File Integration Monitoring (FIM) security audit for Windows systems

When performing a File Integration Monitoring security audit for Windows systems, it’s important to focus on various files and components to ensure the security and integrity of the system. Here’s a list of key files and areas to audit:

1. File System Security Settings:Audit Policies: Review and audit the security settings related to file access auditing. This can be configured using Group Policy or local security policy settings.
2. Event Logs:Security Event Log: Examine the Security event log for any suspicious or unauthorized file access, modifications, or deletions.
3. File Access and Modification Logs:Windows File Auditing: Enable file and folder auditing on critical directories to monitor access and modifications. Use the Security log or specialized audit logs for this purpose.
4. File Integrity Monitoring Tools:SIEM (Security Information and Event Management) Systems: Monitor alerts generated by SIEM systems for any unexpected file changes.
5. Third-party File Integrity Monitoring Tools: Deploy and review logs generated by dedicated file integrity monitoring tools to identify unauthorized changes to files.
6. System and Security Configuration Files:Security Configuration Baselines: Audit the configuration files that define security baselines for the system. Ensure that they are properly configured and haven’t been tampered with.
7. Antivirus and Antimalware Logs:Antivirus Logs: Check for any detected threats or suspicious activities in the logs of your antivirus and antimalware solutions.
8. Access Control Lists (ACLs):File and Folder Permissions: Review and audit the permissions and ACLs on critical files and folders. Ensure that only authorized users have the necessary access.
9. Registry Settings:Registry Security Settings: Review the registry settings related to file access and permissions. Unauthorized changes to these settings can have a significant impact on system security.
10. Executable Files:System Executables: Monitor and audit critical system executables for unauthorized modifications. Ensure that the digital signatures of these files are valid.
11. Backup and Restore Logs:Backup Logs: Check logs related to system backups to ensure that they are running successfully and that backup files are secure.

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