file_creation_time_changed_via_powershell

rule file_creation_time_changed_via_powershell {
 meta:
    author = "Lee Archinal (content) Aric Gady (threat emulation)"
    description = "Detects Timestomping activities through PowerShell  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/wkd7GTCCV5bF"
    version = "0.01"
    created = "2019/06/30"
    product = "windows"
    service = "sysmon"
    mitre = "defense_evasion, t1099"

  events:
($selection.metadata.product_event_type = "2" and re.regex($selection.target.process.file.full_path, `.*\\powershell\.exe`))

  condition:
    $selection
}