Larva-24009 PowerShell-dropped QuasarRAT + UltraVNC dual RAT install
Detects dual remote-access activity initiated by PowerShell. The rule tracks two behaviors: the installation of an UltraVNC server listener on ports 5800/5900, and PowerShell-spawned executables dropped into common user-writable directories (Temp, AppData, etc.) establishing network connections to known Larva-24009 C2 infrastructure.
Microsoft Sentinel (KQL)
