TA0005 · DEFENSE EVASION
Polymorphic Code
Adversaries may utilize polymorphic code (also known as metamorphic or mutating code) to evade detection. Polymorphic code is a type of software capable of changing its runtime footprint during code execution.
Detect it with
No MITRE detection guidance published. Build coverage from the parent technique and your own telemetry.
Why it matters on shift
Polymorphic Code 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