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Sigma (generic) detection rules

3,750 rules indexed · SIEM-agnostic detection content
Sigma is the open generic signature format for SIEM systems. Expand any rule to see its raw YAML and convert it inline to native query syntax. Pick a platform above to browse every rule already rendered in that language.
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Detection rules

50 shown of 3,750
high
Interactive AT Job
Detects an interactive AT job, which may be used as a form of privilege escalation.
status test author E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community id 60fc936d-2eb0-4543-8a13-911c750a1dfc
view Sigma YAML 
title: Interactive AT Job
id: 60fc936d-2eb0-4543-8a13-911c750a1dfc
status: test
description: Detects an interactive AT job, which may be used as a form of privilege escalation.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1053.002/T1053.002.md
    - https://eqllib.readthedocs.io/en/latest/analytics/d8db43cf-ed52-4f5c-9fb3-c9a4b95a0b56.html
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2019-10-24
modified: 2021-11-27
tags:
    - attack.persistence
    - attack.execution
    - attack.privilege-escalation
    - attack.t1053.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\at.exe'
        CommandLine|contains: 'interactive'
    condition: selection
falsepositives:
    - Unlikely (at.exe deprecated as of Windows 8)
level: high
simulation:
    - type: atomic-red-team
      name: At.exe Scheduled task
      technique: T1053.002
      atomic_guid: 4a6c0dc4-0f2a-4203-9298-a5a9bdc21ed8
Convert to SIEM query
high
Invalid PIM License
Identifies when an organization doesn't have the proper license for PIM and is out of compliance.
status test author Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' id 58af08eb-f9e1-43c8-9805-3ad9b0482bd8
view Sigma YAML 
title: Invalid PIM License
id: 58af08eb-f9e1-43c8-9805-3ad9b0482bd8
status: test
description: Identifies when an organization doesn't have the proper license for PIM and is out of compliance.
references:
    - https://learn.microsoft.com/en-us/entra/id-governance/privileged-identity-management/pim-how-to-configure-security-alerts#the-organization-doesnt-have-microsoft-entra-premium-p2-or-microsoft-entra-id-governance
author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo'
date: 2023-09-14
tags:
    - attack.initial-access
    - attack.stealth
    - attack.t1078
    - attack.persistence
    - attack.privilege-escalation
logsource:
    product: azure
    service: pim
detection:
    selection:
        riskEventType: 'invalidLicenseAlertIncident'
    condition: selection
falsepositives:
    - Investigate if licenses have expired.
level: high
Convert to SIEM query
high
Invoke-Obfuscation CLIP+ Launcher
Detects Obfuscated use of Clip.exe to execute PowerShell
status test author Jonathan Cheong, oscd.community id b222df08-0e07-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation CLIP+ Launcher
id: b222df08-0e07-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of Clip.exe to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 26)
author: Jonathan Cheong, oscd.community
date: 2020-10-13
modified: 2022-11-17
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        # CommandLine|re: 'cmd.{0,5}(?:\/c|\/r).+clip(?:\.exe)?.{0,4}&&.+clipboard]::\(\s\\\"\{\d\}.+\-f.+\"'
        # Example 1: Cmd /c" echo/Invoke-Expression (New-Object Net.WebClient).DownloadString |cLiP&& POWerSheLl -Nolog -sT . (\"{1}{2}{0}\"-f'pe','Ad',(\"{1}{0}\" -f'Ty','d-' ) ) -Assemb ( \"{5}{1}{3}{0}{2}{4}\" -f'ows','y','.F',(\"{0}{1}{2}\" -f'stem.W','i','nd'),( \"{0}{1}\"-f 'o','rms' ),'S' ) ; ([SySTEM.wiNDows.FoRmS.CLiPbOArd]::( \"{1}{0}\" -f (\"{1}{0}\" -f'T','TTeX' ),'gE' ).\"invO`Ke\"( ) ) ^| ^&( \"{5}{1}{2}{4}{3}{0}\" -f 'n',( \"{1}{0}\"-f'KE-','o' ),(\"{2}{1}{0}\"-f 'pRESS','x','e' ),'o','i','iNV') ; [System.Windows.Forms.Clipboard]::(\"{0}{1}\" -f( \"{1}{0}\"-f'e','SetT' ),'xt').\"InV`oKe\"( ' ')"
        # Example 2: CMD/c " ECho Invoke-Expression (New-Object Net.WebClient).DownloadString|c:\WiNDowS\SySteM32\cLip && powershElL -noPRO -sTa ^& (\"{2}{0}{1}\" -f 'dd',(\"{1}{0}\"-f 'ype','-T' ),'A' ) -AssemblyN (\"{0}{3}{2}{1}{4}\"-f'Pr','nCo',(\"{0}{1}\"-f'e','ntatio'),'es','re' ) ; ^& ( ( [StRinG]${ve`RB`OSE`pr`e`FeReNCE} )[1,3] + 'x'-JoiN'') ( ( [sySTem.WInDOWs.ClipbOaRD]::( \"{1}{0}\" -f(\"{0}{1}\" -f'tTe','xt' ),'ge' ).\"IN`Vo`Ke\"( ) ) ) ; [System.Windows.Clipboard]::( \"{2}{1}{0}\" -f't',( \"{0}{1}\" -f 'tT','ex' ),'Se' ).\"In`V`oKe\"( ' ' )"
        CommandLine|contains|all:
            - 'cmd'
            - '&&'
            - 'clipboard]::'
            - '-f'
        CommandLine|contains:
            - '/c'
            - '/r'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation CLIP+ Launcher - PowerShell
Detects Obfuscated use of Clip.exe to execute PowerShell
status test author Jonathan Cheong, oscd.community id 73e67340-0d25-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation CLIP+ Launcher - PowerShell
id: 73e67340-0d25-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of Clip.exe to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 26)
author: Jonathan Cheong, oscd.community
date: 2020-10-13
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: 'cmd.{0,5}(?:/c|/r).+clip(?:\.exe)?.{0,4}&&.+clipboard]::\(\s\\"\{\d\}.+-f.+"'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation CLIP+ Launcher - PowerShell Module
Detects Obfuscated use of Clip.exe to execute PowerShell
status test author Jonathan Cheong, oscd.community id a136cde0-61ad-4a61-9b82-8dc490e60dd2
view Sigma YAML 
title: Invoke-Obfuscation CLIP+ Launcher - PowerShell Module
id: a136cde0-61ad-4a61-9b82-8dc490e60dd2
related:
    - id: 73e67340-0d25-11eb-adc1-0242ac120002
      type: derived
status: test
description: Detects Obfuscated use of Clip.exe to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 26)
author: Jonathan Cheong, oscd.community
date: 2020-10-13
