Adversaries may disable or modify the Linux Audit system to hide malicious activity and avoid detection. Linux admins use the Linux Audit system to track security-relevant information on a system. The Linux Audit system operates at the kernel-level and maintains event logs on application and system activity such as process, network, file, and login events based on pre-configured rules.
Often referred to as auditd, this is the name of the daemon used to write events to disk and is governed by the parameters set in the audit.conf configuration file. Two primary ways to configure the log generation rules are through the command line auditctl utility and the file /etc/audit/audit.rules, containing a sequence of auditctl commands loaded at boot time.[1],[2]
With root privileges, adversaries may be able to ensure their activity is not logged through disabling the Audit system service, editing the configuration/rule files, or by hooking the Audit system library functions. Using the command line, adversaries can disable the Audit system service through killing processes associated with auditd daemon or use systemctl to stop the Audit service. Adversaries can also hook Audit system functions to disable logging or modify the rules contained in the /etc/audit/audit.rules or audit.conf files to ignore malicious activity.[3]
References
- IzySec. (2022, January 26). Linux auditd for Threat Detection. Retrieved September 29, 2023.
- Red Hat. (n.d.). Retrieved April 15, 2026.
- M.Léveillé, M.. (2014, February 21). An In-depth Analysis of Linux/Ebury. Retrieved April 19, 2019.
Linkede sager
| Linktype | Sag |
|---|---|
| is related to | Techniques |
| is blocked by | Detection Strategy for Disable or Modify Linux Audit System Log |
| is blocked by | User Account Management |
| is blocked by | Audit |
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