-8b82-49f4-9fd9-25a90b929f3b
status: test
description: Detects the execution of a renamed MegaSync.exe as seen used by ransomware families like Nefilim, Sodinokibi, Pysa, and Conti.
references:
    - https://redcanary.com/blog/rclone-mega-extortion/
author: Sittikorn S
date: 2021-06-22
modified: 2023-02-03
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        OriginalFileName: 'megasync.exe'
    filter:
        Image|endswith: '\megasync.exe'
    condition: selection and not filter
falsepositives:
    - Software that illegally integrates MegaSync in a renamed form
    - Administrators that have renamed MegaSync
level: high

title: Uncommon Child Process Of Setres.EXE
id: 835e75bf-4bfd-47a4-b8a6-b766cac8bcb7
status: test
description: |
    Detects uncommon child process of Setres.EXE.
    Setres.EXE is a Windows server only process and tool that can be used to set the screen resolution.
    It can potentially be abused in order to launch any arbitrary file with a name containing the word "choice" from the current execution path.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Setres/
    - https://twitter.com/0gtweet/status/1583356502340870144
    - https://strontic.github.io/xcyclopedia/library/setres.exe-0E30E4C09637D7A128A37B59A3BC4D09.html
    - https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731033(v=ws.11)
author: '@gott_cyber, Nasreddine Bencherchali (Nextron Systems)'
date: 2022-12-11
modified: 2024-06-26
tags:
    - attack.stealth
    - attack.t1218
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\setres.exe'
        Image|contains: '\choice'
    filter_main_legit_location:
        Image|endswith:
            - 'C:\Windows\System32\choice.exe'
            - 'C:\Windows\SysWOW64\choice.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unlikely
level: high

title: Suspicious AddinUtil.EXE CommandLine Execution
id: 631b22a4-70f4-4e2f-9ea8-42f84d9df6d8
status: test
description: |
    Detects execution of the Add-In deployment cache updating utility (AddInutil.exe) with suspicious Addinroot or Pipelineroot paths. An adversary may execute AddinUtil.exe with uncommon Addinroot/Pipelineroot paths that point to the adversaries Addins.Store payload.
references:
    - https://www.blue-prints.blog/content/blog/posts/lolbin/addinutil-lolbas.html
author: Nasreddine Bencherchali (Nextron Systems), Michael McKinley (@McKinleyMike), Tony Latteri (@TheLatteri)
date: 2023-09-18
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\addinutil.exe'
        - OriginalFileName: 'AddInUtil.exe'
    selection_susp_1_flags:
        CommandLine|contains:
            - '-AddInRoot:'
            - '-PipelineRoot:'
    selection_susp_1_paths:
        CommandLine|contains:
            - '\AppData\Local\Temp\'
            - '\Desktop\'
            - '\Downloads\'
            - '\Users\Public\'
            - '\Windows\Temp\'
    selection_susp_2:
        CommandLine|contains:
            - '-AddInRoot:.'
            - '-AddInRoot:"."'
            - '-PipelineRoot:.'
            - '-PipelineRoot:"."'
        CurrentDirectory|contains:
            - '\AppData\Local\Temp\'
            - '\Desktop\'
            - '\Downloads\'
            - '\Users\Public\'
            - '\Windows\Temp\'
    condition: selection_img and (all of selection_susp_1_* or selection_susp_2)
falsepositives:
    - Unknown
level: high

title: Execution via stordiag.exe
id: 961e0abb-1b1e-4c84-a453-aafe56ad0d34
status: test
description: Detects the use of stordiag.exe to execute schtasks.exe systeminfo.exe and fltmc.exe
references:
    - https://strontic.github.io/xcyclopedia/library/stordiag.exe-1F08FC87C373673944F6A7E8B18CD845.html
    - https://twitter.com/eral4m/status/1451112385041911809
author: Austin Songer (@austinsonger)
date: 2021-10-21
modified: 2022-12-25
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\stordiag.exe'
        Image|endswith:
            - '\schtasks.exe'
            - '\systeminfo.exe'
            - '\fltmc.exe'
    filter:
        ParentImage|startswith: # as first is "Copy c:\windows\system32\stordiag.exe to a folder"
            - 'c:\windows\system32\'
            - 'c:\windows\syswow64\'
    condition: selection and not filter
falsepositives:
    - Legitimate usage of stordiag.exe.
level: high

