UAC Bypass via Event Viewer Registry Hijacking
This rule detects a User Account Control (UAC) bypass technique that leverages the Windows Event Viewer (eventvwr.exe). Specifically, it looks for modifications to the registry key `\mscfile\shell\open\command`. This registry key is associated with how .msc files (Microsoft Management Console snap-ins) are opened. By manipulating this key, an attacker can hijack the execution flow when eventvwr.exe is launched, causing it to execute an arbitrary command with elevated privileges without a UAC prompt. This is a known method for privilege escalation and defense evasion.
Sigma
