PUA - System Informer Driver Load — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-05-08 / 2024-11-23.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: ffb0f13c591d3ceb0fda11f0a5603cbcb0091ab5cbaa6dda989017d97e0509cc

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: PUA - System Informer Driver Load
id: 10cb6535-b31d-4512-9962-513dcbc42cc1
related:
    - id: 67add051-9ee7-4ad3-93ba-42935615ae8d
      type: similar
status: test
description: Detects driver load of the System Informer tool
references:
    - https://systeminformer.sourceforge.io/
    - https://github.com/winsiderss/systeminformer
author: Florian Roth (Nextron Systems)
date: 2023-05-08
modified: 2024-11-23
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1543
logsource:
    category: driver_load
    product: windows
detection:
    selection:
        - ImageLoaded|endswith: '\SystemInformer.sys'
        - Hashes|contains:
              - 'SHA256=8B9AD98944AC9886EA4CB07700E71B78BE4A2740934BB7E46CA3B56A7C59AD24'
              - 'SHA256=A41348BEC147CA4D9EA2869817527EB5CEA2E20202AF599D2B30625433BCF454'
              - 'SHA256=38EE0A88AF8535A11EFE8D8DA9C6812AA07067B75A64D99705A742589BDD846D'
              - 'SHA256=A773891ACF203A7EB0C0D30942FB1347648F1CD918AE2BFD9A4857B4DCF5081B'
              - 'SHA256=4C3B81AC88A987BBDF7D41FA0AECC2CEDF5B9BD2F45E7A21F376D05345FC211D'
              - 'SHA256=3241BC14BEC51CE6A691B9A3562E5C1D52E9D057D27A3D67FD0B245C350B6D34'
              - 'SHA256=047C42E9BBA28366868847C7DAFC1E043FB038C796422D37220493517D68EE89'
              - 'SHA256=18931DC81E95D0020466FA091E16869DBE824E543A4C2C8FE644FA71A0F44FEB'
              - 'SHA256=B4C2EF76C204273132FDE38F0DED641C2C5EE767652E64E4C4071A4A973B6C1B'
              - 'SHA256=640954AFC268565F7DAA6E6F81A8EE05311E33E34332B501A3C3FE5B22ADEA97'
              - 'SHA256=251BE949F662C838718F8AA0A5F8211FB90346D02BD63FF91E6B224E0E01B656'
              - 'SHA256=E2606F272F7BA054DF16BE464FDA57211EF0D14A0D959F9C8DCB0575DF1186E4'
              - 'SHA256=3A9E1D17BEEB514F1B9B3BACAEE7420285DE5CBDCE89C5319A992C6CBD1DE138'
    condition: selection
falsepositives:
    - System Informer is regularly used legitimately by system administrators or developers. Apply additional filters accordingly
level: medium

Original YAML and metadata in JSON

False positives

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

Source references

• https://systeminformer.sourceforge.io/
• https://github.com/winsiderss/systeminformer