TA0009 · COLLECTION
Email Forwarding Rule
Adversaries may setup email forwarding rules to collect sensitive information.
Detect it with
Detection is challenging because all messages forwarded because of an auto-forwarding rule have the same presentation as a manually forwarded message.
Why it matters on shift
Email Forwarding Rule is one of the concrete ways adversaries achieve collection. 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 collection, the next tactic is usually Command and Control. Search your telemetry for the transition before closing the ticket.
Kill-chain context