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

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

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"
    }
  ]
}