Unsigned Mfdetours.DLL Sideloading

 Original Source: [Sigma source]
Title: Unsigned Mfdetours.DLL Sideloading
Status: test
Description:Detects DLL sideloading of unsigned "mfdetours.dll". Executing "mftrace.exe" can be abused to attach to an arbitrary process and force load any DLL named "mfdetours.dll" from the current directory of execution.
References:
  -Internal Research
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2023-08-11
modified:None
Tags:
  • -'attack.persistence'
  • -'attack.privilege-escalation'
  • -'attack.execution'
  • -'attack.stealth'
  • -'attack.t1574.001'
Logsource:
  • category: image_load
  • product: windows
Detection:
  selection:
    ImageLoaded|endswith: '\mfdetours.dll'
  filter_main_legit_path:
    ImageLoaded|contains: ':\Program Files (x86)\Windows Kits\10\bin\'
    SignatureStatus: 'Valid'
  condition:selection and not 1 of filter_main_*
Falsepositives:
  -Unlikely
Level: high