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: 'cmd.{0,5}(?:/c|/r).+clip(?:\.exe)?.{0,4}&&.+clipboard]::\(\s\\"\{\d\}.+-f.+"'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation CLIP+ Launcher - Security
Detects Obfuscated use of Clip.exe to execute PowerShell
status test author Jonathan Cheong, oscd.community id 4edf51e1-cb83-4e1a-bc39-800e396068e3
view Sigma YAML 
title: Invoke-Obfuscation CLIP+ Launcher - Security
id: 4edf51e1-cb83-4e1a-bc39-800e396068e3
related:
    - id: f7385ee2-0e0c-11eb-adc1-0242ac120002
      type: derived
status: test
description: Detects Obfuscated use of Clip.exe to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 26)
author: Jonathan Cheong, oscd.community
date: 2020-10-13
modified: 2022-11-27
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - 'cmd'
            - '&&'
            - 'clipboard]::'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation CLIP+ Launcher - System
Detects Obfuscated use of Clip.exe to execute PowerShell
status test author Jonathan Cheong, oscd.community id f7385ee2-0e0c-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation CLIP+ Launcher - System
id: f7385ee2-0e0c-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of Clip.exe to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 26)
author: Jonathan Cheong, oscd.community
date: 2020-10-13
modified: 2023-02-20
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains|all:
            - 'cmd'
            - '&&'
            - 'clipboard]::'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Obfuscated IEX Invocation
Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block
status test author Daniel Bohannon (@Mandiant/@FireEye), oscd.community id 4bf943c6-5146-4273-98dd-e958fd1e3abf
view Sigma YAML 
title: Invoke-Obfuscation Obfuscated IEX Invocation
id: 4bf943c6-5146-4273-98dd-e958fd1e3abf
status: test
description: Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block
references:
    - https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888
author: 'Daniel Bohannon (@Mandiant/@FireEye), oscd.community'
date: 2019-11-08
modified: 2026-03-16
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - CommandLine|re: '\$PSHome\[\s*\d{1,3}\s*\]\s*\+\s*\$PSHome\['
        - CommandLine|re: '\$ShellId\[\s*\d{1,3}\s*\]\s*\+\s*\$ShellId\['
        - CommandLine|re: '\$env:Public\[\s*\d{1,3}\s*\]\s*\+\s*\$env:Public\['
        - CommandLine|re: '\$env:ComSpec\[(?:\s*\d{1,3}\s*,){2}'
        - CommandLine|re: '\*mdr\*\W\s*\)\.Name'
        - CommandLine|re: '\$VerbosePreference\.ToString\('
        - CommandLine|re: '\[String\]\s*\$VerbosePreference'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell
Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block \u2014
status test author Daniel Bohannon (@Mandiant/@FireEye), oscd.community id 1b9dc62e-6e9e-42a3-8990-94d7a10007f7
view Sigma YAML 
title: Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell
id: 1b9dc62e-6e9e-42a3-8990-94d7a10007f7
status: test
description: Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the following code block \u2014
references:
    - https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888
author: 'Daniel Bohannon (@Mandiant/@FireEye), oscd.community'
date: 2019-11-08
modified: 2022-12-31
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_iex:
        - ScriptBlockText|re: '\$PSHome\[\s*\d{1,3}\s*\]\s*\+\s*\$PSHome\['
        - ScriptBlockText|re: '\$ShellId\[\s*\d{1,3}\s*\]\s*\+\s*\$ShellId\['
        - ScriptBlockText|re: '\$env:Public\[\s*\d{1,3}\s*\]\s*\+\s*\$env:Public\['
        - ScriptBlockText|re: '\$env:ComSpec\[(\s*\d{1,3}\s*,){2}'
        - ScriptBlockText|re: '\*mdr\*\W\s*\)\.Name'
        - ScriptBlockText|re: '\$VerbosePreference\.ToString\('
    condition: selection_iex
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell Module
Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block cited in the reference section below
status test author Daniel Bohannon (@Mandiant/@FireEye), oscd.community id 2f211361-7dce-442d-b78a-c04039677378
view Sigma YAML 
title: Invoke-Obfuscation Obfuscated IEX Invocation - PowerShell Module
id: 2f211361-7dce-442d-b78a-c04039677378
related:
    - id: 1b9dc62e-6e9e-42a3-8990-94d7a10007f7
      type: derived
status: test
description: Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block cited in the reference section below
references:
    - https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888
author: Daniel Bohannon (@Mandiant/@FireEye), oscd.community
date: 2019-11-08
modified: 2022-12-31
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_payload:
        - Payload|re: '\$PSHome\[\s*\d{1,3}\s*\]\s*\+\s*\$PSHome\['
        - Payload|re: '\$ShellId\[\s*\d{1,3}\s*\]\s*\+\s*\$ShellId\['
        - Payload|re: '\$env:Public\[\s*\d{1,3}\s*\]\s*\+\s*\$env:Public\['
        - Payload|re: '\$env:ComSpec\[(\s*\d{1,3}\s*,){2}'
        - Payload|re: '\*mdr\*\W\s*\)\.Name'
        - Payload|re: '\$VerbosePreference\.ToString\('
        - Payload|re: '\[String\]\s*\$VerbosePreference'
    condition: selection_payload
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Obfuscated IEX Invocation - Security
Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references
status test author Daniel Bohannon (@Mandiant/@FireEye), oscd.community id fd0f5778-d3cb-4c9a-9695-66759d04702a
view Sigma YAML 
title: Invoke-Obfuscation Obfuscated IEX Invocation - Security
id: fd0f5778-d3cb-4c9a-9695-66759d04702a
related:
    - id: 51aa9387-1c53-4153-91cc-d73c59ae1ca9
      type: derived
status: test
description: Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references
references:
    - https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888
author: Daniel Bohannon (@Mandiant/@FireEye), oscd.community
date: 2019-11-08
modified: 2022-11-27
tags:
    - attack.stealth
    - attack.t1027
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection_eid:
        EventID: 4697
    selection_servicefilename:
        - ServiceFileName|re: '\$PSHome\[\s*\d{1,3}\s*\]\s*\+\s*\$PSHome\['
        - ServiceFileName|re: '\$ShellId\[\s*\d{1,3}\s*\]\s*\+\s*\$ShellId\['