title: Potentially Suspicious Child Processes Spawned by ConHost
id: dfa03a09-8b92-4d83-8e74-f72839b1c407
related:
    - id: 7dc2dedd-7603-461a-bc13-15803d132355
      type: similar
status: experimental
description: Detects suspicious child processes related to Windows Shell utilities spawned by `conhost.exe`, which could indicate malicious activity using trusted system components.
references:
    - https://tria.ge/241015-l98snsyeje/behavioral2
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-02-05
tags:
    - attack.stealth
    - attack.t1202
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|endswith: '\conhost.exe'
    selection_child:
        - Image|endswith:
              - '\cmd.exe'             # Windows Command Prompt
              - '\cscript.exe'         # Windows Script Host (used for scripting exploits)
              - '\mshta.exe'           # MSHTA (HTML Application Host, often abused)
              - '\powershell_ise.exe'  # PowerShell ISE
              - '\powershell.exe'      # Windows PowerShell
              - '\pwsh.exe'            # PowerShell Core
              - '\regsvr32.exe'        # Windows Registry Server (commonly used for exploits)
              - '\wscript.exe'         # Windows Script Host (for executing scripts)
        - OriginalFileName:
              - 'cmd.exe'
              - 'cscript.exe'
              - 'mshta.exe'
              - 'powershell_ise.exe'
              - 'powershell.exe'
              - 'pwsh.dll'
              - 'regsvr32.exe'
              - 'wscript.exe'
    condition: all of selection_*
falsepositives:
    - Legitimate administrative tasks using `conhost.exe` to spawn child processes such as `cmd.exe`, `powershell.exe`, or `regsvr32.exe`.
level: high

title: Suspicious AgentExecutor PowerShell Execution
id: c0b40568-b1e9-4b03-8d6c-b096da6da9ab
related:
    - id: 7efd2c8d-8b18-45b7-947d-adfe9ed04f61
      type: similar
status: test
description: Detects execution of the AgentExecutor.exe binary. Which can be abused as a LOLBIN to execute powershell scripts with the ExecutionPolicy "Bypass" or any binary named "powershell.exe" located in the path provided by 6th positional argument
author: Nasreddine Bencherchali (Nextron Systems), memory-shards
references:
    - https://twitter.com/lefterispan/status/1286259016436514816
    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/Agentexecutor/
    - https://learn.microsoft.com/en-us/mem/intune/apps/intune-management-extension
    - https://twitter.com/jseerden/status/1247985304667066373/photo/1
date: 2022-12-24
modified: 2024-08-07
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\AgentExecutor.exe'
        - OriginalFileName: 'AgentExecutor.exe'
    selection_cli:
        # Example:
        #   AgentExecutor.exe -powershell [scriptPath] [outputFilePath] [errorFilePath] [timeoutFilePath] [timeoutSeconds] [powershellPath] [enforceSignatureCheck] [runAs32BitOn64]
        # Note:
        #   - If [timeoutSeconds] is NULL then it defaults to 60000
        #   - If [enforceSignatureCheck] is:
        #       - "NULL" or "1" then a PowerShell instance is spawned with the args: "-NoProfile -executionPolicy allsigned -file "
        #       - Else a PowerShell instance is spawned with the args: "-NoProfile -executionPolicy bypass -file "
        #   - [powershellPath] is always concatendated to "powershell.exe"
        CommandLine|contains:
            - ' -powershell' # Also covers the "-powershellDetection" flag
            - ' -remediationScript'
    filter_main_pwsh:
        CommandLine|contains:
            - 'C:\Windows\System32\WindowsPowerShell\v1.0\'
            - 'C:\Windows\SysWOW64\WindowsPowerShell\v1.0\'
    filter_main_intune:
        ParentImage|endswith: '\Microsoft.Management.Services.IntuneWindowsAgent.exe'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Unknown
level: high

