Powershell Timestomp
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About the rule
Rule Type
Standard
Rule Description
Adversaries may modify file time attributes to hide new or changes to existing files. Timestomping is a technique that modifies the timestamps of a file (the modify, access, create, and change times), often to mimic files that are in the same folder.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "PowerShell Script Block Logged" AND SCRIPTEXECUTED contains ".CreationTime =,.LastWriteTime =,.LastAccessTime =,[IO.File]::SetCreationTime,[IO.File]::SetLastAccessTime,[IO.File]::SetLastWriteTime" select Action1.HOSTNAME,Action1.MESSAGE,Action1.SCRIPTEXECUTED
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