        - ServiceFileName|re: '\$env:Public\[\s*\d{1,3}\s*\]\s*\+\s*\$env:Public\['
        - ServiceFileName|re: '\$env:ComSpec\[(\s*\d{1,3}\s*,){2}'
        - ServiceFileName|re: '\\*mdr\*\W\s*\)\.Name'
        - ServiceFileName|re: '\$VerbosePreference\.ToString\('
        - ServiceFileName|re: '\String\]\s*\$VerbosePreference'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Obfuscated IEX Invocation - System
Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references
status test author Daniel Bohannon (@Mandiant/@FireEye), oscd.community id 51aa9387-1c53-4153-91cc-d73c59ae1ca9
view Sigma YAML 
title: Invoke-Obfuscation Obfuscated IEX Invocation - System
id: 51aa9387-1c53-4153-91cc-d73c59ae1ca9
status: test
description: Detects all variations of obfuscated powershell IEX invocation code generated by Invoke-Obfuscation framework from the code block linked in the references
references:
    - https://github.com/danielbohannon/Invoke-Obfuscation/blob/f20e7f843edd0a3a7716736e9eddfa423395dd26/Out-ObfuscatedStringCommand.ps1#L873-L888
author: Daniel Bohannon (@Mandiant/@FireEye), oscd.community
date: 2019-11-08
modified: 2022-11-27
tags:
    - attack.stealth
    - attack.t1027
logsource:
    product: windows
    service: system
detection:
    selection_eid:
        EventID: 7045
    selection_imagepath:
        - ImagePath|re: '\$PSHome\[\s*\d{1,3}\s*\]\s*\+\s*\$PSHome\['
        - ImagePath|re: '\$ShellId\[\s*\d{1,3}\s*\]\s*\+\s*\$ShellId\['
        - ImagePath|re: '\$env:Public\[\s*\d{1,3}\s*\]\s*\+\s*\$env:Public\['
        - ImagePath|re: '\$env:ComSpec\[(\s*\d{1,3}\s*,){2}'
        - ImagePath|re: '\\*mdr\*\W\s*\)\.Name'
        - ImagePath|re: '\$VerbosePreference\.ToString\('
        - ImagePath|re: '\String\]\s*\$VerbosePreference'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation STDIN+ Launcher
Detects Obfuscated use of stdin to execute PowerShell
status test author Jonathan Cheong, oscd.community id 6c96fc76-0eb1-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation STDIN+ Launcher
id: 6c96fc76-0eb1-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of stdin to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-15
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        # Example 1: c:\windows\sYstEm32\CmD.eXE /C"echO\Invoke-Expression (New-Object Net.WebClient).DownloadString | POwersHELl -NoEXiT -"
        # Example 2: c:\WiNDOws\sysTEm32\cmd.EXe /C " ECHo Invoke-Expression (New-Object Net.WebClient).DownloadString | POwersHELl -nol ${EXEcUtIONCONTeXT}.INvOkEComMANd.InvOKEScRIPt( $InpUt )"
        CommandLine|re: 'cmd.{0,5}(?:/c|/r).+powershell.+(?:\$\{?input\}?|noexit).+\"'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation STDIN+ Launcher - PowerShell Module
Detects Obfuscated use of stdin to execute PowerShell
status test author Jonathan Cheong, oscd.community id 9ac8b09b-45de-4a07-9da1-0de8c09304a3
view Sigma YAML 
title: Invoke-Obfuscation STDIN+ Launcher - PowerShell Module
id: 9ac8b09b-45de-4a07-9da1-0de8c09304a3
related:
    - id: 779c8c12-0eb1-11eb-adc1-0242ac120002
      type: derived
status: test
description: Detects Obfuscated use of stdin to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: 'cmd.{0,5}(?:/c|/r).+powershell.+(?:\$\{?input\}?|noexit).+"'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation STDIN+ Launcher - Powershell
Detects Obfuscated use of stdin to execute PowerShell
status test author Jonathan Cheong, oscd.community id 779c8c12-0eb1-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation STDIN+ Launcher - Powershell
id: 779c8c12-0eb1-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of stdin to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: 'cmd.{0,5}(?:/c|/r).+powershell.+(?:\$?\{?input\}?|noexit).+"'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation STDIN+ Launcher - Security
Detects Obfuscated use of stdin to execute PowerShell
status test author Jonathan Cheong, oscd.community id 0c718a5e-4284-4fb9-b4d9-b9a50b3a1974
view Sigma YAML 
title: Invoke-Obfuscation STDIN+ Launcher - Security
id: 0c718a5e-4284-4fb9-b4d9-b9a50b3a1974
related:
    - id: 72862bf2-0eb1-11eb-adc1-0242ac120002
      type: derived
status: test
description: Detects Obfuscated use of stdin to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - 'cmd'
            - 'powershell'
    selection2:
        ServiceFileName|contains:
            - '${input}'
            - 'noexit'
    selection3:
        ServiceFileName|contains:
            - ' /c '
            - ' /r '
    condition: all of selection*
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation STDIN+ Launcher - System
Detects Obfuscated use of stdin to execute PowerShell
status test author Jonathan Cheong, oscd.community id 72862bf2-0eb1-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation STDIN+ Launcher - System
id: 72862bf2-0eb1-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of stdin to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 25)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection_main:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        # ImagePath|re: 'cmd.{0,5}(?:\/c|\/r).+powershell.+(?:\$\{?input\}?|noexit).+\"'
        # Example 1: c:\windows\sYstEm32\CmD.eXE /C"echO\Invoke-Expression (New-Object Net.WebClient).DownloadString | POwersHELl -NoEXiT -"
        # Example 2: c:\WiNDOws\sysTEm32\cmd.EXe /C " ECHo Invoke-Expression (New-Object Net.WebClient).DownloadString | POwersHELl -nol ${EXEcUtIONCONTeXT}.INvOkEComMANd.InvOKEScRIPt( $InpUt )"
        ImagePath|contains|all:
            - 'cmd'
            - 'powershell'
        ImagePath|contains:
            - '/c'
            - '/r'
    selection_other:
        - ImagePath|contains: 'noexit'
        - ImagePath|contains|all:
              - 'input'
              - '$'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR+ Launcher
Detects Obfuscated use of Environment Variables to execute PowerShell
status test author Jonathan Cheong, oscd.community id 27aec9c9-dbb0-4939-8422-1742242471d0
view Sigma YAML 
title: Invoke-Obfuscation VAR+ Launcher
id: 27aec9c9-dbb0-4939-8422-1742242471d0
