UAC Bypass Using .NET Code Profiler on MMC

Severity: high
Author: Christian Burkard (Nextron Systems)
Source: upstream

Detects the pattern of UAC Bypass using .NET Code Profiler and mmc.exe DLL hijacking (UACMe 39)

MITRE ATT&CK coverage

Tactic	Techniques
Privilege Escalation	`T1548.002` Abuse Elevation Control Mechanism: Bypass User Account Control
Defense Evasion	`T1548.002` Abuse Elevation Control Mechanism: Bypass User Account Control

Event coverage

Provider	Event ID	Title
Sysmon	11	FileCreate

Stages and Predicates

Stage 1: `selection`

TargetFilename|endswith: '\AppData\Local\Temp\pe386.dll'
TargetFilename|startswith: 'C:\Users\'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.