Gpresult Display Group Policy Information — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-05-01 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b8bda339b93e260e7f2e2b6bc82e5d18d130eaf3efb768642b3789e80598296c

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: Gpresult Display Group Policy Information
id: e56d3073-83ff-4021-90fe-c658e0709e72
status: test
description: Detects cases in which a user uses the built-in Windows utility gpresult to display the Resultant Set of Policy (RSoP) information
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1615/T1615.md
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/gpresult
    - https://unit42.paloaltonetworks.com/emissary-trojan-changelog-did-operation-lotus-blossom-cause-it-to-evolve/
    - https://www.welivesecurity.com/wp-content/uploads/2020/05/ESET_Turla_ComRAT.pdf
author: frack113
date: 2022-05-01
tags:
    - attack.discovery
    - attack.t1615
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        Image|endswith: '\gpresult.exe'
        CommandLine|contains:
            - '/z'
            - '/v'
    condition: selection
falsepositives:
    - Unknown
level: medium
simulation:
    - type: atomic-red-team
      name: Display group policy information via gpresult
      technique: T1615
      atomic_guid: 0976990f-53b1-4d3f-a185-6df5be429d3b
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_gpresult_execution/info.yml

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1615/T1615.md
• https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/gpresult
• https://unit42.paloaltonetworks.com/emissary-trojan-changelog-did-operation-lotus-blossom-cause-it-to-evolve/
• https://www.welivesecurity.com/wp-content/uploads/2020/05/ESET_Turla_ComRAT.pdf