Linux Crontab Enumeration — Detection Rule
The following analytic detects the use of the crontab command with the list parameter (-l) to enumerate scheduled tasks configured in the invoking user's crontab on Linux systems. Adversaries may use this information to identify persistence mechanisms, scheduled execution, or potential privilege escalation opportunities. The use of crontab -l is also common administrative activity and may require tuning based on the executing user, parent process, and environment.