Title

The system must notify antivirus when file attachments are opened. (Cat II impact)

Discussion

Attaching malicious files is a known avenue of attack. This setting configures the system to notify antivirus programs when a user opens a file attachment.

Check Content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\Attachments\ Value Name: ScanWithAntiVirus Type: REG_DWORD Value: 3

Fix Text

Configure the policy value for User Configuration -> Administrative Templates -> Windows Components -> Attachment Manager -> "Notify antivirus programs when opening attachments" to "Enabled".

Additional Identifiers

Rule ID: SV-225542r569185_rule

Vulnerability ID: V-225542

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.