Microsoft Windows Defender Antivirus STIG: WNDF-AV-000025
WNDF-AV-000025 (in versions v2 r2 through v1 r1)
Windows Defender AV must be configured to scan removable drives. (Cat II impact)
This policy setting allows you to manage whether or not to scan for malicious software and unwanted software in the contents of removable drives such as USB flash drives when running a full scan. If you enable this setting removable drives will be scanned during any type of scan. If you disable or do not configure this setting removable drives will not be scanned during a full scan. Removable drives may still be scanned during quick scan and custom scan.
Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Scan -> "Scan removable drives" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\Scan Criteria: If the value "DisableRemovableDriveScanning" is REG_DWORD = 0, this is not a finding.
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Scan -> "Scan removable drives" to "Enabled".
The organization checks media containing diagnostic and test programs for malicious code before the media are used in the information system.