Suspicious Files in Default GPO Folder (via file_event)

title: Suspicious Files in Default GPO Folder (via file_event)
id: e808ffe9-2deb-56fd-aac8-69abe54f15da
status: stable
description: This rule detects the creation of copy of anomalous files (EXE/DLL) to the default GPO storage folder
references:
    - https://attack.mitre.org/techniques/T1036/005/
    - https://redcanary.com/blog/intelligence-insights-november-2021/
author: Huntrule Team
date: 2026-06-07
tags:
    - attack.stealth
    - attack.t1036.005
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|contains: '\Policies\{31B2F340-016D-11D2-945F-00C04FB984F9}\'
        TargetFilename|endswith:
            - '.dll'
            - '.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium