Detects the use of the insmod binary to load a Linux kernel object file. Threat actors can use this binary, given they have root privileges, to load a rootkit on a system providing them with complete control and the ability to hide from security products. Manually loading a kernel module in this manner should not be at all common and can indicate suspcious or malicious behavior.
Rule type: eql
Risk score: 85
Runs every: 5 minutes
Maximum alerts per execution: 100
- Threat Detection
- Rootkit Added (Elastic Stack release): 8.4.0
Last modified (Elastic Stack release): 8.4.0
Rule authors: Elastic
Rule license: Elastic License v2
process where event.type == "start" and process.executable : "/usr/sbin/insmod" and process.args : "*.ko"