IntuneAttackSurfaceReductionRulesPolicyWindows10ConfigManager

Parameters

Parameter	Attribute	DataType	Description	Allowed Values
Identity	Write	String	Identity of the endpoint protection attack surface protection rules policy for Windows 10.
DisplayName	Key	String	Display name of the endpoint protection attack surface protection rules policy for Windows 10.
Description	Write	String	Description of the endpoint protection attack surface protection rules policy for Windows 10.
Assignments	Write	MSFT_DeviceManagementConfigurationPolicyAssignments[]	Assignments of the endpoint protection attack surface protection rules policy for Windows 10.
AttackSurfaceReductionOnlyExclusions	Write	StringArray[]	Exclude files and paths from attack surface reduction rules
BlockAbuseOfExploitedVulnerableSignedDrivers	Write	String	This rule prevents an application from writing a vulnerable signed driver to disk.	off, block, audit, warn
BlockAdobeReaderFromCreatingChildProcesses	Write	String	This rule prevents attacks by blocking Adobe Reader from creating processes.	off, block, audit, warn
BlockAllOfficeApplicationsFromCreatingChildProcesses	Write	String	This rule blocks Office apps from creating child processes. Office apps include Word, Excel, PowerPoint, OneNote, and Access.	off, block, audit, warn
BlockCredentialStealingFromWindowsLocalSecurityAuthoritySubsystem	Write	String	This rule helps prevent credential stealing by locking down Local Security Authority Subsystem Service (LSASS).	off, block, audit, warn
BlockExecutableContentFromEmailClientAndWebmail	Write	String	This rule blocks the following file types from launching from email opened within the Microsoft Outlook application, or Outlook.com and other popular webmail providers.	off, block, audit, warn
BlockExecutableFilesRunningUnlessTheyMeetPrevalenceAgeTrustedListCriterion	Write	String	This rule blocks executable files that don't meet a prevalence, age, or trusted list criteria, such as .exe, .dll, or .scr, from launching.	off, block, audit, warn
BlockExecutionOfPotentiallyObfuscatedScripts	Write	String	This rule detects suspicious properties within an obfuscated script.	off, block, audit, warn
BlockJavaScriptOrVBScriptFromLaunchingDownloadedExecutableContent	Write	String	This rule prevents scripts from launching potentially malicious downloaded content.	off, block, audit, warn
BlockOfficeApplicationsFromCreatingExecutableContent	Write	String	This rule prevents Office apps, including Word, Excel, and PowerPoint, from creating potentially malicious executable content, by blocking malicious code from being written to disk.	off, block, audit, warn
BlockOfficeApplicationsFromInjectingCodeIntoOtherProcesses	Write	String	This rule blocks code injection attempts from Office apps into other processes.	off, block, audit, warn
BlockOfficeCommunicationAppFromCreatingChildProcesses	Write	String	This rule prevents Outlook from creating child processes, while still allowing legitimate Outlook functions.	off, block, audit, warn
BlockPersistenceThroughWMIEventSubscription	Write	String	This rule prevents malware from abusing WMI to attain persistence on a device.	off, block, audit, warn
BlockProcessCreationsFromPSExecAndWMICommands	Write	String	This rule blocks processes created through PsExec and WMI from running.	off, block, audit, warn
BlockUntrustedUnsignedProcessesThatRunFromUSB	Write	String	With this rule, admins can prevent unsigned or untrusted executable files from running from USB removable drives, including SD cards.	off, block, audit, warn
BlockWin32APICallsFromOfficeMacros	Write	String	This rule prevents VBA macros from calling Win32 APIs.	off, block, audit, warn
UseAdvancedProtectionAgainstRansomware	Write	String	This rule provides an extra layer of protection against ransomware.	off, block, audit, warn
ControlledFolderAccessProtectedFolders	Write	StringArray[]	List of additional folders that need to be protected
ControlledFolderAccessAllowedApplications	Write	StringArray[]	List of apps that have access to protected folders.
EnableControlledFolderAccess	Write	String	This rule enable Controlled folder access which protects your data by checking apps against a list of known, trusted apps.values 0:disable, 1:enable, 2:audit	0, 1, 2
Ensure	Write	String	Present ensures the policy exists, absent ensures it is removed	Present, Absent
Credential	Write	PSCredential	Credentials of the Intune Admin
ApplicationId	Write	String	Id of the Azure Active Directory application to authenticate with.
TenantId	Write	String	Name of the Azure Active Directory tenant used for authentication. Format contoso.onmicrosoft.com
ApplicationSecret	Write	PSCredential	Secret of the Azure Active Directory tenant used for authentication.
CertificateThumbprint	Write	String	Thumbprint of the Azure Active Directory application's authentication certificate to use for authentication.
ManagedIdentity	Write	Boolean	Managed ID being used for authentication.

