Visualize Microsoft Defender for IoT data with Azure Monitor workbooks

Bài viết
12/14/2022

Azure Monitor workbooks provide graphs, charts, and dashboards that visually reflect data stored in your Azure Resource Graph subscriptions and are available directly in Microsoft Defender for IoT.

In the Azure portal, use the Defender for IoT Workbooks page to view workbooks created by Microsoft and provided out-of-the-box, or created by customers and shared across the community.

Each workbook graph or chart is based on an Azure Resource Graph (ARG) query running on your data. In Defender for IoT, you might use ARG queries to:

Gather sensor statuses
Identify new devices in your network
Find alerts related to specific IP addresses
Understand which alerts are seen by each sensor

View workbooks

To view out-of-the-box workbooks created by Microsoft, or other workbooks already saved to your subscription:

In the Azure portal, go to Defender for IoT and select Workbooks on the left.
Modify your filtering options if needed, and select a workbook to open it.

Defender for IoT provides the following workbooks out-of-the-box:

Sensor health. Displays data about your sensor health, such as the sensor console software versions installed on your sensors.
Alerts. Displays data about alerts occurring on your sensors, including alerts by sensor, alert types, recent alerts generated, and more.
Devices. Displays data about your device inventory, including devices by vendor, subtype, and new devices identified.
Vulnerabilities. Displays data about the Vulnerabilities detected in OT devices across your network. Select an item in the Device vulnerabilities, Vulnerable devices, or Vulnerable components tables to view related information in the tables on the right.

Create custom workbooks

Use the Defender for IoT Workbooks page to create custom Azure Monitor workbooks directly in Defender for IoT.

On the Workbooks page, select New, or to start from another template, open the template workbook and select Edit.

In your new workbook, select Add, and select the option you want to add to your workbook. If you're editing an existing workbook or template, select the options (...) button on the right to access the Add menu.

You can add any of the following elements to your workbook:

Option	Description
Text	Add text to describe the graphs shown on your workbook or any additional action required.
Parameters	Define parameters to use in your workbook text and queries.
Links / tabs	Add navigational elements to your workbook, including lists, links to other targets, extra tabs, or toolbars.
Query	Add a query to use when creating your workbook graphs and charts. - Make sure to select Azure Resource Graph as your Data source and select all of your relevant subscriptions. - Add a graphical representation for your data by selecting a type from the Visualization options.
Metric	Add metrics to use when creating workbook graphs and charts.
Group	Add groups to organize your workbooks into sub-areas.

For each option, after you've defined all available settings, select the Add... or Run... button to create that workbook element. For example, Add parameter or Run Query.

Tip

You can build your queries in the Azure Resource Graph Explorer and copy them into your workbook query.

In the toolbar, select Save or Save as to save your workbook, and then select Done editing.
Select Workbooks to go back to the main workbook page with the full workbook listing.

Reference parameters in your queries

Once you've created a parameter, reference it in your query using the following syntax: {ParameterName}. For example:

iotsecurityresources
| where type == "microsoft.iotsecurity/sensors"
| extend Name=name
| extend Status= properties.sensorStatus
| where Name=={SensorName}
| project Name,Status

Sample queries

This section provides sample queries that are commonly used in Defender for IoT workbooks.

Alert queries

Distribution of alerts across sensors

iotsecurityresources
| where type == "microsoft.iotsecurity/locations/devicegroups/alerts"
| extend Sensor=properties.extendedProperties.SensorId
| where properties.status!='Closed'
| summarize Alerts=count() by tostring(Sensor)
| sort by Alerts desc

New alerts from the last 24 hours

iotsecurityresources
| where type == "microsoft.iotsecurity/locations/devicegroups/alerts"
| where properties.status!='Closed'
| extend AlertTime=properties.startTimeUtc
| extend Type=properties.displayName
| where AlertTime > ago(1d)
| project AlertTime, Type

Alerts by source IP address

iotsecurityresources
| where type == "microsoft.iotsecurity/locations/devicegroups/alerts"
| extend Type=properties.displayName
| extend Source_IP=properties.extendedProperties.SourceDeviceAddress
| extend Destination_IP=properties.extendedProperties.DestinationDeviceAddress
| where Source_IP=='192.168.10.1'
| project Source_IP, Destination_IP, Type

Device queries

OT device inventory by vendor

iotsecurityresources
| extend Vendor= properties.hardware.vendor
| where properties.deviceDataSource=='OtSensor'
| summarize Devices=count() by tostring(Vendor)
| sort by Devices

OT device inventory by sub-type, such as PLC, embedded device, UPS, and so on

iotsecurityresources
| where type == "microsoft.iotsecurity/locations/devicegroups/devices"
| extend SubType=properties.deviceSubTypeDisplayName
| summarize Devices=count() by tostring(SubType)
| sort by Devices

New OT devices by sensor, site, and IPv4 address

iotsecurityresources
| where type == "microsoft.iotsecurity/locations/devicegroups/devices"
| extend TimeFirstSeen=properties.firstSeen
| where TimeFirstSeen > ago(1d)
| extend DeviceName=properties.deviceName
| extend Site=properties.sensor.site
| extend Sensor=properties.sensor.name
| extend IPv4=properties.nics.[0].ipv4Address
| where properties.deviceDataSource=='OtSensor'
| project TimeFirstSeen, Site, Sensor, DeviceName, IPv4

Summarize alerts by Purdue level

iotsecurityresources
    | where type == "microsoft.iotsecurity/locations/devicegroups/alerts"
    | project 
        resourceId = id,
        affectedResource = tostring(properties.extendedProperties.DeviceResourceIds),
        id = properties.systemAlertId
    | join kind=leftouter (
        iotsecurityresources | where type == "microsoft.iotsecurity/locations/devicegroups/devices" 
        | project 
            sensor = properties.sensor.name,
            zone = properties.sensor.zone,
            site = properties.sensor.site,
            deviceProperties=properties,
            affectedResource = tostring(id)
    ) on affectedResource
    | project-away affectedResource1
    | where deviceProperties.deviceDataSource == 'OtSensor'
    | summarize Alerts=count() by tostring(deviceProperties.purdueLevel)

Next steps

Learn more about viewing dashboards and reports on the sensor console:

Learn more about Azure Monitor workbooks and Azure Resource Graph:

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