V-240536

Discussion

Auditing file deletions will create an audit trail for files that are removed from the system. The audit trail could aid in system troubleshooting, as well as detecting malicious processes that attempt to delete log files to conceal their presence.

Check Content

To determine if the system is configured to audit calls to the "unlink" system call, run the following command: 

# auditctl -l | grep syscall | grep unlink | grep -v unlinkat

If the system is configured to audit this activity, it will return several lines.

If it does not, this is a finding.

To determine if the system is configured to audit calls to the "unlinkat" system call, run the following command: 

# auditctl -l | grep syscall | grep unlinkat

If the system is configured to audit this activity, it will return several lines.

If it does not, this is a finding.

To determine if the system is configured to audit calls to the "rename" system call, run the following command: 

# auditctl -l | grep syscall | grep rename | grep -v renameat

If the system is configured to audit this activity, it will return several lines.

If it does not, this is a finding.

To determine if the system is configured to audit calls to the "renameat" system call, run the following command: 

# auditctl -l | grep syscall | grep renameat

If the system is configured to audit this activity, it will return several lines.

If it does not, this is a finding.