UAC Bypass Using IDiagnostic Profile - File — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2022-07-03 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f9ce16658b425723c50edb50d6bcc3100a84cf8718d5d942ac8e11d22be3a767

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: UAC Bypass Using IDiagnostic Profile - File
id: 48ea844d-19b1-4642-944e-fe39c2cc1fec
status: test
description: Detects the creation of a file by "dllhost.exe" in System32 directory part of "IDiagnosticProfileUAC" UAC bypass technique
references:
    - https://github.com/Wh04m1001/IDiagnosticProfileUAC
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-07-03
tags:
    - attack.execution
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith: '\DllHost.exe'
        TargetFilename|startswith: 'C:\Windows\System32\'
        TargetFilename|endswith: '.dll'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/Wh04m1001/IDiagnosticProfileUAC