status: test
description: Detects Obfuscated use of Environment Variables to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 24)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-15
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        # Example 1: C:\winDoWs\SySTeM32\cmd.Exe /C"SET NOtI=Invoke-Expression (New-Object Net.WebClient).DownloadString&& PowERshElL -NOl SET-iteM ( 'VAR' + 'i'+ 'A' + 'blE:Ao6' + 'I0') ( [TYpe](\"{2}{3}{0}{1}\"-F 'iRoN','mENT','e','nv') ) ; ${exECUtIONCOnTEXT}.\"IN`VO`KecOmMaND\".\"inVo`KES`crIPt\"( ( ( GEt-VAriAble ( 'a' + 'o6I0') -vaLU )::(\"{1}{4}{2}{3}{0}\" -f'e','gETenvIR','NtvaRIa','BL','ONme' ).Invoke(( \"{0}{1}\"-f'n','oti' ),( \"{0}{1}\" -f'pRoC','esS') )) )"
        # Example 2: cMD.exe /C "seT SlDb=Invoke-Expression (New-Object Net.WebClient).DownloadString&& pOWErShell .(( ^&(\"{1}{0}{2}{3}\" -f 'eT-vaR','G','iab','lE' ) (\"{0}{1}\" -f '*m','DR*' ) ).\"na`ME\"[3,11,2]-JOIN'' ) ( ( ^&(\"{0}{1}\" -f'g','CI' ) (\"{0}{1}\" -f 'ENV',':SlDb' ) ).\"VA`luE\" ) "
        CommandLine|re: 'cmd.{0,5}(?:/c|/r)(?:\s|)\"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\\"\s+?\-f(?:.*\)){1,}.*\"'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR+ Launcher - PowerShell
Detects Obfuscated use of Environment Variables to execute PowerShell
status test author Jonathan Cheong, oscd.community id 0adfbc14-0ed1-11eb-adc1-0242ac120002
view Sigma YAML 
title: Invoke-Obfuscation VAR+ Launcher - PowerShell
id: 0adfbc14-0ed1-11eb-adc1-0242ac120002
status: test
description: Detects Obfuscated use of Environment Variables to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 24)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: 'cmd.{0,5}(?:/c|/r)(?:\s|)"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\"\s+?-f(?:.*\)){1,}.*"'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR+ Launcher - PowerShell Module
Detects Obfuscated use of Environment Variables to execute PowerShell
status test author Jonathan Cheong, oscd.community id 6bfb8fa7-b2e7-4f6c-8d9d-824e5d06ea9e
view Sigma YAML 
title: Invoke-Obfuscation VAR+ Launcher - PowerShell Module
id: 6bfb8fa7-b2e7-4f6c-8d9d-824e5d06ea9e
related:
    - id: 0adfbc14-0ed1-11eb-adc1-0242ac120002
      type: derived
status: test
description: Detects Obfuscated use of Environment Variables to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 24)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: 'cmd.{0,5}(?:/c|/r)(?:\s|)"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\"\s+?-f(?:.*\)){1,}.*"'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR+ Launcher - Security
Detects Obfuscated use of Environment Variables to execute PowerShell
status test author Jonathan Cheong, oscd.community id dcf2db1f-f091-425b-a821-c05875b8925a
view Sigma YAML 
title: Invoke-Obfuscation VAR+ Launcher - Security
id: dcf2db1f-f091-425b-a821-c05875b8925a
related:
    - id: 8ca7004b-e620-4ecb-870e-86129b5b8e75
      type: derived
status: test
description: Detects Obfuscated use of Environment Variables to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 24)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        # ServiceFileName|re: 'cmd.{0,5}(?:\/c|\/r)(?:\s|)\"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\\"\s+?\-f(?:.*\)){1,}.*\"'
        # Example 1: C:\winDoWs\SySTeM32\cmd.Exe /C"SET NOtI=Invoke-Expression (New-Object Net.WebClient).DownloadString&& PowERshElL -NOl SET-iteM ( 'VAR' + 'i'+ 'A' + 'blE:Ao6' + 'I0') ( [TYpe](\"{2}{3}{0}{1}\"-F 'iRoN','mENT','e','nv') ) ; ${exECUtIONCOnTEXT}.\"IN`VO`KecOmMaND\".\"inVo`KES`crIPt\"( ( ( GEt-VAriAble ( 'a' + 'o6I0') -vaLU )::(\"{1}{4}{2}{3}{0}\" -f'e','gETenvIR','NtvaRIa','BL','ONme' ).Invoke(( \"{0}{1}\"-f'n','oti' ),( \"{0}{1}\" -f'pRoC','esS') )) )"
        # Example 2: cMD.exe /C "seT SlDb=Invoke-Expression (New-Object Net.WebClient).DownloadString&& pOWErShell .(( ^&(\"{1}{0}{2}{3}\" -f 'eT-vaR','G','iab','lE' ) (\"{0}{1}\" -f '*m','DR*' ) ).\"na`ME\"[3,11,2]-JOIN'' ) ( ( ^&(\"{0}{1}\" -f'g','CI' ) (\"{0}{1}\" -f 'ENV',':SlDb' ) ).\"VA`luE\" ) "
        ServiceFileName|contains|all:
            - 'cmd'
            - '"set'
            - '-f'
        ServiceFileName|contains:
            - '/c'
            - '/r'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR+ Launcher - System
Detects Obfuscated use of Environment Variables to execute PowerShell
status test author Jonathan Cheong, oscd.community id 8ca7004b-e620-4ecb-870e-86129b5b8e75
view Sigma YAML 
title: Invoke-Obfuscation VAR+ Launcher - System
id: 8ca7004b-e620-4ecb-870e-86129b5b8e75
status: test
description: Detects Obfuscated use of Environment Variables to execute PowerShell
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task 24)
author: Jonathan Cheong, oscd.community
date: 2020-10-15
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        # ImagePath|re: 'cmd.{0,5}(?:\/c|\/r)(?:\s|)\"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\\"\s+?\-f(?:.*\)){1,}.*\"'
        # Example 1: C:\winDoWs\SySTeM32\cmd.Exe /C"SET NOtI=Invoke-Expression (New-Object Net.WebClient).DownloadString&& PowERshElL -NOl SET-iteM ( 'VAR' + 'i'+ 'A' + 'blE:Ao6' + 'I0') ( [TYpe](\"{2}{3}{0}{1}\"-F 'iRoN','mENT','e','nv') ) ; ${exECUtIONCOnTEXT}.\"IN`VO`KecOmMaND\".\"inVo`KES`crIPt\"( ( ( GEt-VAriAble ( 'a' + 'o6I0') -vaLU )::(\"{1}{4}{2}{3}{0}\" -f'e','gETenvIR','NtvaRIa','BL','ONme' ).Invoke(( \"{0}{1}\"-f'n','oti' ),( \"{0}{1}\" -f'pRoC','esS') )) )"
        # Example 2: cMD.exe /C "seT SlDb=Invoke-Expression (New-Object Net.WebClient).DownloadString&& pOWErShell .(( ^&(\"{1}{0}{2}{3}\" -f 'eT-vaR','G','iab','lE' ) (\"{0}{1}\" -f '*m','DR*' ) ).\"na`ME\"[3,11,2]-JOIN'' ) ( ( ^&(\"{0}{1}\" -f'g','CI' ) (\"{0}{1}\" -f 'ENV',':SlDb' ) ).\"VA`luE\" ) "
        ImagePath|contains|all:
            - 'cmd'
            - '"set'
            - '-f'
        ImagePath|contains:
            - '/c'
            - '/r'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION
Detects Obfuscated Powershell via VAR++ LAUNCHER
status test author Timur Zinniatullin, oscd.community id e9f55347-2928-4c06-88e5-1a7f8169942e
