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37 lines
1.2 KiB
YAML
37 lines
1.2 KiB
YAML
title: Suspicious PowerShell Command Line
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id: d7bcd677-645d-4691-a8d4-7a5602b780d1
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description: Detects the PowerShell command lines with special characters
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status: experimental
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references:
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- https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=64
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tags:
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- attack.defense_evasion
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- attack.t1027
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- attack.execution
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- attack.t1059.001
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author: Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community
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date: 2020/10/15
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logsource:
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category: process_creation
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product: windows
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detection:
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selection1:
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Image|endswith: '\powershell.exe'
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CommandLine|re: '.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*\+.*'
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selection2:
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Image|endswith: '\powershell.exe'
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CommandLine|re: '.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*'
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selection3:
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Image|endswith: '\powershell.exe'
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CommandLine|re: '.*{.*{.*{.*{.*{.*'
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selection4:
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Image|endswith: '\powershell.exe'
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CommandLine|re: '.*\^.*\^.*\^.*\^.*\^.*'
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selection5:
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Image|endswith: '\powershell.exe'
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CommandLine|re: '.*`.*`.*`.*`.*`.*'
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condition: selection1 or selection2 or selection3 or selection4 or selection5
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falsepositives:
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- Unlikely
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level: high
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