18.9.48.1 Ensure 'Allow auditing events in Microsoft Defender Application Guard' is set to 'Enabled'

Information

This policy setting allows you to decide whether auditing events can be collected from Microsoft Defender Application Guard.

The recommended state for this setting is: Enabled.

Note: Microsoft Defender Application Guard requires a 64-bit version of Windows and a CPU supporting hardware-assisted CPU virtualization (Intel VT-x or AMD-V). This feature is not officially supported on virtual hardware, although it can work on VMs (especially for testing) provided that the hardware-assisted CPU virtualization feature is exposed by the host to the guest VM.

More information on system requirements for this feature can be found at System requirements for Microsoft Defender Application Guard (Windows 10) | Microsoft Docs

Note #2: Credential Guard and Device Guard are not currently supported when using Azure IaaS VMs.

Rationale:

Auditing of Microsoft Defender Application Guard events may be useful when investigating a security incident.

Impact:

Microsoft Defender Application Guard will inherit its auditing policies from Microsoft Edge and start to audit system events specifically for Microsoft Defender Application Guard. Collected logs are available for review on Microsoft Edge, outside of Application Guard.

Solution

To establish the recommended configuration via GP, set the following UI path to Enabled:

Computer Configuration\Policies\Administrative Templates\Windows Components\Microsoft Defender Application Guard\Allow auditing events in Microsoft Defender Application Guard

Note: This Group Policy path may not exist by default. It is provided by the Group Policy template AppHVSI.admx/adml that is included with the Microsoft Windows 10 Release 1709 Administrative Templates (or newer).
Note #2: In older Microsoft Windows Administrative Templates, this setting was initially named Allow auditing events in Windows Defender Application Guard, but it was renamed to Allow auditing events in Microsoft Defender Application Guard starting with the Windows 10 Release 2004 Administrative Templates.

Default Value:

Disabled. (Audit event logs aren't collected for Microsoft Defender Application Guard.)

See Also

https://workbench.cisecurity.org/files/3719

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-2, 800-53|AU-7, 800-53|AU-12, CSCv7|6.2

Plugin: Windows

Control ID: 9e01c621cfeb36afcbc7e4fde8cbb983acb1bbddbc3390cb173356d9836fa3bc