Cyble Vision Alerts Website Defacement Content | Microsoft Sentinel Analytic Rules

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Id	91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8
Rulename	Cyble Vision Alerts Website Defacement Content
Description	Triggers when monitored websites show new or suspicious content referencing known defacement patterns. Supports investigation into potential web compromise incidents.
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_Content.yaml
Version	1.0.0
Arm template	91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8.json

KQL

Alerts_defacement_content  
| where Service == "defacement_content" 
| extend MappedSeverity = Severity

YAML

incidentConfiguration:
  alertDetailsOverride: 
  alertDescriptionFormat: |
    New or modified content was detected on website {{DC_DomainName}}. URL {{DC_URL}}. This may indicate unauthorized website updates or defacement activity.
  alertDisplayNameFormat: Defacement Activity Detected {{DC_DomainName}}
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
name: Cyble Vision Alerts Website Defacement Content
triggerOperator: GreaterThan
query: |
  Alerts_defacement_content  
  | where Service == "defacement_content" 
  | extend MappedSeverity = Severity
queryfrequency: 30m
description: |
  'Triggers when monitored websites show new or suspicious content referencing known defacement patterns. Supports investigation into potential web compromise incidents.'
id: 91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8
triggerThreshold: 0
queryPeriod: 30m
enabled: true
version: 1.0.0
kind: Scheduled
customDetails:
  DC_URL: DC_URL
  AlertID: AlertID
  DC_DomainName: DC_DomainName
  DC_RecordID: DC_RecordID
  DC_Keywords: DC_Keywords
  MappedSeverity: Severity
  Status: Status
  Service: Service
status: Available
eventGroupingSettings:
  aggregationKind: AlertPerResult
severity: Low
requiredDataConnectors:
- connectorId: CybleVisionAlerts
  dataTypes:
  - CybleVisionAlerts_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyble%20Vision/Analytic%20Rules/Alerts_Defacement_Content.yaml
relevantTechniques:
- T1491
tactics:
- Impact
entityMappings:
- fieldMappings:
  - identifier: Url
    columnName: DC_URL
  entityType: Url
- fieldMappings:
  - identifier: HostName
    columnName: DC_DomainName
  entityType: Host

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/91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8')]",
      "properties": {
        "alertRuleTemplateName": "91a00e4f-3edb-49e9-ba6f-cec87a5bd2f8",
        "customDetails": {
          "AlertID": "AlertID",
          "DC_DomainName": "DC_DomainName",
          "DC_Keywords": "DC_Keywords",
          "DC_RecordID": "DC_RecordID",
          "DC_URL": "DC_URL",
          "MappedSeverity": "Severity",
          "Service": "Service",
          "Status": "Status"
        },
        "description": "'Triggers when monitored websites show new or suspicious content referencing known defacement patterns. Supports investigation into potential web compromise incidents.'\n",
        "displayName": "Cyble Vision Alerts Website Defacement Content",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Url",
            "fieldMappings": [
              {
                "columnName": "DC_URL",
                "identifier": "Url"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DC_DomainName",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "alertDescriptionFormat": "New or modified content was detected on website {{DC_DomainName}}. URL {{DC_URL}}. This may indicate unauthorized website updates or defacement activity.\n",
          "alertDetailsOverride": null,
          "alertDisplayNameFormat": "Defacement Activity Detected {{DC_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_Content.yaml",
        "query": "Alerts_defacement_content  \n| where Service == \"defacement_content\" \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"
    }
  ]
}