Sigma rule: Group Has Been Deleted Via Groupdel

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5c1f20549bce, updated 2022-12-26T00:00:00.000Z.

Rule

Title
Group Has Been Deleted Via Groupdel
Status
test
Level
medium
Author
Tuan Le (NCSGroup)
Date
2022-12-26
File
rules/linux/process_creation/proc_creation_lnx_groupdel.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of the "groupdel" binary. Which is used to delete a group. This is sometimes abused by threat actors in order to cover their tracks

Log source

product
linux
category
process_creation

Detection

selection:
    Image|endswith: '/groupdel'
condition: selection

False positives (as the rule lists them)

  • Legitimate administrator activities

Tags

  • attack.impact
  • attack.t1531

MITRE ATT&CK ids this rule names

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/linux/process_creation/proc_creation_lnx_groupdel.yml

Sources and licences

  • SigmaHQ

    "Group Has Been Deleted Via Groupdel" by Tuan Le (NCSGroup) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/process_creation/proc_creation_lnx_groupdel.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: Group Has Been Deleted Via Groupdel",
entity page, dataset version ref-5c1f20549bce, updated 2022-12-26T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/8a46f16c-8c4c-82d1-b121-0fdd3ba70a84 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 8a46f16c-8c4c-82d1-b121-0fdd3ba70a84, 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.