Sigma rule: User Added To Highly Privileged Group

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-d89bb3e21db8, updated 2024-02-23T00:00:00.000Z.

Rule

Title
User Added To Highly Privileged Group
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2024-02-23
File
rules/windows/process_creation/proc_creation_win_susp_add_user_privileged_group.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects addition of users to highly privileged groups via "Net" or "Add-LocalGroupMember".

Log source

product
windows
category
process_creation

Detection

selection_main:
    - CommandLine|contains|all:
          # net.exe
          - 'localgroup '
          - ' /add'
    - CommandLine|contains|all:
          # powershell.exe
          - 'Add-LocalGroupMember '
          - ' -Group '
selection_group:
    CommandLine|contains:
        - 'Group Policy Creator Owners'
        - 'Schema Admins'
condition: all of selection_*

False positives (as the rule lists them)

  • Administrative activity that must be investigated

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.t1098

MITRE ATT&CK ids this rule names

Related rules

References

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/process_creation/proc_creation_win_susp_add_user_privileged_group.yml

Sources and licences

  • SigmaHQ

    "User Added To Highly Privileged Group" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_susp_add_user_privileged_group.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: User Added To Highly Privileged Group",
entity page, dataset version ref-d89bb3e21db8, updated 2024-02-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/10fb649c-3600-4d37-b1e6-56ea90bb7e09 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 10fb649c-3600-4d37-b1e6-56ea90bb7e09, 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.