view Sigma YAML 
title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION
id: e9f55347-2928-4c06-88e5-1a7f8169942e
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2022-11-16
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        # CommandLine|re: '(?i)&&set.*(\{\d\}){2,}\\\"\s+?\-f.*&&.*cmd.*\/c' # FPs with |\/r
        # Example 1: CMD /C"sET KUR=Invoke-Expression (New-Object Net.WebClient).DownloadString&&Set MxI=C:\wINDowS\sYsWow64\winDOWspoWERSheLl\V1.0\PowerShelL.EXe ${ExEcut`IoN`cON`TExT}.\"invo`kEcoMm`A`ND\".( \"{2}{1}{0}\" -f 'pt','EscRi','INvOk' ).Invoke( ( .( \"{0}{1}\" -f'D','IR' ) ( \"{0}{1}\"-f'ENV:kU','R')).\"vAl`Ue\" )&& CMD /C%mXI%"
        # Example 2: c:\WiNDOWS\sYSTEm32\CmD.exE /C "sEt DeJLz=Invoke-Expression (New-Object Net.WebClient).DownloadString&&set yBKM=PoWERShelL -noeX ^^^&(\"{2}{0}{1}\"-f '-ItE','m','seT') ( 'V' + 'a'+ 'RiAblE:z8J' +'U2' + 'l' ) ([TYpE]( \"{2}{3}{0}{1}\"-f 'e','NT','e','NViRONM' ) ) ; ^^^& ( ( [sTrIng]${VE`Rbo`SepReFER`Ence})[1,3] + 'X'-joIN'')( ( (.('gI') ('V' + 'a' + 'RIAbLe:z8j' + 'u2' +'l' ) ).vALUe::( \"{2}{5}{0}{1}{6}{4}{3}\" -f 'IRo','Nm','GETE','ABlE','I','nv','enTVAr').Invoke(( \"{0}{1}\"-f'd','ejLz' ),( \"{1}{2}{0}\"-f'cEss','P','RO') )) )&& c:\WiNDOWS\sYSTEm32\CmD.exE /C %ybkm%"
        CommandLine|contains|all:
            - '&&set'
            - 'cmd'
            - '/c'
            - '-f'
        CommandLine|contains:
            - '{0}'
            - '{1}'
            - '{2}'
            - '{3}'
            - '{4}'
            - '{5}'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell
Detects Obfuscated Powershell via VAR++ LAUNCHER
status test author Timur Zinniatullin, oscd.community id e54f5149-6ba3-49cf-b153-070d24679126
view Sigma YAML 
title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell
id: e54f5149-6ba3-49cf-b153-070d24679126
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: '(?i)&&set.*(\{\d\}){2,}\\"\s+?-f.*&&.*cmd.*/c' # FPs with |\/r
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell Module
Detects Obfuscated Powershell via VAR++ LAUNCHER
status test author Timur Zinniatullin, oscd.community id f3c89218-8c3d-4ba9-9974-f1d8e6a1b4a6
view Sigma YAML 
title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell Module
id: f3c89218-8c3d-4ba9-9974-f1d8e6a1b4a6
related:
    - id: e54f5149-6ba3-49cf-b153-070d24679126
      type: derived
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: '(?i)&&set.*(\{\d\}){2,}\\"\s+?-f.*&&.*cmd.*/c' # FPs with |\/r
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - Security
Detects Obfuscated Powershell via VAR++ LAUNCHER
status test author Timur Zinniatullin, oscd.community id 4c54ba8f-73d2-4d40-8890-d9cf1dca3d30
view Sigma YAML 
title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - Security
id: 4c54ba8f-73d2-4d40-8890-d9cf1dca3d30
related:
    - id: 14bcba49-a428-42d9-b943-e2ce0f0f7ae6
      type: derived
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        # ServiceFileName|re: '(?i)&&set.*(\{\d\}){2,}\\\"\s+?\-f.*&&.*cmd.*\/c' # FPs with |\/r
        # Example 1: CMD /C"sET KUR=Invoke-Expression (New-Object Net.WebClient).DownloadString&&Set MxI=C:\wINDowS\sYsWow64\winDOWspoWERSheLl\V1.0\PowerShelL.EXe ${ExEcut`IoN`cON`TExT}.\"invo`kEcoMm`A`ND\".( \"{2}{1}{0}\" -f 'pt','EscRi','INvOk' ).Invoke( ( .( \"{0}{1}\" -f'D','IR' ) ( \"{0}{1}\"-f'ENV:kU','R')).\"vAl`Ue\" )&& CMD /C%mXI%"
        # Example 2: c:\WiNDOWS\sYSTEm32\CmD.exE /C "sEt DeJLz=Invoke-Expression (New-Object Net.WebClient).DownloadString&&set yBKM=PoWERShelL -noeX ^^^&(\"{2}{0}{1}\"-f '-ItE','m','seT') ( 'V' + 'a'+ 'RiAblE:z8J' +'U2' + 'l' ) ([TYpE]( \"{2}{3}{0}{1}\"-f 'e','NT','e','NViRONM' ) ) ; ^^^& ( ( [sTrIng]${VE`Rbo`SepReFER`Ence})[1,3] + 'X'-joIN'')( ( (.('gI') ('V' + 'a' + 'RIAbLe:z8j' + 'u2' +'l' ) ).vALUe::( \"{2}{5}{0}{1}{6}{4}{3}\" -f 'IRo','Nm','GETE','ABlE','I','nv','enTVAr').Invoke(( \"{0}{1}\"-f'd','ejLz' ),( \"{1}{2}{0}\"-f'cEss','P','RO') )) )&& c:\WiNDOWS\sYSTEm32\CmD.exE /C %ybkm%"
        ServiceFileName|contains|all:
            - '&&set'
            - 'cmd'
            - '/c'
            - '-f'
        ServiceFileName|contains:
            - '{0}'
            - '{1}'
            - '{2}'
            - '{3}'
            - '{4}'
            - '{5}'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - System
Detects Obfuscated Powershell via VAR++ LAUNCHER
status test author Timur Zinniatullin, oscd.community id 14bcba49-a428-42d9-b943-e2ce0f0f7ae6
view Sigma YAML 
title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - System
id: 14bcba49-a428-42d9-b943-e2ce0f0f7ae6
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        # ImagePath|re: '(?i)&&set.*(\{\d\}){2,}\\\"\s+?\-f.*&&.*cmd.*\/c' # FPs with |\/r
        # Example 1: CMD /C"sET KUR=Invoke-Expression (New-Object Net.WebClient).DownloadString&&Set MxI=C:\wINDowS\sYsWow64\winDOWspoWERSheLl\V1.0\PowerShelL.EXe ${ExEcut`IoN`cON`TExT}.\"invo`kEcoMm`A`ND\".( \"{2}{1}{0}\" -f 'pt','EscRi','INvOk' ).Invoke( ( .( \"{0}{1}\" -f'D','IR' ) ( \"{0}{1}\"-f'ENV:kU','R')).\"vAl`Ue\" )&& CMD /C%mXI%"
        # Example 2: c:\WiNDOWS\sYSTEm32\CmD.exE /C "sEt DeJLz=Invoke-Expression (New-Object Net.WebClient).DownloadString&&set yBKM=PoWERShelL -noeX ^^^&(\"{2}{0}{1}\"-f '-ItE','m','seT') ( 'V' + 'a'+ 'RiAblE:z8J' +'U2' + 'l' ) ([TYpE]( \"{2}{3}{0}{1}\"-f 'e','NT','e','NViRONM' ) ) ; ^^^& ( ( [sTrIng]${VE`Rbo`SepReFER`Ence})[1,3] + 'X'-joIN'')( ( (.('gI') ('V' + 'a' + 'RIAbLe:z8j' + 'u2' +'l' ) ).vALUe::( \"{2}{5}{0}{1}{6}{4}{3}\" -f 'IRo','Nm','GETE','ABlE','I','nv','enTVAr').Invoke(( \"{0}{1}\"-f'd','ejLz' ),( \"{1}{2}{0}\"-f'cEss','P','RO') )) )&& c:\WiNDOWS\sYSTEm32\CmD.exE /C %ybkm%"
        ImagePath|contains|all:
            - '&&set'
            - 'cmd'
            - '/c'
            - '-f'
        ImagePath|contains:
            - '{0}'
            - '{1}'
            - '{2}'
            - '{3}'
            - '{4}'
            - '{5}'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Stdin
Detects Obfuscated Powershell via Stdin in Scripts