title: Winrs Local Command Execution
id: bcfece3d-56fe-4545-9931-3b8e92927db1
status: experimental
description: |
    Detects the execution of Winrs.exe where it is used to execute commands locally.
    Commands executed this way are launched under Winrshost.exe and can represent proxy execution used for defense evasion or lateral movement.
references:
    - https://cardinalops.com/blog/living-off-winrm-abusing-complexity-in-remote-management/
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/winrs
author: Liran Ravich, Nasreddine Bencherchali
date: 2025-10-22
tags:
    - attack.lateral-movement
    - attack.stealth
    - attack.t1021.006
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        # Note: Example of command to simulate (winrm needs to be enabled): "c:\Windows\System32\winrs.exe" calc.exe
        - Image|endswith: '\winrs.exe'
        - OriginalFileName: 'winrs.exe'
    selection_local_ip:
        CommandLine|contains|windash:
            - '/r:localhost'
            - '/r:127.0.0.1'
            - '/r:[::1]'
            - '/remote:localhost'
            - '/remote:127.0.0.1'
            - '/remote:[::1]'
    filter_main_remote:
        CommandLine|contains|windash:
            - "/r:"
            - "/remote:"
    condition: all of selection_* or (selection_img and not 1 of filter_main_*)
falsepositives:
    - Unlikely
level: high

title: Potential Suspicious Mofcomp Execution
id: 1dd05363-104e-4b4a-b963-196a534b03a1
status: test
description: |
    Detects execution of the "mofcomp" utility as a child of a suspicious shell or script running utility or by having a suspicious path in the commandline.
    The "mofcomp" utility parses a file containing MOF statements and adds the classes and class instances defined in the file to the WMI repository.
    Attackers abuse this utility to install malicious MOF scripts
references:
    - https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/
    - https://github.com/The-DFIR-Report/Sigma-Rules/blob/75260568a7ffe61b2458ca05f6f25914efb44337/win_mofcomp_execution.yml
    - https://learn.microsoft.com/en-us/windows/win32/wmisdk/mofcomp
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-07-12
modified: 2023-04-11
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\mofcomp.exe'
        - OriginalFileName: 'mofcomp.exe'
    selection_case:
        - ParentImage|endswith:
              - '\cmd.exe'
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\wsl.exe'
              - '\wscript.exe'
              - '\cscript.exe'
        - CommandLine|contains:
              - '\AppData\Local\Temp'
              - '\Users\Public\'
              - '\WINDOWS\Temp\'
              - '%temp%'
              - '%tmp%'
              - '%appdata%'
    filter_main_wmiprvse:
        ParentImage: 'C:\Windows\System32\wbem\WmiPrvSE.exe'
        CommandLine|contains: 'C:\Windows\TEMP\'
        CommandLine|endswith: '.mof'
    filter_optional_null_parent:
        # Sometimes the parent information isn't available from the Microsoft-Windows-Security-Auditing provider.
        CommandLine|contains: 'C:\Windows\TEMP\'
        CommandLine|endswith: '.mof'
    condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: high

title: File Download Via Windows Defender MpCmpRun.EXE
id: 46123129-1024-423e-9fae-43af4a0fa9a5
status: test
description: Detects the use of Windows Defender MpCmdRun.EXE to download files
references:
    - https://web.archive.org/web/20200903194959/https://twitter.com/djmtshepana/status/1301608169496612866
    - https://lolbas-project.github.io/lolbas/Binaries/MpCmdRun/
author: Matthew Matchen
date: 2020-09-04
modified: 2023-11-09
tags:
    - attack.stealth
    - attack.t1218
    - attack.command-and-control
    - attack.t1105
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'MpCmdRun.exe'
        - Image|endswith: '\MpCmdRun.exe'
        - CommandLine|contains: 'MpCmdRun.exe'
        - Description: 'Microsoft Malware Protection Command Line Utility'
    selection_cli:
        CommandLine|contains|all:
            - 'DownloadFile'
            - 'url'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

