High Number of Urgent Vulnerabilities Detected

let threshold = 10;
QualysHostDetection_CL
| mv-expand todynamic(Detections_s)
| where Detections_s.Severity == "5"
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by NetBios_s, IPAddress
| where count_ >= threshold
| extend timestamp = StartTime, HostCustomEntity = NetBios_s, IPCustomEntity = IPAddress

triggerOperator: gt
version: 1.0.2
query: |
  let threshold = 10;
  QualysHostDetection_CL
  | mv-expand todynamic(Detections_s)
  | where Detections_s.Severity == "5"
  | summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by NetBios_s, IPAddress
  | where count_ >= threshold
  | extend timestamp = StartTime, HostCustomEntity = NetBios_s, IPCustomEntity = IPAddress  
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: HostCustomEntity
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/QualysVM/HighNumberofVulnDetected.yaml
queryFrequency: 1h
requiredDataConnectors:
- connectorId: QualysVulnerabilityManagement
  dataTypes:
  - QualysHostDetection_CL
metadata:
  source:
    kind: Community
  author:
    name: chicduong
  categories:
    domains:
    - Security - Threat Intelligence
  support:
    tier: Community
name: High Number of Urgent Vulnerabilities Detected
queryPeriod: 1h
severity: Medium
kind: Scheduled
tactics:
- InitialAccess
id: be52662c-3b23-435a-a6fa-f39bdfc849e6
description: |
    'This Creates an incident when a host has a high number of Urgent, severity 5, vulnerabilities detected.'
relevantTechniques:
- T1190
triggerThreshold: 0

{
  "$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/be52662c-3b23-435a-a6fa-f39bdfc849e6')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/be52662c-3b23-435a-a6fa-f39bdfc849e6')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "High Number of Urgent Vulnerabilities Detected",
        "description": "'This Creates an incident when a host has a high number of Urgent, severity 5, vulnerabilities detected.'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "let threshold = 10;\nQualysHostDetection_CL\n| mv-expand todynamic(Detections_s)\n| where Detections_s.Severity == \"5\"\n| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by NetBios_s, IPAddress\n| where count_ >= threshold\n| extend timestamp = StartTime, HostCustomEntity = NetBios_s, IPCustomEntity = IPAddress\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1190"
        ],
        "alertRuleTemplateName": "be52662c-3b23-435a-a6fa-f39bdfc849e6",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "FullName"
              }
            ],
            "entityType": "Host"
          },
          {
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ],
            "entityType": "IP"
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/QualysVM/HighNumberofVulnDetected.yaml",
        "templateVersion": "1.0.2"
      }
    }
  ]
}