Identifier / Programs / Linux and Unix
choom
Display and change the adjust out-of-memory killer score. tldr-pages
GTFOBins shell 1 ATT&CK technique 1 documented command
How choom is abused
shell T1059.004 Command and Scripting Interpreter: Unix Shell
-nEach abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for choom.
1 documented command
The command the identifier reads trips no Sigma process-creation rule. This command is 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 choom. The identifier reads the line that runs choom.
What detects it
Everyday use
Display the OOM-killer score of the process with a specific ID
choom --pid process_idIdentifyChange the adjust OOM-killer score of a specific process
choom --pid process_id --adjust -1000..+1000IdentifyRun a command with a specific adjust OOM-killer score
choom --adjust -1000..+1000 command argument1 argument2 ...IdentifyNone of the 3 examples the identifier reads matches GTFOBins abuse or trips a Sigma process-creation rule.