UAC Bypass Using wsreset.exe Registry Command Path (Windows)

title: UAC Bypass Using wsreset.exe Registry Command Path (Windows)
id: 073ad107-8a36-4a57-a068-9f83a9378efa
status: test
description: This rule flags registry activity targeting a specific AppX command path used to launch a binary via a wsreset-related execution flow. UAC bypass techniques matter because they can allow a low-privileged context to trigger elevated execution without normal user prompts. The detection relies on registry event telemetry matching the exact TargetObject string that ends with the specified command path.
references:
  - https://www.bleepingcomputer.com/news/security/trickbot-uses-a-new-windows-10-uac-bypass-to-launch-quietly
  - https://lolbas-project.github.io/lolbas/Binaries/Wsreset
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/registry/registry_event/registry_event_bypass_via_wsreset.yml
author: oscd.community, Dmitry Uchakin, Huntrule Team
date: 2020-10-07
modified: 2021-11-27
tags:
  - attack.privilege-escalation
  - attack.t1548.002
logsource:
  category: registry_event
  product: windows
detection:
  selection:
    TargetObject|endswith: \AppX82a6gwre4fdg3bt635tn5ctqjf8msdd2\Shell\open\command
  condition: selection
falsepositives:
  - Unknown
level: high
license: DRL-1.1
related:
  - id: 6ea3bf32-9680-422d-9f50-e90716b12a66
    type: derived