Configure Endpoint Isolation in Nebula

Malwarebytes Endpoint Detection and Response includes Endpoint Isolation, which temporarily stops threats from spreading between endpoints by restricting their communication or access. An isolated endpoint can still communicate with the console and run Malwarebytes processes. Super Admins and Administrators can isolate endpoints protected by policies with the Endpoint Isolation feature enabled.

For Endpoint Isolation usage requirements, see Minimum requirements for Nebula.

Types of isolation

There are three different isolation types. They may be enabled separately or combined to increase isolation. The three isolation types are:

• Network Isolation: Prevent the endpoint from communicating with other devices on your network.
• Process Isolation: Restrict which processes can run on the endpoint and prevent processes from interacting.
• Desktop Isolation (Windows only): Prevent end users from accessing the endpoint.

With Process Isolation enabled, only Privileged Processes are allowed to launch on the endpoint. Privileged Processes belong to one of these types:

• Predefined (hardcoded) processes: Currently there are two predefined processes: CONSENT.exe, necessary to execute UAC elevated processes; and CSRSS.EXE which is a critical system process.
• Processes digitally signed by Malwarebytes: These are allowed to run unrestricted on isolated endpoints.
• Processes spawned by other Privileged Processes: A process with a privileged parent process is also privileged. Privileged child process may create more privileged child processes.

Isolate endpoints

Before you can isolate an endpoint, you must first enable the Endpoint Isolation feature in the policy settings. This is necessary to install plugins for the Endpoint Agent. When the scan finishes, you can isolate the endpoint.

To enable Endpoint Isolation, follow these steps: 

1. On the left navigation menu, go to Configure > Policies.
2. Click New or select an existing policy.
3. Select the Endpoint Detection and Response tab.
4. Locate Enable endpoint isolation to allow locking/unlocking of endpoints and check the box for your Windows and/or Mac endpoints.

To isolate an endpoint:

1. On the left navigation menu, go to Manage > Endpoints, then select an endpoint to isolate. 
2. Click the Actions menu on the top right. Select Isolate endpoint(s).
3. Confirm the types of isolation you want, and click YES. All isolation types are enabled by default.
   

Change isolation type

To change the isolation type applied to an endpoint, you must remove the isolation and then apply the new isolation types.

Remove endpoint isolation

You can remove endpoints from isolation on the Endpoints screen. Removing an endpoint from isolation turns off all isolation types.

1. On the left navigation menu, go to Manage > Endpoints, then select an isolated endpoint. 
2. Click the Actions menu and select Remove Isolation.
3. The endpoint will be removed from isolation and automatically reboot. You may lose any unsaved work.
   

Customize endpoint isolation alerts

You can customize the message displayed on endpoints when they are isolated. This is optional, and is changed at the policy level.

1. On the left navigation menu, go to Configure > Policies.
2. Click New or select an existing policy.
3. Select the Endpoint Detection and Response tab.
4. Locate Enable endpoint isolation to allow locking/unlocking of endpoints, then select Windows isolation settings.
5. Enter custom text in the Isolation Title and Isolation message fields, or click Use Default Title/Message to restore the defaults.
6. You may upload a BMP image to display along with the message. Drag an image file onto the upload area or click CHOOSE A FILE to select an image.
   Note: Maximum file size is 2 MB and must be a native BMP file to display properly.
7. Click SAVE to save changes. The new isolation message will be shown for future endpoint isolations. It does not affect currently-isolated endpoints.

Return to the Malwarebytes Nebula Administrator Guide.