Microsoft Defender AV must be configured to automatically take action on all detected tasks.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-213427	WNDF-AV-000003	SV-213427r823026_rule		Medium

Description
This policy setting allows Microsoft Defender configuration to automatically take action on all detected threats. The action to be taken on a particular threat is determined by the combination of the policy-defined action user-defined action and the signature-defined action. If this policy setting is enabled, Microsoft Defender does not automatically take action on the detected threats but prompts users to choose from the actions available for each threat. If this policy setting is disabled or not configured, Microsoft Defender automatically takes action on all detected threats after a nonconfigurable delay of approximately five seconds.

Description

This policy setting allows Microsoft Defender configuration to automatically take action on all detected threats. The action to be taken on a particular threat is determined by the combination of the policy-defined action user-defined action and the signature-defined action. If this policy setting is enabled, Microsoft Defender does not automatically take action on the detected threats but prompts users to choose from the actions available for each threat. If this policy setting is disabled or not configured, Microsoft Defender automatically takes action on all detected threats after a nonconfigurable delay of approximately five seconds.

STIG	Date
Microsoft Defender Antivirus Security Technical Implementation Guide	2022-04-08

Details

Check Text ( C-14652r820128_chk )
Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Turn off routine remediation" is set to "Disabled" or "Not Configured". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender Criteria: If the value "DisableRoutinelyTakingAction" 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-14652r820128_chk )

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Turn off routine remediation" is set to "Disabled" or "Not Configured".

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

Criteria: If the value "DisableRoutinelyTakingAction" 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-14650r823025_fix)
Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Turn off routine remediation" to "Disabled" or "Not Configured".