High Number of Urgent Vulnerabilities Detected

let threshold = 10;
QualysHostDetectionV2_CL
| where Severity_s == "5"
| summarize StartTime = min(TimeGenerated), EndTime = max(TimeGenerated), count() by NetBios_s, IPAddress
| where count_ >= threshold
| extend timestamp = StartTime, HostCustomEntity = NetBios_s, IPCustomEntity = IPAddress

relevantTechniques:
- T1190
name: High Number of Urgent Vulnerabilities Detected
requiredDataConnectors:
- dataTypes:
  - QualysHostDetection_CL
  connectorId: QualysVulnerabilityManagement
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: HostCustomEntity
  entityType: Host
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
triggerThreshold: 0
id: 3edb7215-250b-40c0-8b46-79093949242d
tactics:
- InitialAccess
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/QualysVM/Analytic Rules/HighNumberofVulnDetectedV2.yaml
queryPeriod: 1h
kind: Scheduled
queryFrequency: 1h
severity: Medium
status: Available
description: |
    'This Creates an incident when a host has a high number of Urgent, severity 5, vulnerabilities detected.'
query: |
  let threshold = 10;
  QualysHostDetectionV2_CL
  | where Severity_s == "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

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/3edb7215-250b-40c0-8b46-79093949242d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3edb7215-250b-40c0-8b46-79093949242d')]",
      "properties": {
        "alertRuleTemplateName": "3edb7215-250b-40c0-8b46-79093949242d",
        "customDetails": null,
        "description": "'This Creates an incident when a host has a high number of Urgent, severity 5, vulnerabilities detected.'\n",
        "displayName": "High Number of Urgent Vulnerabilities Detected",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/QualysVM/Analytic Rules/HighNumberofVulnDetectedV2.yaml",
        "query": "let threshold = 10;\nQualysHostDetectionV2_CL\n| where Severity_s == \"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",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1190"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}