TA0004 · PRIVILEGE ESCALATION
VDSO Hijacking
Adversaries may inject malicious code into processes via VDSO hijacking in order to evade process-based defenses as well as possibly elevate privileges.
Detect it with
Monitor for malicious usage of system calls, such as ptrace and mmap, that can be used to attach to, manipulate memory, then redirect a processes' execution path.
Why it matters on shift
VDSO Hijacking is one of the concrete ways adversaries achieve privilege escalation. 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 privilege escalation, the next tactic is usually Defense Evasion. Search your telemetry for the transition before closing the ticket.
Kill-chain context