44 lines
1.3 KiB
YAML
44 lines
1.3 KiB
YAML
title: Clear PowerShell History
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author: Ilyas Ochkov, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community
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date: 2019/10/25
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description: Detects keywords that could indicate clearing PowerShell history
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detection:
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SELECTION_1:
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Payload: '*del*'
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SELECTION_2:
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Payload: '*Remove-Item*'
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SELECTION_3:
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Payload: '*rm*'
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SELECTION_4:
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Payload: '*(Get-PSReadlineOption).HistorySavePath*'
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SELECTION_5:
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Payload: '*Set-PSReadlineOption*'
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SELECTION_6:
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Payload: "*\u2013HistorySaveStyle*"
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SELECTION_7:
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Payload: '*SaveNothing*'
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condition: (((SELECTION_1 or SELECTION_2 or SELECTION_3) and SELECTION_4) or (SELECTION_5
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and SELECTION_6 and SELECTION_7))
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falsepositives:
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- Legitimate PowerShell scripts
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id: f99276ad-d122-4989-a09a-d00904a5f9d2
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level: medium
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logsource:
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category: ps_module
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definition: PowerShell Module Logging must be enabled
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product: windows
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modified: 2021/10/16
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references:
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- https://gist.github.com/hook-s3c/7363a856c3cdbadeb71085147f042c1a
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related:
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- id: dfba4ce1-e0ea-495f-986e-97140f31af2d
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type: derived
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1070.003
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- attack.t1146
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yml_filename: powershell_clear_powershell_history.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/powershell/powershell_module
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