Scattered Spider / Muddled Libra Tunneling and RMM Tool DNS Detection
This rule detects DNS queries to domains associated with tunneling tools (Ngrok, Tailscale) and Remote Monitoring and Management (RMM) tools (FleetDeck, TacticalRMM, Level.io, Pulseway, ScreenConnect, Splashtop, RustDesk, Atera, Remcos) known to be used by threat actors like Scattered Spider/Muddled Libra for covert persistent connectivity, remote access, and lateral movement. The rule categorizes the detected tools into 'Tunneling' or 'RMM'.
Cortex XDR
