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Microsoft

As discussed in my two previous posts, Azure Sentinel provides a variety of methods for importing threat intelligence directly into the ThreatIntelligenceIndicator Logs table where it can be used to power Analytics, Workbooks, Hunting, and other experiences.

 

 

However, Azure Sentinel also allows you to leverage massive repositories of external intelligence data as enrichment sources to enhance the triage and investigation experience of security incidents. Using the built-in automation capabilities of Azure Sentinel you can take any incident created through Azure Sentinel analytics rules, and retrieve additional context about the entities from third party sources, and make this context readily available to your security operations personnel to aid triage and investigation.

 

Today, we are announcing the availability of the RiskIQ Intelligence Connector for Azure Sentinel which allows you to tap into petabytes of external threat intelligence from RiskIQ's Internet Intelligence Graph. Incidents can be enriched automatically using Azure Sentinel Playbooks, saving time and resources for your security responders. This blog will walk you through the setup, configuration, and show you how the rich context from the new RiskIQ Intelligence Connector playbooks is surfaced in Azure Sentinel security incidents.

 

Installation

Each RiskIQ enrichment playbook leverages one or more RiskIQ Security Intelligence Service APIs to provide up to the minute threat and contextual information. To learn more about the service and request a trial key, see the API documentation.

 

The set of RiskIQ Intelligence Connector playbooks are located in the Azure Sentinel GitHub repository.

 

In this blog we'll use the Enrich-SentinelIncident-RiskIQ-IP-Passive-DNS playbook as an example.

 

  1. Select the Deploy to Azure button on the playbook page in GitHub                                                                                                   DeployToAzure.jpg
  2. This will bring you to the Azure portal, Custom Deployment page. Input the Subscription and Resource Group values corresponding to your Azure Sentinel instance, and select the terms and conditions check box                       DeployTemplate.jpg
  3. Select the Purchase button at the bottom of the page
  4. You will receive an Azure notification when the deployment has completed                                                               DeploymentSucceeded.jpg

 

Configuration

Once the playbook has been imported into your Azure Sentinel instance your will need to edit the playbook to configure the connections. Certain playbook actions require additional connection information to function, most commonly these are in the form of credentials for actions that require connecting to APIs. In this example, the playbook requires two connections, one for Azure Sentinel to read security alerts and the second for RiskIQ APIs to query for enrichment context for entities found in alerts.

 

  1. In the Azure portal, navigate to your Azure Sentinel workspace where you imported the playbook
  2. Select Playbooks from the Azure Sentinel navigation menu
  3. Select the Recent-IP-Passive-DNS playbook by selecting the playbook name
  4. Select Edit from the top menu of the playbook
  5. There are four steps in this playbook requiring you to configure connections                                 ConfigureConnections.jpg
  6. Select a Connection from one of the steps requiring configuration and configure a new connection. For the connections to Azure Sentinel the user specified when establishing the connection must have sufficient permissions in the Azure Sentinel workspace to read the security alerts. For the RiskIQ connection, enter your RiskIQ API token and secret obtained from RiskIQ.
  7. Select Save from the top menu of the playbook to save the playbook

 

Use the RiskIQ playbook to enrich security incidents

Now that the Recent-IP-Passive-DNS playbook is installed and configured you can use it with the built-in Azure Sentinel automation framework in your analytics rules. Let's take a look at how to associate this playbook with an analytic rule to enrich security incidents and give your security responders additional context for triage and investigation.

 

  1. Navigate to your Azure Sentinel Analytics page and select an existing analytics rule or template item you wish to add the playbook automation. Select Edit for an existing rule or Create rule for a new rule.
  2. The Recent-IP-Passive-DNS playbook works with analytics rules which map IP address entities so make sure you are working with such a rule. For simple testing of the playbook automation you can use rule logic as shown below to force an alert creation with a specific IP address.
    AzureActivity
    | take 1
    | extend IPCustomEntity = "144.91.119.160"​
  3. Navigate to the Automated response tab and place a check mark in the box for the Recent-IP-Passive-DNS playbook which will enable the playbook to run each time the analytic rule generates security alerts
  4. Select Save to finish and return to the Analytics page

 

The Recent-IP-Passive-DNS playbook queries the RiskIQ passive DNS database and retrieves any domains from the last 30 days associated with the IP address found in the security alert. It then adds this enrichment information to the resulting security incident so your security responders can easily access this additional context with triaging the incident. Let's take a look at this experience for your security responders.

 

  1. Navigate to your Azure Sentinel Incidents page
  2. Locate the incident generated from the analytic rule configured to run the Recent-IP-Passive-DNS playbook automation and select Full details from the information pane
  3. Select the Comments tab to see the enrichment added by the Recent-IP-Passive-DNS playbook automation. You can also view the information in the RiskIQ portal by following the link provided at the bottom of the comment                                                                                                            incident.jpg

Summary

 

In this post you learned how to obtain, configure, and associate the RiskIQ Intelligence Connector playbooks with analytics rules to enrich security incidents with additional context. Azure Sentinel, when combined with RiskIQ, has the potential to reshape how security teams operate, seamlessly integrating the most comprehensive external visibility with the advanced threat detection, AI, and orchestration found in Azure Sentinel.