frack113
36 lines
933 B
YAML
36 lines
933 B
YAML
title: PowerShell Downgrade Attack
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id: b3512211-c67e-4707-bedc-66efc7848863
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related:
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- id: 6331d09b-4785-4c13-980f-f96661356249
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type: derived
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status: test
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description: Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0
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author: Harish Segar (rule)
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references:
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- http://www.leeholmes.com/blog/2017/03/17/detecting-and-preventing-powershell-downgrade-attacks/
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date: 2020/03/20
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modified: 2021/11/27
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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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selection:
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CommandLine|contains:
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- ' -version 2 '
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- ' -versio 2 '
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- ' -versi 2 '
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- ' -vers 2 '
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- ' -ver 2 '
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- ' -ve 2 '
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Image|endswith: '\powershell.exe'
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condition: selection
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falsepositives:
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- Penetration Test
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- Unknown
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level: medium
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tags:
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- attack.defense_evasion
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- attack.execution
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- attack.t1086 # an old one
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- attack.t1059.001
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