TA0005 · DEFENSE EVASION
Direct Volume Access
Adversaries may directly access a volume to bypass file access controls and file system monitoring. Windows allows programs to have direct access to logical volumes.
Detect it with
Monitor handle opens on drive volumes that are made by processes to determine when they may directly access logical drives. Monitor processes and command-line arguments for actions that could be taken to copy files from the logical drive and evade common file system protections.
Why it matters on shift
Direct Volume Access is one of the concrete ways adversaries achieve defense evasion. 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 defense evasion, the next tactic is usually Credential Access. Search your telemetry for the transition before closing the ticket.
Kill-chain context