Control: 3.1.3.5 Ensure that 'File Integrity Monitoring' component status is set to 'On'

Description

File Integrity Monitoring (FIM) is a feature that monitors critical system files in Windows or Linux for potential signs of attack or compromise.

FIM provides a detection mechanism for compromised files. When FIM is enabled, critical system files are monitored for changes that might indicate a threat actor is attempting to modify system files for lateral compromise within a host operating system.

Remediation

From Azure Portal

1. From the Azure Portal Home page, select Microsoft Defender for Cloud.
2. Under Management select Environment Settings.
3. Select a subscription.
4. Under Settings > Defender Plans, click Settings & monitoring.
5. Under the Component column, locate the row for File Integrity Monitoring.
6. Select On.
7. Click Continue in the top left.

Repeat the above for any additional subscriptions.

Default Value

By default, File Integrity Monitoring is Off.