TA0003 · PERSISTENCE
ROMMONkit
Adversaries may abuse the ROM Monitor (ROMMON) by loading an unauthorized firmware with adversary code to provide persistent access and manipulate device behavior that is difficult to detect.
Detect it with
There are no documented means for defenders to validate the operation of the ROMMON outside of vendor support. If a network device is suspected of being compromised, contact the vendor to assist in further investigation.
Why it matters on shift
ROMMONkit is one of the concrete ways adversaries achieve persistence. 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 persistence, the next tactic is usually Privilege Escalation. Search your telemetry for the transition before closing the ticket.
Kill-chain context