Microsoft 365 / Microsoft Defender

Microsoft 365 / Microsoft Defender

The Dropzone AI platform integrates with Entra ID, Exchange Online, and Microsoft Defender via the Microsoft Graph API. This document describes how to set up API credentials and install them into the Dropzone platform.

Integration Overview

To enable these integrations you will perform the following actions:

• Register a new application in Microsoft Entra Admin Center

• Locate your Client ID, Tenant ID, and create a Client Secret

• Enable Dropzone Certificate Credentials

• Assign necessary API permissions to the application

• Install the credentials into your Dropzone tenant (Data Source and Alert Source)

• Select integration parameters, such as which alert types to sync

See the Microsoft Integrations page for instructions on how to register a new application, locate your Client ID and Tenant ID, and create a Client Secret.

Set Application Permissions

General instructions on how to assign API permissions to the application can be found in the Microsoft Integrations page.

MS 365/MS Defender can utilize the following APIs:

Microsoft Graph Permissions

• In the API permissions page, click "Add a permission"

• Under the Microsoft API header, select "Microsoft Graph"

• Click "Application Permissions"

Add the following permissions:

• Once done selecting all the permissions, click "Add permissions"

• Click "Grant admin consent for [mycompany.net]"

• Click "Yes"

Microsoft Cloud Apps Security Permissions

• In the API permissions page, click "Add a permission"

• Navigate to "APIs my organization uses"

• Type "Microsoft Cloud App Security" in the search bar

• Click "Microsoft Cloud App Security"

• Click "Application permissions"

Add the following permissions:

• Once done selecting all the permissions, click "Add permissions"

• Click "Grant admin consent for [mycompany.net]"

• Click "Yes"

Windows Defender ATP - Live Response

• In the API permissions page, click "Add a permission"

• Navigate to "APIs my organization uses"

• Type "WindowsDefenderATP" in the search bar

• Click "WindowsDefenderATP"

• Click "Application permissions"

Add the following permissions:

• Once done selecting all the permissions, click "Add permissions"

• Click "Grant admin consent for [mycompany.net]"

• Click "Yes"

Locate Organization ID

• Sign into Entra home as an administrator

• In the left navigation, select Manage > Custom domain names

• In the domain list you'll find one that ends in .onmicrosoft.com. Record this domain for use later in the Dropzone UI where it is called "Organization ID"

Locate Cloud Apps Information

• Go to https://security.microsoft.com/

• In the left navigation, select Settings

• Select Cloud Apps

Record the "API URL" for use later in the Dropzone UI where it is called "Portal URL".

Enable Microsoft 365/Microsoft Defender

The Alert Source integration allows Dropzone AI to pull alerts from Exchange Online and Microsoft Defender for investigation.

You'll need the following information:

To enable the Alert Source integration, do the following:

• Navigate to your Dropzone AI tenant home page e.g. https://mycompany.dropzone.app

• In the bottom left hand corner, click Settings > Integrations

• Click "Available"

• In the Search bar, search MS 365/Defender, then click "Configure"

• Under the Alert Source heading, input the Client ID, Tenant ID, and Client Secret

• Select whether you want to ingest alerts or incidents from Microsoft Defender

• If you chose to ingest alerts, select which Microsoft Defender Detection Sources you wish to allow Dropzone to investigate alerts from

• In the "Enabled Severity Levels" section, choose the severity levels of alerts you want Dropzone to investigate

• Check the box labeled "Email Threat Submissions" to enable Microsoft email alert types

• If you wish for Dropzone to use a specified mailbox for Phishing Analysis, check the box labeled "Enable Mailbox-based Phishing Analysis"

• If you wish to enable Dropzone to retrieve quarantined emails for phishing analysis, in the PowerShell API Configuration section, check the box labeled "Enable PowerShell API." Enter the Organization ID you saved earlier (ends in .onmicrosoft.com)

• In the Defender Alert and Incident Exclusions, you may further customize your MS Defender alerts by checking the boxes labeled "Prelude Security," "Custom File Exclusion," and "Title Exclusion"

• Input your desired poll interval and lookback

• Click "Test & Save" to finish

You should begin ingesting alerts immediately.

If you have any errors engage your Dropzone AI support representative.