Security ArtifactsDFIR Intelligence
SearchSign inSubscribe

T1055.009sub-technique of T1055 Process Injection

Proc Memory

Linuxnothing on this site yetT1055.009 on attack.mitre.org

Adversaries may inject malicious code into processes via the /proc filesystem in order to evade process-based defenses as well as possibly elevate privileges. Proc memory injection is a method of executing arbitrary code in the address space of a separate live process.

MITRE ATT&CK 19.2, retrieved 2026-09-12

If this is happening now

1

Checklists and playbooks to open while the alert is still live.

Playbook for this stage

Cloud account compromise

Impossible travel, an unrecognised inbox rule, or a reported invoice-fraud attempt.

how MITRE says to see it

Detection Strategy for /proc Memory Injection on Linux

  • Detects adversary behavior where a process enumerates and modifies another process's memory using /proc/[pid]/maps and /proc/[pid]/mem files. This includes identifying gadgets via memory mappings and overwriting process memory via low-level file modification or dd usage.

what reduces it

  • M1040 Behavior Prevention on Endpoint. Some endpoint security solutions can be configured to block some types of process injection based on common sequences of behavior that occur during the injection process.
  • M1022 Restrict File and Directory Permissions. Restrict the permissions on sensitive files such as `/proc/[pid]/maps` or `/proc/[pid]/mem`.

the rest of T1055

The description, detection analytics and mitigations are reproduced from MITRE ATT&CK, version 19.2, under its terms of use. The checklists, hunts, labs and everything else linked here are this site’s.