Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Windows Defender Exploit Guard -> Attack Surface Reduction -> "Configure Attack Surface Reduction rules" to "Enabled”. HKLM\Software\Policies\Microsoft\Windows Defender\Windows Defender Exploit Guard\ASR\RulesĬriteria: If the value “5BEB7EFE-FD9A-4556-801D-275E5FFC04CC” is REG_SZ = 1, this is not a finding. Essentially, Windows users of the Microsoft Defender for individuals app are just getting this same Windows Security antivirus protection that comes for free in Windows systems. Procedure: Use the Windows Registry Editor to navigate to the following key: Verify the rule ID in the Value name column and the desired state in the Value column is set as follows: Disable Windows Defender Once this policy is enabled, Windows Defender should remain disabled at all times. From the Turn off Microsoft Defender Antivirus policy, change the toggle to Enabled and click Apply to save the changes. Verify the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender Antivirus -> Windows Defender Exploit Guard -> Attack Surface Reduction -> "Configure Attack Surface Reduction rules" is set to "Enabled”. Access the Turn Off Windows Defender Antivirus Policy When you see it, double-click on it to open it. This setting is applicable starting with v1709 of Windows 10, it is NA for prior versions. Microsoft Windows Defender Antivirus Security Technical Implementation Guideĭetails Check Text ( C-14686r314692_chk ) It uses the AntiMalwareScanInterface (AMSI) to determine if a script is potentially obfuscated, and then blocks such a script, or blocks scripts when an attempt is made to access them. This rule prevents scripts that appear to be obfuscated from running. Malware and other threats can attempt to obfuscate or hide their malicious code in some script files.
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