Windows Defender AV must be configured to not allow override of monitoring for incoming and outgoing file activity.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75213	WNDF-AV-000014	SV-89893r2_rule		Medium

Description
This policy setting configures a local override for the configuration of monitoring for incoming and outgoing file activity. This setting can only be set by Group Policy. If you enable this setting the local preference setting will take priority over Group Policy. If you disable or do not configure this setting Group Policy will take priority over the local preference setting.

STIG	Date
MS Windows Defender Antivirus Security Technical Implementation Guide	2019-06-24

Details

Check Text ( C-75005r3_chk )
Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Real-time Protection -> "Configure local setting override for monitoring for incoming and outgoing file activity" is set to "Disabled" or "Not Configure". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection Criteria: If the value "LocalSettingOverrideRealtimeScanDirection" is REG_DWORD = 0, this is not a finding. If the value does not exist, this is not a finding. If the value is 1, this is a finding.

Check Text ( C-75005r3_chk )

Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Real-time Protection -> "Configure local setting override for monitoring for incoming and outgoing file activity" is set to "Disabled" or "Not Configure".

Procedure: Use the Windows Registry Editor to navigate to the following key:
HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection

Criteria: If the value "LocalSettingOverrideRealtimeScanDirection" is REG_DWORD = 0, this is not a finding.

If the value does not exist, this is not a finding.

If the value is 1, this is a finding.

Fix Text (F-81823r2_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Real-time Protection -> "Configure local setting override for monitoring for incoming and outgoing file activity" to "Disabled" or "Not Configured".