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CYFIRMA - Brand Intelligence - Domain Impersonation High Rule

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Id10bdf525-5b89-4a25-933a-e63e73b915f1
RulenameCYFIRMA - Brand Intelligence - Domain Impersonation High Rule
Description“This analytics rule detects high-risk domain impersonation activity, where newly registered or existing domains closely resemble the legitimate brand name or organizational assets.

These suspicious domains may use typosquatting, homoglyphs, or brand keywords to mislead users, steal credentials, or host phishing/malicious content.

The domains are identified through CYFIRMA’s external threat intelligence feeds and flagged due to potential misuse in impersonation, fraud, or social engineering attacks targeting employees, customers, or partners.

Early detection of these domains enables proactive mitigation measures such as domain takedown, DNS blocking, and awareness campaigns.”
SeverityHigh
TacticsResourceDevelopment
InitialAccess
CommandAndControl
TechniquesT1583.001
T1586.002
T1566.002
T1566.001
T1071.003
T1071.001
Required data connectorsCyfirmaBrandIntelligenceAlertsDC
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BIDomainImpersonationHighRule.yaml
Version1.0.0
Arm template10bdf525-5b89-4a25-933a-e63e73b915f1.json
Deploy To Azure
// High severity-  Brand Intelligence - Domain Impersonation
let timeFrame = 5m;
CyfirmaBIDomainITAssetAlerts_CL
| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
| extend
    Description=description,
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    AlertUID=alert_uid,
    UID=uid,
    Domain=domain,
    DRDomain=dr_domain,
    DRSubDomain=dr_sub_domain,
    DomainSquat=signature,
    HostProvider=host_provider,
    RegisteredDate=registered_date,
    CreatedDate=created_date,
    ThreatActor=suspected_threat_actor,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    Domain,
    DRDomain,
    DRSubDomain,
    DomainSquat,
    HostProvider,
    RegisteredDate,
    CreatedDate,
    ThreatActor,
    ProductName,
    ProviderName
entityMappings:
- fieldMappings:
  - columnName: Domain
    identifier: DomainName
  entityType: DNS
- fieldMappings:
  - columnName: DomainSquat
    identifier: DomainName
  entityType: DNS
triggerThreshold: 0
severity: High
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 5h
    enabled: false
    matchingMethod: AllEntities
    reopenClosedIncident: false
queryFrequency: 5m
status: Available
customDetails:
  TimeGenerated: TimeGenerated
  FirstSeen: FirstSeen
  RiskScore: RiskScore
  DRSubDomain: DRSubDomain
  Domain: Domain
  RegisteredDate: RegisteredDate
  HostProvider: HostProvider
  AlertUID: AlertUID
  DomainSquat: DomainSquat
  CreatedDate: CreatedDate
  DRDomain: DRDomain
  Description: Description
  LastSeen: LastSeen
  ThreatActor: ThreatActor
  UID: UID
relevantTechniques:
- T1583.001
- T1586.002
- T1566.002
- T1566.001
- T1071.003
- T1071.001
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - High Severity Alert - Malicious Domain Impersonation of Corporate Brand - Domain Squat: {{DomainSquat}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BIDomainImpersonationHighRule.yaml
triggerOperator: gt
id: 10bdf525-5b89-4a25-933a-e63e73b915f1
requiredDataConnectors:
- connectorId: CyfirmaBrandIntelligenceAlertsDC
  dataTypes:
  - CyfirmaBIDomainITAssetAlerts_CL
version: 1.0.0
name: CYFIRMA - Brand Intelligence - Domain Impersonation High Rule
eventGroupingSettings:
  aggregationKind: AlertPerResult
description: |
  "This analytics rule detects high-risk domain impersonation activity, where newly registered or existing domains closely resemble the legitimate brand name or organizational assets. 
  These suspicious domains may use typosquatting, homoglyphs, or brand keywords to mislead users, steal credentials, or host phishing/malicious content. 
  The domains are identified through CYFIRMA's external threat intelligence feeds and flagged due to potential misuse in impersonation, fraud, or social engineering attacks targeting employees, customers, or partners. 
  Early detection of these domains enables proactive mitigation measures such as domain takedown, DNS blocking, and awareness campaigns."  
query: |
  // High severity-  Brand Intelligence - Domain Impersonation
