m4m4

m4 is a Unix living-off-the-land binary catalogued by the GTFOBins. Documented abuse functions: command, file-read, shell. Mapped ATT&CK techniques (per LOLBAS / GTFOBins → MITRE crosswalk): T1005, T1059. Defenders should monitor execution of m4 under non-administrative or sudo contexts and alert when its arguments match the abuse-function signatures.