Suspicious SYSVOL Domain Group Policy Access — Sigma Rule

Rule metadata and linked tags

Author: Markus Neis, Jonhnathan Ribeiro, oscd.community. Source status: test; severity: medium. Source dates: 2018-04-09 / 2022-01-07.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 626ac7dd7009f72f4106ce12ba27ae20524a86d486e145c870361b5c7a2d9dc2

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Suspicious SYSVOL Domain Group Policy Access
id: 05f3c945-dcc8-4393-9f3d-af65077a8f86
status: test
description: Detects Access to Domain Group Policies stored in SYSVOL
references:
    - https://adsecurity.org/?p=2288
    - https://www.hybrid-analysis.com/sample/f2943f5e45befa52fb12748ca7171d30096e1d4fc3c365561497c618341299d5?environmentId=100
author: Markus Neis, Jonhnathan Ribeiro, oscd.community
date: 2018-04-09
modified: 2022-01-07
tags:
    - attack.credential-access
    - attack.t1552.006
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - '\SYSVOL\'
            - '\policies\'
    condition: selection
falsepositives:
    - Administrative activity
level: medium

Original YAML and metadata in JSON

False positives

• Administrative activity

Source references

• https://adsecurity.org/?p=2288
• https://www.hybrid-analysis.com/sample/f2943f5e45befa52fb12748ca7171d30096e1d4fc3c365561497c618341299d5?environmentId=100