title: Sensitive File Dump Via Print.EXE
id: 2fcda7e2-8c57-4904-86ac-37fc3157e09d
status: test
description: |
    Detects the abuse of the Print.exe utility for credential harvesting which involves using Print.Exe to copy sensitive files such as ntds.dit, SAM, SECURITY, or SYSTEM from the Windows directory in order to extract credentials, locally or remotely.
references:
    - https://www.microsoft.com/en-us/security/blog/2026/02/06/active-exploitation-solarwinds-web-help-desk/
    - https://www.huntress.com/blog/credential-theft-expanding-your-reach-pt-2
    - https://lolbas-project.github.io/lolbas/Binaries/Print/
author: Ayush Anand (Securityinbits)
date: 2026-04-28
tags:
    - attack.credential-access
    - attack.stealth
    - attack.t1003.003
    - attack.t1003.002
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\print.exe'
        - OriginalFileName: 'Print.EXE'
    selection_cli:
        CommandLine|contains|windash: '/D'
        CommandLine|contains:
            - '\config\SAM'
            - '\config\SECURITY'
            - '\config\SYSTEM'
            - '\windows\ntds\ntds.dit'
    condition: all of selection_*
falsepositives:
    - Unlikely
level: high
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_print_dump_sensitive_files/info.yml

title: Potential Provisioning Registry Key Abuse For Binary Proxy Execution
id: 2a4b3e61-9d22-4e4a-b60f-6e8f0cde6f25
related:
    - id: 7f5d1c9a-3e83-48df-95a7-2b98aae6c13c # CLI Generic
      type: similar
    - id: f9999590-1f94-4a34-a91e-951e47bedefd # CLI Abuse
      type: similar
    - id: 7021255e-5db3-4946-a8b9-0ba7a4644a69 # Registry
      type: similar
status: test
description: Detects potential abuse of the provisioning registry key for indirect command execution through "Provlaunch.exe".
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Provlaunch/
    - https://twitter.com/0gtweet/status/1674399582162153472
author: Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel
date: 2023-08-08
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: 'SOFTWARE\Microsoft\Provisioning\Commands\'
    condition: selection
falsepositives:
    - Unknown
level: high

title: RemoteFXvGPUDisablement Abuse Via AtomicTestHarnesses
id: a6fc3c46-23b8-4996-9ea2-573f4c4d88c5
related:
    - id: f65e22f9-819e-4f96-9c7b-498364ae7a25 # PS Classic
      type: similar
    - id: 38a7625e-b2cb-485d-b83d-aff137d859f4 # PS Module
      type: similar
    - id: cacef8fc-9d3d-41f7-956d-455c6e881bc5 # PS ScriptBlock
      type: similar
status: test
description: Detects calls to the AtomicTestHarnesses "Invoke-ATHRemoteFXvGPUDisablementCommand" which is designed to abuse the "RemoteFXvGPUDisablement.exe" binary to run custom PowerShell code via module load-order hijacking.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://github.com/redcanaryco/AtomicTestHarnesses/blob/7e1e4da116801e3d6fcc6bedb207064577e40572/TestHarnesses/T1218_SignedBinaryProxyExecution/InvokeRemoteFXvGPUDisablementCommand.ps1
author: frack113
date: 2021-07-13
modified: 2023-05-09
tags:
    - attack.stealth
    - attack.t1218
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        CommandLine|contains:
            - 'Invoke-ATHRemoteFXvGPUDisablementCommand'
            - 'Invoke-ATHRemoteFXvGPUDisableme'
    condition: selection
falsepositives:
    - Unknown
level: high