Wmiprvse Wbemcomn DLL Hijack — Sigma Rule

Rule metadata and linked tags

Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research). Source status: test; severity: high. Source dates: 2020-10-12 / 2022-10-09.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f6edb7f60187665b3eca46f42846a5057eb4ba4aa94bbfc7673fd63206bee42e

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: Wmiprvse Wbemcomn DLL Hijack
id: 7707a579-e0d8-4886-a853-ce47e4575aaa
status: test
description: Detects a threat actor creating a file named `wbemcomn.dll` in the `C:\Windows\System32\wbem\` directory over the network and loading it for a WMI DLL Hijack scenario.
references:
    - https://threathunterplaybook.com/hunts/windows/201009-RemoteWMIWbemcomnDLLHijack/notebook.html
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-12
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1047
    - attack.lateral-movement
    - attack.t1021.002
logsource:
    product: windows
    category: image_load
detection:
    selection:
        Image|endswith: '\wmiprvse.exe'
        ImageLoaded|endswith: '\wbem\wbemcomn.dll'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://threathunterplaybook.com/hunts/windows/201009-RemoteWMIWbemcomnDLLHijack/notebook.html