  let timeFrame = 5m;
  CyfirmaBIDomainITAssetAlerts_CL
  | where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
  | extend
      Description=description,
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      AlertUID=alert_uid,
      UID=uid,
      Domain=domain,
      DRDomain=dr_domain,
      DRSubDomain=dr_sub_domain,
      DomainSquat=signature,
      HostProvider=host_provider,
      RegisteredDate=registered_date,
      CreatedDate=created_date,
      ThreatActor=suspected_threat_actor,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      Domain,
      DRDomain,
      DRSubDomain,
      DomainSquat,
      HostProvider,
      RegisteredDate,
      CreatedDate,
      ThreatActor,
      ProductName,
      ProviderName  
tactics:
- ResourceDevelopment
- InitialAccess
- CommandAndControl
queryPeriod: 5m
kind: Scheduled
{
  "$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/10bdf525-5b89-4a25-933a-e63e73b915f1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/10bdf525-5b89-4a25-933a-e63e73b915f1')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA - High Severity Alert - Malicious Domain Impersonation of Corporate Brand - Domain Squat: {{DomainSquat}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "10bdf525-5b89-4a25-933a-e63e73b915f1",
        "customDetails": {
          "AlertUID": "AlertUID",
          "CreatedDate": "CreatedDate",
          "Description": "Description",
          "Domain": "Domain",
          "DomainSquat": "DomainSquat",
          "DRDomain": "DRDomain",
          "DRSubDomain": "DRSubDomain",
          "FirstSeen": "FirstSeen",
          "HostProvider": "HostProvider",
          "LastSeen": "LastSeen",
          "RegisteredDate": "RegisteredDate",
          "RiskScore": "RiskScore",
          "ThreatActor": "ThreatActor",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This analytics rule detects high-risk domain impersonation activity, where newly registered or existing domains closely resemble the legitimate brand name or organizational assets. \nThese suspicious domains may use typosquatting, homoglyphs, or brand keywords to mislead users, steal credentials, or host phishing/malicious content. \nThe domains are identified through CYFIRMA's external threat intelligence feeds and flagged due to potential misuse in impersonation, fraud, or social engineering attacks targeting employees, customers, or partners. \nEarly detection of these domains enables proactive mitigation measures such as domain takedown, DNS blocking, and awareness campaigns.\"\n",
        "displayName": "CYFIRMA - Brand Intelligence - Domain Impersonation High Rule",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "Domain",
                "identifier": "DomainName"
              }
            ]
          },
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "DomainSquat",
                "identifier": "DomainName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BIDomainImpersonationHighRule.yaml",
        "query": "// High severity-  Brand Intelligence - Domain Impersonation\nlet timeFrame = 5m;\nCyfirmaBIDomainITAssetAlerts_CL\n| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())\n| extend\n    Description=description,\n    FirstSeen=first_seen,\n    LastSeen=last_seen,\n    RiskScore=risk_score,\n    AlertUID=alert_uid,\n    UID=uid,\n    Domain=domain,\n    DRDomain=dr_domain,\n    DRSubDomain=dr_sub_domain,\n    DomainSquat=signature,\n    HostProvider=host_provider,\n    RegisteredDate=registered_date,\n    CreatedDate=created_date,\n    ThreatActor=suspected_threat_actor,\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT'\n| project\n    TimeGenerated,\n    Description,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    AlertUID,\n    UID,\n    Domain,\n    DRDomain,\n    DRSubDomain,\n    DomainSquat,\n    HostProvider,\n    RegisteredDate,\n    CreatedDate,\n    ThreatActor,\n    ProductName,\n    ProviderName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [
          "T1583.001",
          "T1586.002",
          "T1566.002",
          "T1566.001",
          "T1071.003",
          "T1071.001"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1071",
          "T1566",
          "T1583",
          "T1586"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}