UAC Bypass Using Windows Media Player - File

Description

Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)

Query · sigma

selection1:
  TargetFilename|startswith: C:\Users\
  TargetFilename|endswith: \AppData\Local\Temp\OskSupport.dll
selection2:
  Image: C:\Windows\system32\DllHost.exe
  TargetFilename: C:\Program Files\Windows Media Player\osk.exe
condition: 1 of selection*

Known false positives

  • Unknown
Raw source UAC Bypass Using Windows Media Player - File · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: UAC Bypass Using Windows Media Player - File
id: 68578b43-65df-4f81-9a9b-92f32711a951
status: test
description: Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
references:
    - https://github.com/hfiref0x/UACME
author: Christian Burkard (Nextron Systems)
date: 2021-08-23
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    category: file_event
    product: windows
detection:
    selection1:
        TargetFilename|startswith: 'C:\Users\'
        TargetFilename|endswith: '\AppData\Local\Temp\OskSupport.dll'
    selection2:
        Image: 'C:\Windows\system32\DllHost.exe'
        TargetFilename: 'C:\Program Files\Windows Media Player\osk.exe'
    condition: 1 of selection*
falsepositives:
    - Unknown
level: high

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