41 lines
1.2 KiB
YAML
41 lines
1.2 KiB
YAML
title: PowerShell SAM Copy
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author: Florian Roth
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date: 2021/07/29
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description: Detects suspicious PowerShell scripts accessing SAM hives
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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CommandLine: '*\HarddiskVolumeShadowCopy*'
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SELECTION_3:
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CommandLine: '*ystem32\config\sam*'
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SELECTION_4:
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CommandLine: '*Copy-Item*'
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SELECTION_5:
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CommandLine: '*cp $_.*'
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SELECTION_6:
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CommandLine: '*cpi $_.*'
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SELECTION_7:
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CommandLine: '*copy $_.*'
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SELECTION_8:
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CommandLine: '*.File]::Copy(*'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and (SELECTION_4 or SELECTION_5
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or SELECTION_6 or SELECTION_7 or SELECTION_8))
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falsepositives:
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- Some rare backup scenarios
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- PowerShell scripts fixing HiveNightmare / SeriousSAM ACLs
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id: 1af57a4b-460a-4738-9034-db68b880c665
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level: high
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logsource:
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category: process_creation
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product: windows
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references:
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- https://twitter.com/splinter_code/status/1420546784250769408
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status: experimental
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tags:
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- attack.credential_access
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- attack.t1003.002
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yml_filename: win_susp_powershell_sam_access.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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