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InformationalSplunk security contentTeoderick Contreras +1

Linux Auditd Insert Kernel Module Using Insmod Utility

The following analytic detects the insertion of a Linux kernel module using the insmod utility. It leverages data from Linux Auditd, focusing on process execution logs that include process names and command-line…

Description

The following analytic detects the insertion of a Linux kernel module using the insmod utility. It leverages data from Linux Auditd, focusing on process execution logs that include process names and command-line details. This activity is significant as it may indicate the installation of a rootkit or malicious kernel module, potentially allowing an attacker to gain elevated privileges and bypass security detections. If confirmed malicious, this could lead to unauthorized code execution, persistent access, and severe compromise of the affected system.

Detection logic

Detection requirements

Platform
LinuxmacOS

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
linux_auditd_syscall

Known benign triggers

  • Administrator or network operator can execute this command. Please update the filter macros to remove false positives.

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