TA0003 · PERSISTENCE
Socket Filters
Adversaries may attach filters to a network socket to monitor then activate backdoors used for persistence or command and control.
Detect it with
Identify running processes with raw sockets. Ensure processes listed have a need for an open raw socket and are in accordance with enterprise policy.
Why it matters on shift
Socket Filters is one of the concrete ways adversaries achieve persistence. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.
What to look for next
After persistence, the next tactic is usually Privilege Escalation. Search your telemetry for the transition before closing the ticket.
Kill-chain context