30 lines
853 B
YAML
30 lines
853 B
YAML
title: Invoke-Obfuscation VAR+ Launcher
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author: Jonathan Cheong, oscd.community
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date: 2020/10/15
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description: Detects Obfuscated use of Environment Variables to execute PowerShell
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detection:
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SELECTION_1:
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EventID: 7045
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SELECTION_2:
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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: (SELECTION_1 and SELECTION_2)
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falsepositives:
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- Unknown
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id: 8ca7004b-e620-4ecb-870e-86129b5b8e75
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level: high
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logsource:
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product: windows
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service: system
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modified: 2021/09/17
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references:
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- https://github.com/Neo23x0/sigma/issues/1009
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status: experimental
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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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yml_filename: win_invoke_obfuscation_var_services.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin
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