status test author Nikita Nazarov, oscd.community id 9c14c9fa-1a63-4a64-8e57-d19280559490
view Sigma YAML 
title: Invoke-Obfuscation Via Stdin
id: 9c14c9fa-1a63-4a64-8e57-d19280559490
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2026-03-16
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|re: '(?i)(?:set).*&&\s?set.*(?:environment|invoke|\$\{?input).*&&.*"'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Stdin - PowerShell Module
Detects Obfuscated Powershell via Stdin in Scripts
status test author Nikita Nazarov, oscd.community id c72aca44-8d52-45ad-8f81-f96c4d3c755e
view Sigma YAML 
title: Invoke-Obfuscation Via Stdin - PowerShell Module
id: c72aca44-8d52-45ad-8f81-f96c4d3c755e
related:
    - id: 86b896ba-ffa1-4fea-83e3-ee28a4c915c7
      type: derived
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: '(?i)(set).*&&\s?set.*(environment|invoke|\$?\{?input).*&&.*"'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Stdin - Powershell
Detects Obfuscated Powershell via Stdin in Scripts
status test author Nikita Nazarov, oscd.community id 86b896ba-ffa1-4fea-83e3-ee28a4c915c7
view Sigma YAML 
title: Invoke-Obfuscation Via Stdin - Powershell
id: 86b896ba-ffa1-4fea-83e3-ee28a4c915c7
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: '(?i)(set).*&&\s?set.*(environment|invoke|\$\{?input).*&&.*"'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Stdin - Security
Detects Obfuscated Powershell via Stdin in Scripts
status test author Nikita Nazarov, oscd.community id 80b708f3-d034-40e4-a6c8-d23b7a7db3d1
view Sigma YAML 
title: Invoke-Obfuscation Via Stdin - Security
id: 80b708f3-d034-40e4-a6c8-d23b7a7db3d1
related:
    - id: 487c7524-f892-4054-b263-8a0ace63fc25
      type: derived
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - 'set'
            - '&&'
        ServiceFileName|contains:
            - 'environment'
            - 'invoke'
            - '${input)'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Stdin - System
Detects Obfuscated Powershell via Stdin in Scripts
status test author Nikita Nazarov, oscd.community id 487c7524-f892-4054-b263-8a0ace63fc25
view Sigma YAML 
title: Invoke-Obfuscation Via Stdin - System
id: 487c7524-f892-4054-b263-8a0ace63fc25
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        # ImagePath|re: '(?i)(set).*&&\s?set.*(environment|invoke|\${?input).*&&.*"'
        ImagePath|contains|all:
            - 'set'
            - '&&'
        ImagePath|contains:
            - 'environment'
            - 'invoke'
            - 'input'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Clip
Detects Obfuscated Powershell via use Clip.exe in Scripts
status test author Nikita Nazarov, oscd.community id e1561947-b4e3-4a74-9bdd-83baed21bdb5
view Sigma YAML 
title: Invoke-Obfuscation Via Use Clip
id: e1561947-b4e3-4a74-9bdd-83baed21bdb5
status: test
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task29)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2026-03-16
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        # Example 1: C:\WINdoWS\sySteM32\CMd /c " ECho\Invoke-Expression (New-Object Net.WebClient).DownloadString|Clip.Exe&&C:\WINdoWS\sySteM32\CMd /c pOWerSheLl -STa . ( \"{2}{0}{1}\"-f'dd-',(\"{0}{1}\" -f 'T','ype' ),'A' ) -Assembly ( \"{4}{1}{3}{0}{2}\"-f (\"{0}{1}\" -f 'nd','ow'),( \"{1}{0}\"-f'.W','stem' ),( \"{2}{1}{0}\" -f 'rms','Fo','s.'),'i','Sy') ; ${exeCUtIOnCONTeXT}.\"INV`oKECOM`m`ANd\".\"INV`ok`ESCriPT\"( ( [sYSteM.wiNDoWS.forMs.ClIPboaRD]::( \"{2}{0}{1}\" -f'Ex','t',(\"{0}{1}\" -f'Get','t' ) ).\"iNvo`Ke\"( )) ) ; [System.Windows.Forms.Clipboard]::(\"{1}{0}\" -f 'ar','Cle' ).\"in`V`oKE\"( )"
        # Example 2: C:\WINDowS\sYsTEM32\CmD.eXE /C" echo\Invoke-Expression (New-Object Net.WebClient).DownloadString| C:\WIndOWs\SYSteM32\CLip &&C:\WINDowS\sYsTEM32\CmD.eXE /C POWERSHeLL -sT -noL [Void][System.Reflection.Assembly]::( \"{0}{3}{4}{1}{2}\" -f( \"{0}{1}\"-f'Lo','adW' ),( \"{0}{1}\"-f 'Par','t'),( \"{0}{1}{2}\"-f 'ial','N','ame'),'it','h' ).\"in`VO`KE\"( ( \"{3}{1}{4}{5}{2}{0}\"-f'rms','ystem.Windo','Fo','S','w','s.' )) ; ( [wIndows.fOrms.cLIPBOArD]::( \"{1}{0}\"-f'T',( \"{1}{0}\" -f'tEX','gET' )).\"i`Nvoke\"( ) ) ^^^| ^^^& ( ( ^^^& ( \"{2}{1}{0}\"-f 'e',( \"{2}{1}{0}\"-f'IABl','aR','v' ),( \"{0}{1}\"-f'Get','-' ) ) ( \"{1}{0}\"-f'*','*MDr' )).\"n`Ame\"[3,11,2]-jOin'') ; [Windows.Forms.Clipboard]::( \"{0}{1}\" -f (\"{1}{0}\"-f'tT','Se' ),'ext').\"in`VoKe\"(' ' )"
        CommandLine|re: '(?i)echo.*clip.*&&.*(?:Clipboard|i`?n`?v`?o`?k`?e`?)'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Clip - PowerShell Module
Detects Obfuscated Powershell via use Clip.exe in Scripts
status test author Nikita Nazarov, oscd.community id ebdf49d8-b89c-46c9-8fdf-2c308406f6bd
view Sigma YAML 
title: Invoke-Obfuscation Via Use Clip - PowerShell Module
id: ebdf49d8-b89c-46c9-8fdf-2c308406f6bd
related:
    - id: db92dd33-a3ad-49cf-8c2c-608c3e30ace0
      type: derived
status: test
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task29)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2024-04-05
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|re: '(?i)echo.*clip.*&&.*(Clipboard|i`?n`?v`?o`?k`?e`?)'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Clip - Powershell
Detects Obfuscated Powershell via use Clip.exe in Scripts
status test author Nikita Nazarov, oscd.community id db92dd33-a3ad-49cf-8c2c-608c3e30ace0
view Sigma YAML 
title: Invoke-Obfuscation Via Use Clip - Powershell
id: db92dd33-a3ad-49cf-8c2c-608c3e30ace0
status: test
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009  # (Task29)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2024-04-15
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: '(?i)echo.*clip.*&&.*(Clipboard|i`?n`?v`?o`?k`?e`?)'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Clip - Security
Detects Obfuscated Powershell via use Clip.exe in Scripts
status test author Nikita Nazarov, oscd.community id 1a0a2ff1-611b-4dac-8216-8a7b47c618a6
view Sigma YAML 
title: Invoke-Obfuscation Via Use Clip - Security
id: 1a0a2ff1-611b-4dac-8216-8a7b47c618a6
related:
