CmdID / Programs / Linux and Unix
csh
The shell (command interpreter) with C-like syntax. tldr-pages
GTFOBins file-write 5 Sigma rules name it 2 documented commands
How csh is abused
file-write
-cEach abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for csh.
2 documented commands
file-write unprivileged, with sudo, as SUID
csh -c 'echo DATA >/path/to/output-file'IdentifyAs SUID:
csh -c 'echo DATA >/path/to/output-file' -b
None of the 2 commands CmdID reads trips a Sigma process-creation rule. These commands are 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 csh. CmdID reads the line of each that runs csh.
What detects it
mediumSuspicious Child Process of SAP NetWeaver - LinuxElastic (idea), Swachchhanda Shrawan Poudel (Nextron Systems)
mediumExecution Of Script Located In Potentially Suspicious DirectoryJoseliyo Sanchez, @Joseliyo_Jstnk