Sigma rule: PUA - System Informer Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-910dce8abd17, updated 2024-11-23T00:00:00.000Z.

Rule

Title
PUA - System Informer Execution
Status
test
Level
medium
Author
Florian Roth (Nextron Systems)
Date
2023-05-08
Modified
2024-11-23
File
rules/windows/process_creation/proc_creation_win_pua_system_informer.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of System Informer, a task manager tool to view and manipulate processes, kernel options and other low level operations

Log source

product
windows
category
process_creation

Detection

selection:
    - Image|endswith: '\SystemInformer.exe'
    - OriginalFileName: 'SystemInformer.exe'
    - Description: 'System Informer'
    - Product: 'System Informer'
    - Hashes|contains:
          # Note: add other hashes as needed
          # 3.0.11077.6550
          - 'MD5=19426363A37C03C3ED6FEDF57B6696EC'
          - 'SHA1=8B12C6DA8FAC0D5E8AB999C31E5EA04AF32D53DC'
          - 'SHA256=8EE9D84DE50803545937A63C686822388A3338497CDDB660D5D69CF68B68F287'
          - 'IMPHASH=B68908ADAEB5D662F87F2528AF318F12'
condition: selection

False positives (as the rule lists them)

  • System Informer is regularly used legitimately by system administrators or developers. Apply additional filters accordingly

Tags

  • attack.persistence
  • attack.privilege-escalation
  • attack.discovery
  • attack.stealth
  • attack.t1082
  • attack.t1564
  • attack.t1543

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_pua_system_informer.yml

Sources and licences

  • SigmaHQ

    "PUA - System Informer Execution" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_pua_system_informer.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: PUA - System Informer Execution",
entity page, dataset version ref-910dce8abd17, updated 2024-11-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/5722dff1-4bdd-4949-86ab-fbaf707e767a (accessed 2026-11-03).
Underlying source: SigmaHQ rule 5722dff1-4bdd-4949-86ab-fbaf707e767a, 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.