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V-278674

CAT II (Medium)

Microsoft Defender AV must enable EDR in block mode.

Rule ID

SV-278674r1190763_rule

STIG

Microsoft Defender Antivirus Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-001170

Discussion

EDR in block mode allows Microsoft Defender Antivirus to take actions on post-breach, behavioral EDR detections. EDR in block mode is integrated with threat and vulnerability management capabilities.

Check Content

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Features >> Enable EDR in block mode is set to "Enabled"; otherwise, this is a finding.

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

Criteria: If the value "PassiveRemediation" is REG_DWORD = 1, this is not a finding.

If the value is 0, this is a finding.

Fix Text

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Features >> Enable EDR in block mode to "Enabled".