TA0010 · EXFILTRATION
Exfiltration to Cloud Storage
Adversaries may exfiltrate data to a cloud storage service rather than over their primary command and control channel. Cloud storage services allow for the storage, edit, and retrieval of data from a remote cloud storage server over the Internet.
Detect it with
Analyze network data for uncommon data flows (e.g., a client sending significantly more data than it receives from a server) to known cloud storage services.
Why it matters on shift
Exfiltration to Cloud Storage 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