Wmiprvse Wbemcomn DLL Hijack - File — Sigma Rule

Rule metadata and linked tags

Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research). Source status: test; severity: critical. Source dates: 2020-10-12 / 2022-12-02.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: c3754c06e7bc070527323e17538d1e6dba5879b3d440d2f9381afdfdee32eee5

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 - File
id: 614a7e17-5643-4d89-b6fe-f9df1a79641c
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: 2022-12-02
tags:
    - attack.execution
    - attack.t1047
    - attack.lateral-movement
    - attack.t1021.002
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image: System
        TargetFilename|endswith: '\wbem\wbemcomn.dll'
    condition: selection
falsepositives:
    - Unknown
level: critical

Original YAML and metadata in JSON

False positives

• Unknown

Source references

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