Microsoft Windows Defender Antivirus STIG: WNDF-AV-000007

Check: WNDF-AV-000007 (in versions v2 r2 through v1 r1)

Title

Windows Defender AV must be configured to enable the Automatic Exclusions feature. (Cat II impact)

Discussion

Allows an administrator to specify if Automatic Exclusions feature for Server SKUs should be turned off.

Check Content

Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Exclusions -> "Turn off Auto Exclusions" is set to "Disabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\Exclusions Criteria: If the value "DisableAutoExclusions" is REG_DWORD = 0, this is not a finding.

Fix Text

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Exclusions -> "Turn off Auto Exclusions" to "Disabled".

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CCIs

CCIs tied to check.
Number Definition
CCI-001242

The organization configures malicious code protection mechanisms to perform real-time scans of files from external sources at endpoints as the files are downloaded, opened, or executed in accordance with organizational security policy.

Controls

Controls tied to check. These are derived from the CCIs shown above.
Number Title
SI-3

Malicious Code Protection