Cyble Vision Alerts Website Defacement URL | Microsoft Sentinel Analytic Rules

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Id	1dabe566-a0f1-4c27-8307-aea5a79eb5e9
Rulename	Cyble Vision Alerts Website Defacement URL
Description	Detects suspicious or unexpected changes to monitored URLs which may indicate website tampering or defacement.
Severity	Low
Tactics	Impact
Techniques	T1491
Required data connectors	CybleVisionAlerts
Kind	Scheduled
Query frequency	30m
Query period	30m
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble%20Vision/Analytic%20Rules/Alerts_defacement_url_rule.yaml
Version	1.0.0
Arm template	1dabe566-a0f1-4c27-8307-aea5a79eb5e9.json

KQL

Alerts_defacement_url  
| where Service == "defacement_url" 
| extend MappedSeverity = Severity

YAML

incidentConfiguration:
  alertDetailsOverride: 
  alertDescriptionFormat: |
    A monitored URL for domain {{DU_DomainName}} has changed {{DU_Description}}. This may indicate unauthorized modification consistent with website defacement activity.
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    enabled: false
    matchingMethod: AllEntities
  alertDisplayNameFormat: URL Content Change Detected {{DU_DomainName}}
  createIncident: true
entityMappings:
- entityType: Url
  fieldMappings:
  - columnName: DU_Description
    identifier: Url
- entityType: Host
  fieldMappings:
  - columnName: DU_DomainName
    identifier: HostName
query: |
  Alerts_defacement_url  
  | where Service == "defacement_url" 
  | extend MappedSeverity = Severity
eventGroupingSettings:
  aggregationKind: AlertPerResult
id: 1dabe566-a0f1-4c27-8307-aea5a79eb5e9
queryfrequency: 30m
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble%20Vision/Analytic%20Rules/Alerts_defacement_url_rule.yaml
enabled: true
version: 1.0.0
severity: Low
relevantTechniques:
- T1491
name: Cyble Vision Alerts Website Defacement URL
kind: Scheduled
tactics:
- Impact
requiredDataConnectors:
- dataTypes:
  - CybleVisionAlerts_CL
  connectorId: CybleVisionAlerts
description: |
  'Detects suspicious or unexpected changes to monitored URLs which may indicate website tampering or defacement.'
customDetails:
  DU_RecordID: DU_RecordID
  DU_Type: DU_Type
  DU_Keywords: DU_Keywords
  AlertID: AlertID
  DU_DomainName: DU_DomainName
  DU_description: DU_Description
  Service: Service
  Status: Status
  MappedSeverity: Severity
triggerOperator: GreaterThan
triggerThreshold: 0
queryPeriod: 30m

ARM

{
  "$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/1dabe566-a0f1-4c27-8307-aea5a79eb5e9')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1dabe566-a0f1-4c27-8307-aea5a79eb5e9')]",
      "properties": {
        "alertRuleTemplateName": "1dabe566-a0f1-4c27-8307-aea5a79eb5e9",
        "customDetails": {
          "AlertID": "AlertID",
          "DU_description": "DU_Description",
          "DU_DomainName": "DU_DomainName",
          "DU_Keywords": "DU_Keywords",
          "DU_RecordID": "DU_RecordID",
          "DU_Type": "DU_Type",
          "MappedSeverity": "Severity",
          "Service": "Service",
          "Status": "Status"
        },
        "description": "'Detects suspicious or unexpected changes to monitored URLs which may indicate website tampering or defacement.'\n",
        "displayName": "Cyble Vision Alerts Website Defacement URL",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Url",
            "fieldMappings": [
              {
                "columnName": "DU_Description",
                "identifier": "Url"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DU_DomainName",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "alertDescriptionFormat": "A monitored URL for domain {{DU_DomainName}} has changed {{DU_Description}}. This may indicate unauthorized modification consistent with website defacement activity.\n",
          "alertDetailsOverride": null,
          "alertDisplayNameFormat": "URL Content Change Detected {{DU_DomainName}}",
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble%20Vision/Analytic%20Rules/Alerts_defacement_url_rule.yaml",
        "query": "Alerts_defacement_url  \n| where Service == \"defacement_url\" \n| extend MappedSeverity = Severity\n",
        "queryfrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Low",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1491"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}