Bypass UAC via WSReset.exe

 Original Source: [Sigma source]
Title: Bypass UAC via WSReset.exe
Status: test
Description:Detects use of WSReset.exe to bypass User Account Control (UAC). Adversaries use this technique to execute privileged processes.
References:
  -https://eqllib.readthedocs.io/en/latest/analytics/532b5ed4-7930-11e9-8f5c-d46d6d62a49e.html
  -https://lolbas-project.github.io/lolbas/Binaries/Wsreset/
  -https://www.activecyber.us/activelabs/windows-uac-bypass
  -https://twitter.com/ReaQta/status/1222548288731217921
Author: E.M. Anhaus (originally from Atomic Blue Detections, Tony Lambert), oscd.community, Florian Roth
Date: 2019-10-24
modified:2022-05-13
Tags:
  • -'attack.privilege-escalation'
  • -'attack.t1548.002'
Logsource:
  • category: process_creation
  • product: windows
Detection:
  selection:
    ParentImage|endswith: '\wsreset.exe'
  filter:
Image|endswith:'\conhost.exe' OriginalFileName:'CONHOST.EXE'   condition:selection and not filter
Falsepositives:
  -Unknown sub processes of Wsreset.exe
Level: high