Title

System files must be monitored for unauthorized changes. (Cat II impact)

Discussion

Monitoring system files for changes against a baseline on a regular basis may help detect the possible introduction of malicious code on a system.

Check Content

Determine whether the site monitors system files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on servers for unauthorized changes against a baseline on a weekly basis. An approved and properly configured solution will contain both a list of baselines that includes all system file locations and a file comparison task that is scheduled to run at least weekly. If system files are not being monitored for unauthorized changes, this is a finding.

Fix Text

Monitor system files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on servers for unauthorized changes against a baseline on a weekly basis. This can be done with the use of various monitoring tools.

Additional Identifiers

Rule ID: SV-226248r894352_rule

Vulnerability ID: V-226248

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.