Wsreset.exe

During startup, wsreset.exe checks the registry value HKCU\Software\Classes\AppX82a6gwre4fdg3bt635tn5ctqjf8msdd2\Shell\open\command for the command to run. Binary will be executed as a high-integrity process without a UAC prompt being displayed to the user.

Use Execute a binary or script as a high-integrity process without a UAC prompt.

wsreset.exe

Context

user

Native

UAC Bypass

MITRE

T1548.002

Detection

Sigma: github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_uac_bypass_wsreset_integrity_level.yml

Sigma: github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_uac_bypass_wsreset.yml

Sigma: github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/registry/registry_event/registry_event_bypass_via_wsreset.yml#

Splunk: github.com/splunk/security_content/blob/18f63553a9dc1a34122fa123deae2b2f9b9ea391/detections/endpoint/wsreset_uac_bypass.yml

IOC: wsreset.exe launching child process other than mmc.exe

IOC: Creation or modification of the registry value HKCU\Software\Classes\AppX82a6gwre4fdg3bt635tn5ctqjf8msdd2\Shell\open\command

IOC: Microsoft Defender Antivirus as Behavior:Win32/UACBypassExp.T!gen

Refs

www.activecyber.us/activelabs/windows-uac-bypass

twitter.com/ihack4falafel/status/1106644790114947073

github.com/hfiref0x/UACME/blob/master/README.md

lolbas-project.github.io/lolbas/Binaries/Wsreset/