SV-253371r1210291_rule
V-253371
SRG-OS-000480-GPOS-00227
WN11-CC-000080
CAT II
10
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Device Guard >> "Turn On virtualization-based Security" to "Enabled" with "Enabled with UEFI lock" or "Enabled without lock" selected for "virtualization-based Protection of Code Integrity:".
"Enabled with UEFI lock" is preferred as more secure; however, it cannot be turned off remotely through a group policy change if there is an issue.
"Enabled without lock" will allow this to be turned off remotely while testing for issues.
Confirm virtualization-based protection of code integrity.
If there are documented operational mission needs to disable code integrity, this may be reduced to a CAT II finding.
Run "PowerShell" with elevated privileges (run as administrator).
Enter the following:
"Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard"
If "SecurityServicesRunning" does not include a value of "2" (e.g., "{1, 2}"), this is a finding.
Alternately:
Run "System Information".
Under "System Summary", verify the following:
If "Virtualization-based Security Services Running" does not list "Hypervisor enforced Code Integrity", this is a finding.
The policy settings referenced in the Fix section will configure the following registry value. However, due to hardware requirements, the registry value alone does not ensure proper function.
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeviceGuard\
Value Name: HypervisorEnforcedCodeIntegrity
Value Type: REG_DWORD
Value: 0x00000001 (1) (Enabled with UEFI lock), or 0x00000002 (2) (Enabled without lock)
V-253371
False
WN11-CC-000080
Confirm virtualization-based protection of code integrity.
If there are documented operational mission needs to disable code integrity, this may be reduced to a CAT II finding.
Run "PowerShell" with elevated privileges (run as administrator).
Enter the following:
"Get-CimInstance -ClassName Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard"
If "SecurityServicesRunning" does not include a value of "2" (e.g., "{1, 2}"), this is a finding.
Alternately:
Run "System Information".
Under "System Summary", verify the following:
If "Virtualization-based Security Services Running" does not list "Hypervisor enforced Code Integrity", this is a finding.
The policy settings referenced in the Fix section will configure the following registry value. However, due to hardware requirements, the registry value alone does not ensure proper function.
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeviceGuard\
Value Name: HypervisorEnforcedCodeIntegrity
Value Type: REG_DWORD
Value: 0x00000001 (1) (Enabled with UEFI lock), or 0x00000002 (2) (Enabled without lock)
M
5471