Sigma rule: Suspicious Files in Default GPO Folder

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-99096f588c84, updated 2022-04-28T00:00:00.000Z.

Rule

Title: Suspicious Files in Default GPO Folder
Status: test
Level: medium
Author: elhoim
Date: 2022-04-28
File: rules/windows/file/file_event/file_event_win_susp_default_gpo_dir_write.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of copy of suspicious files (EXE/DLL) to the default GPO storage folder

Log source

product: windows
category: file_event

Detection

selection:
    TargetFilename|contains: '\Policies\{31B2F340-016D-11D2-945F-00C04FB984F9}\'
    TargetFilename|endswith:
        - '.dll'
        - '.exe'
condition: selection

False positives (as the rule lists them)

Unknown

MITRE ATT&CK ids this rule names

T1036.005

References

https://redcanary.com/blog/intelligence-insights-november-2021/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_susp_default_gpo_dir_write.yml

Sources and licences

SigmaHQ
"Suspicious Files in Default GPO Folder" by elhoim (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_susp_default_gpo_dir_write.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious Files in Default GPO Folder",
entity page, dataset version ref-99096f588c84, updated 2022-04-28T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/5f87308a-0a5b-4623-ae15-d8fa1809bc60 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 5f87308a-0a5b-4623-ae15-d8fa1809bc60, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.