Using microsoft intune for windows 1011/29/2023 For Profile type, select Endpoint protection. To create a new one, select Create profile and enter information for this profile. Choose an existing endpoint protection profile or create a new one. The following procedures for enabling ASR rules include instructions for how to exclude files and folders. This section provides configuration details for the following configuration methods: Only the configurations for conflicting settings are held back.When two or more policies have conflicting settings, the conflicting settings aren't added to the combined policy, while settings that don't conflict are added to the superset policy that applies to a device.Settings that don't have conflicts are added to a superset of policy for the device.Endpoint security > Security baselines > Microsoft Defender ATP Baseline > Attack Surface Reduction Rules.Endpoint security > Attack surface reduction policy > Attack surface reduction rules.Devices > Configuration profiles > Endpoint protection profile > Microsoft Defender Exploit Guard > Attack Surface Reduction.Attack surface reduction rules from the following profiles are evaluated for each device to which the rules apply:. Attack surface reduction rule merge behavior is as follows: Previously, if two policies included conflicts for a single setting, both policies were flagged as being in conflict, and no settings from either profile would be deployed. Only the settings that aren't in conflict are merged, while those that are in conflict aren't added to the superset of rules. If a conflicting policy is applied via MDM and GP, the setting applied from MDM takes precedence.Īttack surface reduction rules for managed devices now support behavior for merger of settings from different policies, to create a superset of policy for each device. Exclusions can be added based on certificate and file hashes, by allowing specified Defender for Endpoint file and certificate indicators.See Configure ASR rules per-rule exclusions Using Intune, it is possible to configure an exclusion for a specific ASR rule. When deployed through Group Policy or PowerShell, exclusions apply to all ASR rules.See Use wildcards in the file name and folder path or extension exclusion lists Exclusion paths can use environment variables and wildcards.Exclusions are typically based on individual files or folders (using folder paths or the full path of the file to be excluded).For example, if you add an exclusion for an update service that is already running, the update service continues to trigger events until the service is stopped and restarted. If ASR rules are detecting files that you believe shouldn't be detected, you should use audit mode first to test the rule.Īn exclusion is applied only when the excluded application or service starts. Excluded files will be allowed to run, and no report or event will be recorded. However, if you have another license, such as Windows Professional or Windows E3 that doesn't include advanced monitoring and reporting capabilities, you can develop your own monitoring and reporting tools on top of the events that are generated at each endpoint when ASR rules are triggered (for example, Event Forwarding).Įxcluding files or folders can severely reduce the protection provided by ASR rules. We recommend using ASR rules with a Windows E5 license (or similar licensing SKU) to take advantage of the advanced monitoring and reporting capabilities available in Microsoft Defender for Endpoint (Defender for Endpoint). Warn: Enable the ASR rule but allow the end user to bypass the block.Audit: Evaluate how the ASR rule would impact your organization if enabled.Not configured | Disabled: Disable the ASR rule.These advanced capabilities aren't available with an E3 license, but you can still use Event Viewer to review attack surface reduction rule events.Įach ASR rule contains one of four settings: Cloud-Delivery Protection on (some rules require that)Īlthough attack surface reduction rules don't require a Windows E5 license, with a Windows E5 license, you get advanced management capabilities including monitoring, analytics, and workflows available in Defender for Endpoint, as well as reporting and configuration capabilities in the Microsoft 365 Defender portal.Microsoft Defender Antivirus as primary AV (real-time protection on).To use the entire feature-set of attack surface reduction rules, you need: Windows Server, version 1803 (Semi-Annual Channel) or later.Windows 10 Enterprise, version 1709 or later.You can set attack surface reduction rules for devices that are running any of the following editions and versions of Windows: RequirementsĪttack surface reduction features across Windows versions Want to experience Defender for Endpoint? Sign up for a free trial.Īttack surface reduction rules (ASR rules) help prevent actions that malware often abuses to compromise devices and networks.
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