    - id: 63e3365d-4824-42d8-8b82-e56810fefa0c
      type: derived
status: test
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task29)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains: '(Clipboard|i'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Clip - System
Detects Obfuscated Powershell via use Clip.exe in Scripts
status test author Nikita Nazarov, oscd.community id 63e3365d-4824-42d8-8b82-e56810fefa0c
view Sigma YAML 
title: Invoke-Obfuscation Via Use Clip - System
id: 63e3365d-4824-42d8-8b82-e56810fefa0c
status: test
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task29)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains: '(Clipboard|i'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use MSHTA
Detects Obfuscated Powershell via use MSHTA in Scripts
status test author Nikita Nazarov, oscd.community id ac20ae82-8758-4f38-958e-b44a3140ca88
view Sigma YAML 
title: Invoke-Obfuscation Via Use MSHTA
id: ac20ae82-8758-4f38-958e-b44a3140ca88
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009   # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-08
modified: 2022-03-08
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'set'
            - '&&'
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - '(window.close)'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use MSHTA - PowerShell
Detects Obfuscated Powershell via use MSHTA in Scripts
status test author Nikita Nazarov, oscd.community id e55a5195-4724-480e-a77e-3ebe64bd3759
view Sigma YAML 
title: Invoke-Obfuscation Via Use MSHTA - PowerShell
id: e55a5195-4724-480e-a77e-3ebe64bd3759
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-08
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|contains|all:
            - 'set'
            - '&&'
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - '(window.close)'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use MSHTA - PowerShell Module
Detects Obfuscated Powershell via use MSHTA in Scripts
status test author Nikita Nazarov, oscd.community id 07ad2ea8-6a55-4ac6-bf3e-91b8e59676eb
view Sigma YAML 
title: Invoke-Obfuscation Via Use MSHTA - PowerShell Module
id: 07ad2ea8-6a55-4ac6-bf3e-91b8e59676eb
related:
    - id: e55a5195-4724-480e-a77e-3ebe64bd3759
      type: derived
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-08
modified: 2023-01-04
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection:
        Payload|contains|all:
            - 'set'
            - '&&'
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - '(window.close)'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use MSHTA - Security
Detects Obfuscated Powershell via use MSHTA in Scripts
status test author Nikita Nazarov, oscd.community id 9b8d9203-4e0f-4cd9-bb06-4cc4ea6d0e9a
view Sigma YAML 
title: Invoke-Obfuscation Via Use MSHTA - Security
id: 9b8d9203-4e0f-4cd9-bb06-4cc4ea6d0e9a
related:
    - id: 7e9c7999-0f9b-4d4a-a6ed-af6d553d4af4
      type: derived
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - 'mshta'
            - 'vbscript:createobject'
            - '.run'
            - 'window.close'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use MSHTA - System
Detects Obfuscated Powershell via use MSHTA in Scripts
status test author Nikita Nazarov, oscd.community id 7e9c7999-0f9b-4d4a-a6ed-af6d553d4af4
view Sigma YAML 
title: Invoke-Obfuscation Via Use MSHTA - System
id: 7e9c7999-0f9b-4d4a-a6ed-af6d553d4af4
status: test
description: Detects Obfuscated Powershell via use MSHTA in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task31)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains|all:
            - 'mshta'
            - 'vbscript:createobject'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Rundll32 - PowerShell
Detects Obfuscated Powershell via use Rundll32 in Scripts
status test author Nikita Nazarov, oscd.community id a5a30a6e-75ca-4233-8b8c-42e0f2037d3b
view Sigma YAML 
title: Invoke-Obfuscation Via Use Rundll32 - PowerShell
id: a5a30a6e-75ca-4233-8b8c-42e0f2037d3b
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009
author: Nikita Nazarov, oscd.community
date: 2019-10-08
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|contains|all:
            - '&&'
            - 'rundll32'
            - 'shell32.dll'
            - 'shellexec_rundll'
        ScriptBlockText|contains:
            - 'value'
            - 'invoke'
            - 'comspec'
            - 'iex'
    condition: selection_4104
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Rundll32 - PowerShell Module
Detects Obfuscated Powershell via use Rundll32 in Scripts
status test author Nikita Nazarov, oscd.community id 88a22f69-62f9-4b8a-aa00-6b0212f2f05a
view Sigma YAML 
title: Invoke-Obfuscation Via Use Rundll32 - PowerShell Module
id: 88a22f69-62f9-4b8a-aa00-6b0212f2f05a
related:
    - id: a5a30a6e-75ca-4233-8b8c-42e0f2037d3b
      type: derived
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009
author: Nikita Nazarov, oscd.community
date: 2019-10-08
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_module
    definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
    selection_4103:
        Payload|contains|all:
            - '&&'
            - 'rundll32'
            - 'shell32.dll'
            - 'shellexec_rundll'
        Payload|contains:
            - 'value'
            - 'invoke'
            - 'comspec'
            - 'iex'
    condition: selection_4103
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Rundll32 - Security
Detects Obfuscated Powershell via use Rundll32 in Scripts
status test author Nikita Nazarov, oscd.community id cd0f7229-d16f-42de-8fe3-fba365fbcb3a
view Sigma YAML 
title: Invoke-Obfuscation Via Use Rundll32 - Security
id: cd0f7229-d16f-42de-8fe3-fba365fbcb3a
related:
    - id: 641a4bfb-c017-44f7-800c-2aee0184ce9b
      type: derived
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task30)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: security
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        EventID: 4697
        ServiceFileName|contains|all:
            - '&&'
