38 lines
1.0 KiB
YAML
38 lines
1.0 KiB
YAML
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title: Indirect Command Execution
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ruletype: Sigma
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author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
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date: 2019/10/24
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description: Detect indirect command execution via Program Compatibility Assistant
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(pcalua.exe or forfiles.exe).
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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ParentImage:
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- '*\pcalua.exe'
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- '*\forfiles.exe'
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condition: (SELECTION_1 and SELECTION_2)
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falsepositives:
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- Need to use extra processing with 'unique_count' / 'filter' to focus on outliers
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as opposed to commonly seen artifacts.
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- Legitimate usage of scripts.
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fields:
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- ComputerName
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- User
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- ParentCommandLine
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- CommandLine
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id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02
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level: low
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logsource:
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category: process_creation
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product: windows
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modified: 2021/11/27
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1202/T1202.md
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- https://eqllib.readthedocs.io/en/latest/analytics/884a7ccd-7305-4130-82d0-d4f90bc118b6.html
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status: test
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tags:
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- attack.defense_evasion
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- attack.t1202
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