Potential Edputil.DLL Sideloading — Sigma Rule

Rule metadata and linked tags

Author: X__Junior (Nextron Systems). Source status: test; severity: high. Source dates: 2023-06-09 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: eb9effe23b19b2b7a39fad392f50c2ae9650db14749ea42f2f0eca0c875c46c7

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: Potential Edputil.DLL Sideloading
id: e4903324-1a10-4ed3-981b-f6fe3be3a2c2
status: test
description: Detects potential DLL sideloading of "edputil.dll"
references:
    - https://alternativeto.net/news/2023/5/cybercriminals-use-wordpad-vulnerability-to-spread-qbot-malware/
author: X__Junior (Nextron Systems)
date: 2023-06-09
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|endswith: '\edputil.dll'
    filter_main_generic:
        ImageLoaded|startswith:
            - 'C:\Windows\System32\'
            - 'C:\Windows\SysWOW64\'
            - 'C\Windows\WinSxS\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unlikely
level: high

Original YAML and metadata in JSON

False positives

• Unlikely

Source references

• https://alternativeto.net/news/2023/5/cybercriminals-use-wordpad-vulnerability-to-spread-qbot-malware/