Microsoft Defender External Attack Surface Management (Defender EASM)

Microsoft Defender External Attack Surface Management discovers and maps the digital attack surface and provides an external view of a company’s online infrastructure.

Types of Assets Fetched

This adapter fetches the following types of assets:

• Devices
• Vulnerabilities
• SaaS Applications
• Domains and URLs
• Certificates

Parameters

1. Azure Tenant ID (required) - The Microsoft Entra ID (Azure AD) ID.

2. Azure Client ID (required) - The Application ID of the Axonius application.

3. Azure Subscription ID (required) - The Microsoft Entra ID (Azure AD) Subscription ID.

4. Azure Client Secret (required) - Specify a non-expired key generated from the new client secret.

5. Verify SSL - Select whether to verify the SSL certificate of the server against the CA database inside of Axonius. For more details, see SSL Trust & CA Settings.

6. HTTPS Proxy (optional) - Connect the adapter to a proxy instead of directly connecting it to the domain.

7. HTTPS Proxy User Name (optional) - The user name to use when connecting to the value supplied in Host Name or IP Address via the value supplied in HTTPS Proxy.

8. HTTPS Proxy Password (optional) - The password to use when connecting to the server using the HTTPS Proxy.

To learn more about common adapter connection parameters and buttons, see Adding a New Adapter Connection.

Advanced Settings

• Fetch Devices of sub type Pages from EASM Pages default: disabled - Select this option to fetch Page devices from EASM pages.
• Fetch Devices of sub type Hosts from EASM Hosts default: disabled - Select this option to fetch Host devices from EASM hosts.
• Fetch Devices of sub type IP Addresses from EASM IP Addresses default: disabled - Select this option to fetch IP addresses from EASM pages.
• Fetch URLs of sub type URLs from EASM Pages default: enabled - Select this option to fetch URLs from EASM pages.
• Fetch URLs of sub type Domains from EASM Domains default: disabled - Select this option to fetch domains from EASM domains.
• Fetch Certificate from EASM SSL Certificates default: disabled - Select this option to fetch certificates from EASM SSL certificates.

APIs

Axonius uses the Microsoft Defender EASM REST API.

Required Permissions

To connect to Microsoft Entra ID (Azure AD), you need to create a Designated Axonius application in the Microsoft Azure Portal and grant it read-only permissions. All required credentials will be given once an application is created. For more details, see Creating an application in the Microsoft Azure Portal.

To assign a Reader role to the application you use to connect to Axonius, on your Azure portal:

1. Navigate to Subscriptions.
2. Select the subscription used in the adapter configuration.
3. Select Access Control (IAM).
4. Select Add > Add Role Assignment to add a new permission.
5. Select the Reader permission and click Next.
6. On the Members screen, click Select Members.
7. Select the Axonius application and click Review + assign.

Apply the same permissions as are used on the Microsoft Entra ID (Azure AD) adapter. The required permissions are as follows:

• AuditLog.Read.All
• Directory.Read.All
• Application.Read.All

Supported From Version

Supported from Axonius version 6.0