Microsoft Defender for Cloud Alerts Workbook

Published Oct 13 2021 07:26 AM 4,888 Views

Microsoft Defender for Cloud is an evolution of threat-detection technologies protecting Azure, On-premises, and hybrid cloud environments. Security Alerts are the notifications that Defender for Cloud generates when it detects threats on your resources. Defender for Cloud prioritizes and lists the alerts, along with information needed for you to quickly investigate the problem. Defender for Cloud also provides detailed steps to help you remediate attacks. Alerts data is retained for 90 days. Here is the list of resource types that Defender for Cloud secures. Make sure to visit this article that lists the security alerts you might get from Defender for Cloud and any Enhanced security features plans you’ve enabled.

 

Defender for Cloud allows you to create custom workbooks across your data, and also comes with built-in workbook templates to allow you to quickly gain insights across your data as soon as you connect a data source. For example, with Secure Score Over Time report, you can track your organization’s security posture. Read more about how workbooks provide rich set of functionalities in our Azure monitor documentation and to understand workbooks gallery in Defender for Cloud, make sure to review our documentation.

 

With this blog, I’m introducing you to another great template that provides representation of your active alerts in different pivots that help you understand the overall threats in your environment and how to prioritize them.

 

Pre-requisite: Most of the workbook uses Azure Resource Graph to query the data. In some cases (to display Map View) it uses Log Analytics workspace to query the data. So, make sure you have continuous export turned on and exporting the Security Alerts to the Log Analytics workspace as shown in the image (1) below.

 

SafeenaBegumLepakshi_0-1635708292529.png

 

To configure continuous export across your organization, use the supplied Azure Policy 'DeployIfNotExist' policies described in Configure continuous export at scale.

 

The Microsoft Defender for Cloud Alerts workbook creates three pie charts and six graphs for the subscriptions as explained in detail below -

Pie Charts:

   Pie-Chart

Example

 

 

Severity

Use this section to monitor the number of active alert counts and its severity rank for your subscriptions.

 

This will help you to immediately understand the magnitude of the main threats on your environment.

 

SafeenaBegumLepakshi_0-1634132298271.png

 

 

 

Resource Group

Use this section to monitor the number of active alerts in each Resource Group.

 

This graph will help you remediate the active alerts very easily based on the Resource Group.

 

SafeenaBegumLepakshi_1-1634132298275.png

 

 

 

Tag

Use this section to monitor the count of active alerts per Tags.

 

This graph will help you remediate the active alerts very easily based on the tags.

 

SafeenaBegumLepakshi_2-1634132298279.png

 

 

 

Graphs:

The workbook has several graphs displaying detailed information on the alerts as follows:

    Graph

Example

 

Top 5 attacked resources:

This table will display Top five attacked resources with resource names and the count.

 

The table will further drill down to each alert providing you details like AlertDisplayName, Tactics, SeverityRank, SubscriptionId and more.

(Refer to the GIF below for the output example)

 

ResourceId representing “All” in these three graphs, shows you all the attacked resources in your environment (regardless of their Severity).

 

 

SafeenaBegumLepakshi_3-1634132371047.png

 

 

 

 

 

Top Alert Types:

This table will display a list of Top alerts in your environment with the alert display name and how many times an alert has appeared in your environment as shown in image (3). These details will give you a good understanding of the common alerts your environment has been experiencing in order to help you take proactive action.

 

 

 

 

 

SafeenaBegumLepakshi_4-1634132371053.png

 

 

 

New Alerts:

This table will display information if your environment has any new alerts since last 24hrs.

 

This information will help you react quickly to the immediate threats on your environment.

 

 

SafeenaBegumLepakshi_5-1634132371054.png

 

 

 

Example of alerts navigation:

As you navigate through the alerts in the above graphs, you could dig through deep into the alert to understand the number of alerts raised for that resource. As you navigate through these three graphs to review the alerts, make sure you click on the ‘little arrow’ at the top of each table (that reads ‘clear selection’) to clear the current selection before you start clicking on the alerts from the second and third graphs.

Clicking on any alert you want to review in the graphs will present you ‘Open Alert View’ button at the bottom of the table clicking on which would open-up more details about the alert you selected.

 

Refer to the example below on alerts navigation.

Alerts (online-video-cutter.com).gif

 

MITRE ATT&CK tactics

The MITRE ATT&CK matrix contains a set of techniques used by adversaries to accomplish a specific objective. Those objectives are categorized as tactics in the ATT&CK Matrix. The objectives are presented linearly from the point of reconnaissance to the final goal of exfiltration or "impact". Within each tactic of the MITRE ATT&CK matrix there are adversary techniques, which describe the actual activity carried out by the adversary.

 

Enhanced security features alerts presents the kill-chain stage of the detected suspicious activity based on MITRE ATT&CK matrix. Enabling enhanced security features monitors for many threats to resources and most alerts have MITRE ATT&CK tactics that can help you understand the kill chain intent. Defender for Cloud’s supported kill-chain intents are based on version 7 of the MITRE ATT&CK matrix.

 

In this section of the workbook, you’ll be presented with a graph representing the number of active alerts in each kill-chain stage. This graph will help you understand the kill-chain intent of an attack so that you investigate and report the event more easily and address the more urgent alerts (in advanced MITRE ATT&CK tactic) sooner.

Picture2.png

List View &            

This section of the workbook will provide you details of all current active alerts in your organization in two views (List View and Map View). Displays very important information that you should pay attention to. For eg., Severity, AlertDisplayName, If this is an Incident (Defender for Cloud provides a correlated view called Incidents) or an alert etc. Use this data to analyze what actions the attacker took, and what resources were affected. Have strategies to react to alerts as soon as they are generated.

Use the data to support these activities:

  • Remediation of threats.
  • Investigation of an incident.
  • Proactive hunting activities.

Under List View, clicking on any alert you want to review will present you ‘Open Alert View’ button at the bottom of the table which would open-up more details about the alert you selected.

Picture3.png

The workbook also presents you with Map View, this map represents security alerts that contain IP addresses targetting your resources. Markings on the map represent sources of the attack on your resources.

Inorder to review the alert, you can click on the dot in the AlertsMapView table, which will present another table with the affected ResourceId, AlertDisplayName, SubscriptionId, StartTime and Resource Group that’s under attack.

 

Picture4.png

You can further drill down to the details of the specific alert you wish to, by selecting the alert which will present a button at the bottom of the graph ‘Open Alert View’, clicking on which would take you to the details of the alert.

To select another dot and view details of that alert, you might have to clear selection by clicking on the ‘arrow’ (that reads ‘clear selection’) at the top of the map graph.

Check out the below that gives you an overview of the usage of these fields.

 

MAP (online-video-cutter.com).gif

Make sure to refer to this article to understand list of security alerts you might get from Microsoft Defender for Cloud and any enhanced security plans you’ve enabled.

 

Make sure to utilize the additional filters we have in the workbook, to search for the alerts for eg., with just high/low/medium severity etc.

Picture5.png

You can find this workbook in our Github repository

Direct link to the Azure Defender Active Alerts workbook

 

We hope you have fun deploying and navigating through the workbook to get an end-to-end experience on the alerts and would love any feedback.

 

Co-authors:

@Lihie_Berkovitz and @tal_rosler

 

 

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