MSFT_DeviceManagementConfigurationPolicyAssignments

Parameters

Parameter	Attribute	DataType	Description	Allowed Values
dataType	Write	String	The type of the target assignment.	#microsoft.graph.groupAssignmentTarget, #microsoft.graph.allLicensedUsersAssignmentTarget, #microsoft.graph.allDevicesAssignmentTarget, #microsoft.graph.exclusionGroupAssignmentTarget, #microsoft.graph.configurationManagerCollectionAssignmentTarget
deviceAndAppManagementAssignmentFilterType	Write	String	The type of filter of the target assignment i.e. Exclude or Include. Possible values are:none, include, exclude.	none, include, exclude
deviceAndAppManagementAssignmentFilterId	Write	String	The Id of the filter for the target assignment.
groupId	Write	String	The group Id that is the target of the assignment.
groupDisplayName	Write	String	The group Display Name that is the target of the assignment.
collectionId	Write	String	The collection Id that is the target of the assignment.(ConfigMgr)

Description

This resource configures an Intune Endpoint Protection Attack Surface Reduction Rules policy for a Windows 10 Device for Configuration Manager. This policy setting enables setting the state (Block/Audit/Off/Warn) for each attack surface reduction (ASR) rule. Each ASR rule listed can be set to one of the following states (Block/Audit/Off/Warn). The ASR rule ID and state should be added under the Options for this setting. Each entry must be listed as a name value pair. The name defines a valid ASR rule ID, while the value contains the status ID indicating the status of the rule.

For more information about ASR rule ID and status ID, see Enable Attack Surface Reduction: https://docs.microsoft.com/en-us/windows/threat-protection/windows-defender-exploit-guard/enable-attack-surface-reduction.

Permissions

Microsoft Graph

To authenticate with the Microsoft Graph API, this resource required the following permissions:

Delegated permissions

• Read

  • DeviceManagementConfiguration.Read.All

• Update

  • DeviceManagementConfiguration.ReadWrite.All

Application permissions

• Read

  • DeviceManagementConfiguration.Read.All

• Update

  • DeviceManagementConfiguration.ReadWrite.All

Examples

Example 1

This example is used to test new resources and showcase the usage of new resources being worked on. It is not meant to use as a production baseline.

Configuration Example
{
    param(
        [Parameter(Mandatory = $true)]
        [PSCredential]
        $Credscredential
    )
    Import-DscResource -ModuleName Microsoft365DSC

    node localhost
    {
        IntuneAttackSurfaceReductionRulesPolicyWindows10ConfigManager 'myASRReductionRules'
        {
            DisplayName = 'asr ConfigMgr'
            blockadobereaderfromcreatingchildprocesses = "block";
            Description = 'My revised description'
            Ensure      = 'Present'
            Credential  = $Credscredential
        }
    }
}

Example 2

This example is used to test new resources and showcase the usage of new resources being worked on. It is not meant to use as a production baseline.

Configuration Example
{
    param(
        [Parameter(Mandatory = $true)]
        [PSCredential]
        $Credscredential
    )
    Import-DscResource -ModuleName Microsoft365DSC

    node localhost
    {
        IntuneAttackSurfaceReductionRulesPolicyWindows10ConfigManager 'myASRReductionRules'
        {
            DisplayName = 'asr ConfigMgr'
            blockadobereaderfromcreatingchildprocesses = "audit"; # Updated Property
            Description = 'My revised description'
            Ensure      = 'Present'
            Credential  = $Credscredential
        }
    }
}

Example 3

This example is used to test new resources and showcase the usage of new resources being worked on. It is not meant to use as a production baseline.

Configuration Example
{
    param(
        [Parameter(Mandatory = $true)]
        [PSCredential]
        $Credscredential
    )
    Import-DscResource -ModuleName Microsoft365DSC

    node localhost
    {
        IntuneAttackSurfaceReductionRulesPolicyWindows10ConfigManager 'myASRReductionRules'
        {
            DisplayName = 'asr ConfigMgr'
            Ensure      = 'Absent'
            Credential  = $Credscredential
        }
    }
}