Microsoft Sentinel Analytic Rules
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  5. PLC Stop Command (Microsoft Defender for IoT)

PLC Stop Command (Microsoft Defender for IoT)

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Ida7d3f642-15d8-4e83-99ee-83ca3352525d
RulenamePLC Stop Command (Microsoft Defender for IoT)
DescriptionThis alert leverages Defender for IoT to detect PLC stop commands which could indicate improper configuration or malicious activity on the network such as a threat manipulating PLC programming to affect the function of the network.
SeverityMedium
TacticsDefenseEvasion
TechniquesT0858
Required data connectorsIoT
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTPLCStopCommand.yaml
Version1.0.1
Arm templatea7d3f642-15d8-4e83-99ee-83ca3352525d.json
Deploy To Azure
let alertList = dynamic(["Controller Reset", "An S7 Stop PLC Command was Sent", "Controller Stop", "Excessive Restart Rate of an Outstation", "GE SRTP Stop PLC Command was Sent", "Outstation Restarted", "Outstation Restarts Frequently", "Profinet Device Factory Reset", "Slave Device Unrecoverable Failure", "Suspicion of Hardware Problems in Outstation"]);
SecurityAlert
| where ProviderName == "IoTSecurity"
| where AlertName has_any (alertList) 
| extend ExtendedProperties = parse_json(ExtendedProperties)
| where tostring(ExtendedProperties.isNew) == "True"
| extend DeviceId = tostring(ExtendedProperties.DeviceId), 
         SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), 
         DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), 
         RemediationSteps = tostring(parse_json(RemediationSteps)[0]), 
         Protocol = tostring(ExtendedProperties.Protocol), 
         AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)
| project
  TimeGenerated,
  DeviceId,
  ProductName,
  ProductComponentName,
  AlertSeverity,
  AlertName,
  Description,
  Protocol,
  SourceDeviceAddress,
  DestDeviceAddress,
  RemediationSteps,
  Tactics,
  Entities,
  VendorOriginalId,
  AlertLink,
  AlertManagementUri,
  Techniques

queryFrequency: 1h
alertDetailsOverride:
  alertSeverityColumnName: AlertSeverity
  alertDescriptionFormat: (MDIoT) {{Description}}
  alertDisplayNameFormat: (MDIoT) {{AlertName}}
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: RemediationSteps
    alertProperty: RemediationSteps
  - value: Techniques
    alertProperty: Techniques
  - value: ProductComponentName
    alertProperty: ProductComponentName
  - value: AlertLink
    alertProperty: AlertLink
  alertTacticsColumnName: Tactics
triggerOperator: gt
tactics:
- DefenseEvasion
description: |
    'This alert leverages Defender for IoT to detect PLC stop commands which could indicate improper configuration or malicious activity on the network such as a threat manipulating PLC programming to affect the function of the network.'
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
relevantTechniques:
- T0858
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTPLCStopCommand.yaml
name: PLC Stop Command (Microsoft Defender for IoT)
sentinelEntitiesMappings:
- columnName: Entities
severity: Medium
triggerThreshold: 0
version: 1.0.1
entityMappings: 
query: |
  let alertList = dynamic(["Controller Reset", "An S7 Stop PLC Command was Sent", "Controller Stop", "Excessive Restart Rate of an Outstation", "GE SRTP Stop PLC Command was Sent", "Outstation Restarted", "Outstation Restarts Frequently", "Profinet Device Factory Reset", "Slave Device Unrecoverable Failure", "Suspicion of Hardware Problems in Outstation"]);
  SecurityAlert
  | where ProviderName == "IoTSecurity"
  | where AlertName has_any (alertList) 
  | extend ExtendedProperties = parse_json(ExtendedProperties)
  | where tostring(ExtendedProperties.isNew) == "True"
  | extend DeviceId = tostring(ExtendedProperties.DeviceId), 
           SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), 
           DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), 
           RemediationSteps = tostring(parse_json(RemediationSteps)[0]), 
           Protocol = tostring(ExtendedProperties.Protocol), 
           AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)
  | project
    TimeGenerated,
    DeviceId,
    ProductName,
    ProductComponentName,
    AlertSeverity,
    AlertName,
    Description,
    Protocol,
    SourceDeviceAddress,
    DestDeviceAddress,
    RemediationSteps,
    Tactics,
    Entities,
    VendorOriginalId,
    AlertLink,
    AlertManagementUri,
    Techniques  
customDetails:
  AlertManagementUri: AlertManagementUri
  Sensor: DeviceId
  VendorOriginalId: VendorOriginalId
  Protocol: Protocol
id: a7d3f642-15d8-4e83-99ee-83ca3352525d
requiredDataConnectors:
- connectorId: IoT
  dataTypes:
  - SecurityAlert (ASC for IoT)
kind: Scheduled
queryPeriod: 1h

