TA0006 · CREDENTIAL ACCESS
Proc Filesystem
Adversaries may gather credentials from the proc filesystem or /proc. The proc filesystem is a pseudo-filesystem used as an interface to kernel data structures for Linux based systems managing virtual memory.
Detect it with
To obtain the passwords and hashes stored in memory, processes must open a maps file in the /proc filesystem for the process being analyzed.
Why it matters on shift
Proc Filesystem is one of the concrete ways adversaries achieve credential access. 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 credential access, the next tactic is usually Discovery. Search your telemetry for the transition before closing the ticket.
Kill-chain context