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41 lines
960 B
YAML
41 lines
960 B
YAML
action: global
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title: Invoke-Obfuscation VAR+ Launcher
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id: 8ca7004b-e620-4ecb-870e-86129b5b8e75
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description: Detects Obfuscated use of Environment Variables to execute PowerShell
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status: experimental
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author: Jonathan Cheong, oscd.community
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date: 2020/10/15
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modified: 2021/06/10
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references:
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- https://github.com/Neo23x0/sigma/issues/1009 #(Task 24)
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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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falsepositives:
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- Unknown
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level: high
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detection:
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selection:
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- ImagePath|re: '.*cmd.{0,5}(?:\/c|\/r)(?:\s|)\"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\\"\s+?\-f(?:.*\)){1,}.*\"'
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condition: all of them
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---
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logsource:
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product: windows
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service: system
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detection:
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selection_eventid:
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EventID: 7045
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---
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logsource:
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product: windows
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category: process_creation
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---
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logsource:
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product: windows
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service: security
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detection:
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selection_eventid:
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EventID: 4697
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