Identifier / Programs / Linux and Unix
cobc
GTFOBins shell 1 ATT&CK technique 1 documented command
How cobc is abused
Each abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for cobc.
1 documented command
shell unprivileged, with sudo, as SUID
The /path/to/temp-file sill be overwritten after the execution.
echo 'CALL "SYSTEM" USING "/bin/sh".' >/path/to/temp-file
cobc -xFj --frelax-syntax-checks /path/to/temp-fileThe command the identifier reads trips no Sigma process-creation rule. This command is, with GTFOBins’ notes, from GTFOBins, at commit acd524623f9c of 2026-05-27, under the GPL-3.0, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on GTFOBins’s page for cobc. The identifier reads the line that runs cobc.
What detects it
T1059.004Command and Scripting Interpreter: Unix Shell