            - 'rundll32'
            - 'shell32.dll'
            - 'shellexec_rundll'
        ServiceFileName|contains:
            - value
            - invoke
            - comspec
            - iex
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Invoke-Obfuscation Via Use Rundll32 - System
Detects Obfuscated Powershell via use Rundll32 in Scripts
status test author Nikita Nazarov, oscd.community id 641a4bfb-c017-44f7-800c-2aee0184ce9b
view Sigma YAML 
title: Invoke-Obfuscation Via Use Rundll32 - System
id: 641a4bfb-c017-44f7-800c-2aee0184ce9b
status: test
description: Detects Obfuscated Powershell via use Rundll32 in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task30)
author: Nikita Nazarov, oscd.community
date: 2020-10-09
modified: 2022-11-29
tags:
    - attack.stealth
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains|all:
            - '&&'
            - 'rundll32'
            - 'shell32.dll'
            - 'shellexec_rundll'
        ImagePath|contains:
            - 'value'
            - 'invoke'
            - 'comspec'
            - 'iex'
    condition: selection
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
JNDIExploit Pattern
Detects exploitation attempt using the JNDI-Exploit-Kit
status test author Florian Roth (Nextron Systems) id 412d55bc-7737-4d25-9542-5b396867ce55
view Sigma YAML 
title: JNDIExploit Pattern
id: 412d55bc-7737-4d25-9542-5b396867ce55
status: test
description: Detects exploitation attempt using the JNDI-Exploit-Kit
references:
    - https://github.com/pimps/JNDI-Exploit-Kit
    - https://web.archive.org/web/20231015205935/https://githubmemory.com/repo/FunctFan/JNDIExploit
author: Florian Roth (Nextron Systems)
date: 2021-12-12
modified: 2022-12-25
tags:
    - attack.initial-access
    - attack.t1190
logsource:
    category: webserver
detection:
    keywords:
        - '/Basic/Command/Base64/'
        - '/Basic/ReverseShell/'
        - '/Basic/TomcatMemshell'
        - '/Basic/JettyMemshell'
        - '/Basic/WeblogicMemshell'
        - '/Basic/JBossMemshell'
        - '/Basic/WebsphereMemshell'
        - '/Basic/SpringMemshell'
        - '/Deserialization/URLDNS/'
        - '/Deserialization/CommonsCollections1/Dnslog/'
        - '/Deserialization/CommonsCollections2/Command/Base64/'
        - '/Deserialization/CommonsBeanutils1/ReverseShell/'
        - '/Deserialization/Jre8u20/TomcatMemshell'
        - '/TomcatBypass/Dnslog/'
        - '/TomcatBypass/Command/'
        - '/TomcatBypass/ReverseShell/'
        - '/TomcatBypass/TomcatMemshell'
        - '/TomcatBypass/SpringMemshell'
        - '/GroovyBypass/Command/'
        - '/WebsphereBypass/Upload/'
    condition: keywords
falsepositives:
    - Legitimate apps the use these paths
level: high
Convert to SIEM query
high
JXA In-memory Execution Via OSAScript
Detects possible malicious execution of JXA in-memory via OSAScript
status test author Sohan G (D4rkCiph3r) id f1408a58-0e94-4165-b80a-da9f96cf6fc3
view Sigma YAML 
title: JXA In-memory Execution Via OSAScript
id: f1408a58-0e94-4165-b80a-da9f96cf6fc3
related:
    - id: 1bc2e6c5-0885-472b-bed6-be5ea8eace55
      type: derived
status: test
description: Detects possible malicious execution of JXA in-memory via OSAScript
references:
    - https://redcanary.com/blog/applescript/
author: Sohan G (D4rkCiph3r)
date: 2023-01-31
tags:
    - attack.t1059.002
    - attack.t1059.007
    - attack.execution
logsource:
    product: macos
    category: process_creation
detection:
    selection_main:
        CommandLine|contains|all:
            - 'osascript'
            - ' -e '
            - 'eval'
            - 'NSData.dataWithContentsOfURL'
    selection_js:
        - CommandLine|contains|all:
              - ' -l '
              - 'JavaScript'
        - CommandLine|contains: '.js'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high
Convert to SIEM query
high
Java Payload Strings
Detects possible Java payloads in web access logs
status test author frack113, Harjot Singh, "@cyb3rjy0t" (update) id 583aa0a2-30b1-4d62-8bf3-ab73689efe6c
view Sigma YAML 
title: Java Payload Strings
id: 583aa0a2-30b1-4d62-8bf3-ab73689efe6c
status: test
description: Detects possible Java payloads in web access logs
references:
    - https://www.rapid7.com/blog/post/2022/06/02/active-exploitation-of-confluence-cve-2022-26134/
    - https://www.rapid7.com/blog/post/2021/09/02/active-exploitation-of-confluence-server-cve-2021-26084/
    - https://github.com/httpvoid/writeups/blob/62d3751945289d088ccfdf4d0ffbf61598a2cd7d/Confluence-RCE.md
    - https://twitter.com/httpvoid0x2f/status/1532924261035384832
    - https://medium.com/geekculture/text4shell-exploit-walkthrough-ebc02a01f035
author: frack113, Harjot Singh, "@cyb3rjy0t" (update)
date: 2022-06-04
modified: 2023-01-19
tags:
    - cve.2022-26134
    - cve.2021-26084
    - attack.initial-access
    - attack.t1190
logsource:
    category: webserver
detection:
    keywords:
        - '%24%7B%28%23a%3D%40'
        - '${(#a=@'
        - '%24%7B%40java'
        - '${@java'
        - 'u0022java'
        - '%2F%24%7B%23'
        - '/${#'
        - 'new+java.'
        - 'getRuntime().exec('
        - 'getRuntime%28%29.exec%28'
    condition: keywords
falsepositives:
    - Legitimate apps
level: high
Convert to SIEM query
high
JexBoss Command Sequence
Detects suspicious command sequence that JexBoss
status test author Florian Roth (Nextron Systems) id 8ec2c8b4-557a-4121-b87c-5dfb3a602fae
view Sigma YAML 
title: JexBoss Command Sequence
id: 8ec2c8b4-557a-4121-b87c-5dfb3a602fae
status: test
description: Detects suspicious command sequence that JexBoss
references:
    - https://www.us-cert.gov/ncas/analysis-reports/AR18-312A
author: Florian Roth (Nextron Systems)
date: 2017-08-24
modified: 2025-11-22
tags:
    - attack.execution
    - attack.t1059.004
logsource:
    product: linux
detection:
    keywords:
        '|all':
            - 'bash -c /bin/bash'
            - '&/dev/tcp/'
    condition: keywords
falsepositives:
    - Unknown
level: high
Convert to SIEM query
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