Suspicious SYSVOL Domain Group Policy Access

A Sigma rule for process creation on Windows, by Markus Neis, Jonhnathan Ribeiro, oscd.community.

medium 1 ATT&CK technique

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains|all:
      - '\SYSVOL\'
      - '\policies\'
  condition: selection

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Markus Neis, Jonhnathan Ribeiro, oscd.community, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

documented abuse, read by CmdID

The commands LOLBAS or GTFOBins documents for findstr.exe trip it: each is on its program’s page, read by CmdID.

ATT&CK

the techniques it is tagged with

T1552.006Unsecured Credentials: Group Policy Preferences

Suspicious SYSVOL Domain Group Policy Access

What it looks for

Command lines that trip it

ATT&CK

Other rules for T1552.006 Unsecured Credentials: Group Policy Preferences