TA0010 · EXFILTRATION
Exfiltration Over Unencrypted Non-C2 Protocol
Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server.
Detect it with
Analyze network data for uncommon data flows (e.g., a client sending significantly more data than it receives from a server). Processes utilizing the network that do not normally have network communication or have never been seen before are suspicious.
Why it matters on shift
Exfiltration Over Unencrypted Non-C2 Protocol is one of the concrete ways adversaries achieve exfiltration. 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 exfiltration, the next tactic is usually Impact. Search your telemetry for the transition before closing the ticket.
Kill-chain context