Sigma rule: Taskmgr as LOCAL_SYSTEM

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-abb859eeb38d, updated 2022-05-27T00:00:00.000Z.

Rule

Title
Taskmgr as LOCAL_SYSTEM
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2018-03-18
Modified
2022-05-27
File
rules/windows/process_creation/proc_creation_win_taskmgr_localsystem.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of taskmgr.exe process in context of LOCAL_SYSTEM

Log source

product
windows
category
process_creation

Detection

selection:
    User|contains: # covers many language settings
        - 'AUTHORI'
        - 'AUTORI'
    Image|endswith: '\taskmgr.exe'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • attack.t1036

MITRE ATT&CK ids this rule names

References

  • Internal Research

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_taskmgr_localsystem.yml

Sources and licences

  • SigmaHQ

    "Taskmgr as LOCAL_SYSTEM" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_taskmgr_localsystem.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: Taskmgr as LOCAL_SYSTEM",
entity page, dataset version ref-abb859eeb38d, updated 2022-05-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/9fff585c-c33e-4a86-b3cd-39312079a65f (accessed 2026-11-03).
Underlying source: SigmaHQ rule 9fff585c-c33e-4a86-b3cd-39312079a65f, 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.