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Configure Cloud Storage Scanning for Google Drive in Nebula

Cloud Storage Scanning supports scanning for malicious files in your Google Workspace. Configure a continuous or scheduled scan to check for any malicious files currently in your users' Google Drive folders.

The following scan frequencies are available:

  • On-demand: An on-demand scan of your cloud storage folders. 
  • Daily: A scheduled scan that runs daily at the specified time. 
  • Weekly: A scheduled scan that runs on certain days of the week at the specified time.
  • Monthly: A scheduled scan that runs on a certain day of the month at the specified time.
  • Continuous: A continuous scan that checks for new and updated files. Check Include existing files to initiate a scan on all files before monitoring for changes to them. 

For more information, see Should I run a scheduled scan, continuous scan, or a combination of both. 

Nebula Requirements

  • The Nebula Super Admin or Administrator must be a Google Workspace Super Admin.

Google Workspace Configuration

A Cloud Storage Scanning app must be created in Google Workspace before creating the configuration in Nebula.

Setup Service Account

  1. Create a project. For more information, see Creating a project. 
  2. Create a service account. For more information, see Create a service account. Note: No IAM roles are required for the service account. 
  3. Record the service account's OAuth 2 Client ID value. You will need this for a later step.
  4. Create a service account key and save it as JSON. For more information, see Create a service account key. 
  5. Enable the Admin SDK API and Google Drive API for the service account. For more information, see Enabling an API. 

Assign Domain-Wide Delegation to Service Account

  1. Using the OAuth 2 Client ID previously captured, assign Domain-Wide delegation to your service account. For more information, see Control API access with domain-wide delegation.
  2. Add the following OAuth scopes: 
    https://www.googleapis.com/auth/admin.directory.user.readonly
    https://www.googleapis.com/auth/admin.directory.domain.readonly
    https://www.googleapis.com/auth/drive
    https://www.googleapis.com/auth/drive.file
    https://www.googleapis.com/auth/drive.readonly
    https://www.googleapis.com/auth/drive.metadata.readonly

Assign roles to service account

  1. Create a custom role. For more information, see Create, edit, and delete custom admin roles.
    • Assign the following privileges to the role:
      • Admin console privileges
        • Organizational Units
          • Read
        • Users
          • Read
        • Domain Settings
      • Admin API privileges
        • Organizational Units
          • Read
        • Users
          • Read
        • Billing Management
          • Billing Read
        • Domain Management
  2. Assign the custom role to the service account. For more information, see Assign a role to a service account.

Nebula Configuration

  1. On the left navigation menu, go to Configure > Cloud Storage Scans.
  2. In the top-right, click Add a Scan.
  3. Enter a name for the scan configuration.
  4. Select Google Drive and upload the service account key JSON key previously generated. 
  5. Under Customer Id, enter your Customer Id. For more information on locating your Customer Id, see Find your customer ID.
  6. Click Connect to Provider.
  7. In the Items to scan tab, select which users or folders to scan.
  8. In the Quarantine tab, toggle on Enable Quarantine to allow Cloud Storage Scanning to automatically quarantine malicious files.
  9. Select a user for the quarantine folder. A folder that contains all quarantined objects from this scan configuration is automatically created in the selected user's directory. 
  10. Select the default or customize the tombstone file. A tombstone file is created and replaces the original file when a file is quarantined. It is designed to provide information or instructions for users.
  11. In the Scan frequency tab, select a scan frequency.
    Note: Scheduled scans run in Coordinated Universal Time (UTC).
  12. In the top right, click Save.
    Note: Once a scan has been saved, it cannot be modified. Delete the existing scan and create a new one if changes are required.

Return to Malwarebytes Cloud Storage Scanning guide.

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