Linux Setuid Capability Set on a Binary via Setcap Utility

Luc Génaux

Detects the use of the 'setcap' utility to set the 'setuid' capability (cap_setuid) on a binary file. This capability allows a non privileged process to make arbitrary manipulations of user IDs (UIDs), including setting its current UID to a value that would otherwise be restricted (i.e. UID 0, the root user). This behavior can be used by adversaries to backdoor a binary in order to escalate privileges again in the future if needed.

2026-01-24 00:00:00

None

ed447910-bc30-4575-a598-3a2e49516a7a

attack.privilege-escalation attack.defense-evasion attack.persistence attack.t1548 attack.t1554

Community Rule

EzLucky

Merge PR #5771 from @EzLucky - Add and Update Setcap Related Rules

2026-01-24