Infoblox - High Threat Level Query Not Blocked Detected

let threshold = 1;
InfobloxCDC
| where DeviceEventClassID has_cs "RPZ"
| where ThreatLevel_Score >=80
| where InfobloxB1PolicyAction == "Log" or SimplifiedDeviceAction == "PASSTHRU"
| summarize count() by SourceIP
| where count_ > threshold
| join kind=inner (InfobloxCDC
    | where DeviceEventClassID has_cs "RPZ"
    | where ThreatLevel_Score >=80
    | where InfobloxB1PolicyAction == "Log" or SimplifiedDeviceAction == "PASSTHRU"
    ) on SourceIP
| extend timestamp = TimeGenerated, IPCustomEntity = SourceIP, HostCustomEntity = DeviceName

version: 1.0.1
status: Available
queryFrequency: 1h
requiredDataConnectors:
- connectorId: InfobloxCloudDataConnector
  dataTypes:
  - CommonSecurityLog (InfobloxCDC)
entityMappings:
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: HostCustomEntity
    identifier: HostName
  entityType: Host
kind: Scheduled
queryPeriod: 1h
severity: Medium
query: |
  let threshold = 1;
  InfobloxCDC
  | where DeviceEventClassID has_cs "RPZ"
  | where ThreatLevel_Score >=80
  | where InfobloxB1PolicyAction == "Log" or SimplifiedDeviceAction == "PASSTHRU"
  | summarize count() by SourceIP
  | where count_ > threshold
  | join kind=inner (InfobloxCDC
      | where DeviceEventClassID has_cs "RPZ"
      | where ThreatLevel_Score >=80
      | where InfobloxB1PolicyAction == "Log" or SimplifiedDeviceAction == "PASSTHRU"
      ) on SourceIP
  | extend timestamp = TimeGenerated, IPCustomEntity = SourceIP, HostCustomEntity = DeviceName  
triggerOperator: gt
id: dc7af829-d716-4774-9d6f-03d9aa7c27a4
description: |
    'This creates an incident in the event a single host generates at least 1 high threat level query (Threat Defense security hit) that is not blocked or redirected in 1 hour. Query count threshold and scheduling is customizable. This rule depends on a parser based on a Kusto Function to work as expected called [**InfobloxCDC**](https://aka.ms/sentinel-InfobloxCloudDataConnector-parser).'
triggerThreshold: 0
name: Infoblox - High Threat Level Query Not Blocked Detected
relevantTechniques:
- T1498
- T1565
tactics:
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-HighThreatLevelQueryNotBlockedDetected.yaml

{
  "$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/dc7af829-d716-4774-9d6f-03d9aa7c27a4')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/dc7af829-d716-4774-9d6f-03d9aa7c27a4')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "Infoblox - High Threat Level Query Not Blocked Detected",
        "description": "'This creates an incident in the event a single host generates at least 1 high threat level query (Threat Defense security hit) that is not blocked or redirected in 1 hour. Query count threshold and scheduling is customizable. This rule depends on a parser based on a Kusto Function to work as expected called [**InfobloxCDC**](https://aka.ms/sentinel-InfobloxCloudDataConnector-parser).'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "let threshold = 1;\nInfobloxCDC\n| where DeviceEventClassID has_cs \"RPZ\"\n| where ThreatLevel_Score >=80\n| where InfobloxB1PolicyAction == \"Log\" or SimplifiedDeviceAction == \"PASSTHRU\"\n| summarize count() by SourceIP\n| where count_ > threshold\n| join kind=inner (InfobloxCDC\n    | where DeviceEventClassID has_cs \"RPZ\"\n    | where ThreatLevel_Score >=80\n    | where InfobloxB1PolicyAction == \"Log\" or SimplifiedDeviceAction == \"PASSTHRU\"\n    ) on SourceIP\n| extend timestamp = TimeGenerated, IPCustomEntity = SourceIP, HostCustomEntity = DeviceName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1498",
          "T1565"
        ],
        "alertRuleTemplateName": "dc7af829-d716-4774-9d6f-03d9aa7c27a4",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "IPCustomEntity"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "identifier": "HostName",
                "columnName": "HostCustomEntity"
              }
            ]
          }
        ],
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-HighThreatLevelQueryNotBlockedDetected.yaml",
        "templateVersion": "1.0.1"
      }
    }
  ]
}