HighSigmaHQ Li Ling +3

Shell Execution via Flock - Linux

Detects the use of the "flock" command to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Network Devices Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: linux
Log source category: process_creation

Known benign triggers

Unknown

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
gtfobins.github.io/gtfobins/flock/#shell	Tool	3from 2 sources
www.elastic.co/guide/en/security/current/linux-restricted-shell-breakout-via-linux-binary-s.html	Product documentation	7

Detection rules

Shell Execution via Flock - Linux

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules