36 lines
1.1 KiB
YAML
36 lines
1.1 KiB
YAML
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title: Powershell Timestomp
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author: frack113
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date: 2021/08/03
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description: Adversaries may modify file time attributes to hide new or changes to
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existing files. Timestomping is a technique that modifies the timestamps of a file
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(the modify, access, create, and change times), often to mimic files that are in
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the same folder.
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detection:
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SELECTION_1:
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ScriptBlockText:
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- '*.CreationTime =*'
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- '*.LastWriteTime =*'
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- '*.LastAccessTime =*'
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- '*[IO.File]::SetCreationTime*'
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- '*[IO.File]::SetLastAccessTime*'
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- '*[IO.File]::SetLastWriteTime*'
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condition: SELECTION_1
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falsepositives:
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- legitime admin script
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id: c6438007-e081-42ce-9483-b067fbef33c3
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level: medium
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logsource:
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category: ps_script
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definition: EnableScriptBlockLogging must be set to enable
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product: windows
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modified: 2021/10/16
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.006/T1070.006.md
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- https://www.offensive-security.com/metasploit-unleashed/timestomp/
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1070.006
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ruletype: SIGMA
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