IT Forensics · Linux
Forensic analysis of auditd logs – Evaluating rule-based system monitoring
The Linux Audit Framework, which includes the auditd daemon, logs security-related system calls, file accesses and user activities at the kernel level on a rule-based basis. It is frequently used in environments with stringent compliance requirements.
The usefulness of auditd logs depends largely on the configured rule set. Without the appropriate rules, relevant events may not be logged at all.
Why LanCologne?
Since its foundation, LanCologne has specialised in professional IT forensics. Our staff have decades of experience in the field of information technology and assist companies, solicitors, private individuals and, on a regular basis, the courts in the technical investigation of complex digital matters.
The examination is, as a matter of principle, carried out exclusively on a forensic copy, a forensic image or a data source captured in a technically equivalent manner that preserves the integrity of the evidence. The original evidence remains unchanged and is stored in a manner that preserves its integrity.
Our services
We systematically analyse existing auditd logs, check the underlying rule configuration and assign logged events to the relevant users, processes and files.
Typical areas of application
This is how an auditd analysis works
Once the backup has been completed, the active audit rule configuration is first analysed to determine the actual scope of logging. Relevant audit events are then extracted, assigned to the users and processes involved, and correlated with other system artefacts.
Why is the auditd analysis relevant from a forensic perspective?
auditd can log security-related events at the kernel level that go beyond traditional application logs, such as targeted attempts to access protected files.
As logging depends on the relevant rule configuration, the absence of an event cannot automatically be taken as proof that it did not occur. This limitation is clearly stated in every evaluation.
Frequently Asked Questions
LanCologne – Linux Forensics Cologne
Do you require a professional forensic investigation into „forensic analysis of auditd logs"? LanCologne can assist you with the legally admissible preservation of digital evidence and the transparent analysis of relevant Linux artefacts.
Related to this topic
- Forensic analysis of syslog artefacts – analysing traditional text logs
- Forensic analysis of rsyslog configuration – correctly assessing the scope of logging
- Systematically analysing the /var/log directory from a forensic perspective – comprehensively capturing the central log collection
- Forensic analysis of the kernel ring buffer (dmesg) – Reconstructing early system events