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/a7d3f642-15d8-4e83-99ee-83ca3352525d')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a7d3f642-15d8-4e83-99ee-83ca3352525d')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "PLC Stop Command (Microsoft Defender for IoT)",
        "description": "'This alert leverages Defender for IoT to detect PLC stop commands which could indicate improper configuration or malicious activity on the network such as a threat manipulating PLC programming to affect the function of the network.'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "let alertList = dynamic([\"Controller Reset\", \"An S7 Stop PLC Command was Sent\", \"Controller Stop\", \"Excessive Restart Rate of an Outstation\", \"GE SRTP Stop PLC Command was Sent\", \"Outstation Restarted\", \"Outstation Restarts Frequently\", \"Profinet Device Factory Reset\", \"Slave Device Unrecoverable Failure\", \"Suspicion of Hardware Problems in Outstation\"]);\nSecurityAlert\n| where ProviderName == \"IoTSecurity\"\n| where AlertName has_any (alertList) \n| extend ExtendedProperties = parse_json(ExtendedProperties)\n| where tostring(ExtendedProperties.isNew) == \"True\"\n| extend DeviceId = tostring(ExtendedProperties.DeviceId), \n         SourceDeviceAddress = tostring(ExtendedProperties.SourceDeviceAddress), \n         DestDeviceAddress = tostring(ExtendedProperties.DestinationDeviceAddress), \n         RemediationSteps = tostring(parse_json(RemediationSteps)[0]), \n         Protocol = tostring(ExtendedProperties.Protocol), \n         AlertManagementUri = tostring(ExtendedProperties.AlertManagementUri)\n| project\n  TimeGenerated,\n  DeviceId,\n  ProductName,\n  ProductComponentName,\n  AlertSeverity,\n  AlertName,\n  Description,\n  Protocol,\n  SourceDeviceAddress,\n  DestDeviceAddress,\n  RemediationSteps,\n  Tactics,\n  Entities,\n  VendorOriginalId,\n  AlertLink,\n  AlertManagementUri,\n  Techniques\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T0858"
        ],
        "alertRuleTemplateName": "a7d3f642-15d8-4e83-99ee-83ca3352525d",
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "alertDetailsOverride": {
          "alertDynamicProperties": [
            {
              "value": "ProductName",
              "alertProperty": "ProductName"
            },
            {
              "value": "RemediationSteps",
              "alertProperty": "RemediationSteps"
            },
            {
              "value": "Techniques",
              "alertProperty": "Techniques"
            },
            {
              "value": "ProductComponentName",
              "alertProperty": "ProductComponentName"
            },
            {
              "value": "AlertLink",
              "alertProperty": "AlertLink"
            }
          ],
          "alertSeverityColumnName": "AlertSeverity",
          "alertTacticsColumnName": "Tactics",
          "alertDisplayNameFormat": "(MDIoT) {{AlertName}}",
          "alertDescriptionFormat": "(MDIoT) {{Description}}"
        },
        "customDetails": {
          "Protocol": "Protocol",
          "Sensor": "DeviceId",
          "VendorOriginalId": "VendorOriginalId",
          "AlertManagementUri": "AlertManagementUri"
        },
        "entityMappings": null,
        "sentinelEntitiesMappings": [
          {
            "columnName": "Entities"
          }
        ],
        "status": "Available",
        "templateVersion": "1.0.1",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/IoTOTThreatMonitoringwithDefenderforIoT/Analytic Rules/IoTPLCStopCommand.yaml"
      }
    }
  ]
}