CYFIRMA - Brand Intelligence - Social Media Handle Impersonation Detected Medium Rule

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Id	710f4755-490d-4fa7-aef0-43b5a66edc7b
Rulename	CYFIRMA - Brand Intelligence - Social Media Handle Impersonation Detected Medium Rule
Description	“Detects high-severity alerts related to impersonation of official social media handles associated with your brand. These spoofed accounts may be used for phishing, disinformation, or fraud campaigns, posing significant reputational and security risks.”
Severity	Medium
Tactics	Reconnaissance ResourceDevelopment InitialAccess
Techniques	T1589.003 T1591.002 T1585.001 T1566.002
Required data connectors	CyfirmaBrandIntelligenceAlertsDC
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BISocialMediaHandlerMediumRule.yaml
Version	1.0.0
Arm template	710f4755-490d-4fa7-aef0-43b5a66edc7b.json

KQL

// Medium severity - Social Media Handle Impersonation
let timeFrame = 5m;
CyfirmaBISocialHandlersAlerts_CL 
  | where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())
  | extend
      Description=description,
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      AlertUID=alert_uid,
      UID=uid,
      AssetType=asset_type,
      AssetValue=asset_value,
      Impact=impact,
      Recommendation=recommendation,
      SourceSype=source_type,
      ProviderName="CYFIRMA",
      ProductName="DeCYFIR/DeTCT"
  | project 
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      Recommendation,
      SourceSype,
      ProductName,
      ProviderName

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BISocialMediaHandlerMediumRule.yaml
triggerThreshold: 0
severity: Medium
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 5h
    enabled: false
    matchingMethod: AllEntities
    reopenClosedIncident: false
queryFrequency: 5m
status: Available
customDetails:
  TimeGenerated: TimeGenerated
  FirstSeen: FirstSeen
  Recommendation: Recommendation
  RiskScore: RiskScore
  AssetType: AssetType
  LastSeen: LastSeen
  Impact: Impact
  AlertUID: AlertUID
  SourceSype: SourceSype
  Description: Description
  AssetValue: AssetValue
  UID: UID
relevantTechniques:
- T1589.003
- T1591.002
- T1585.001
- T1566.002
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - Medium Severity Social Media Handle Impersonation Detected - {{AssetType}}  :  {{AssetValue}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
triggerOperator: gt
id: 710f4755-490d-4fa7-aef0-43b5a66edc7b
requiredDataConnectors:
- connectorId: CyfirmaBrandIntelligenceAlertsDC
  dataTypes:
  - CyfirmaBISocialHandlersAlerts_CL
version: 1.0.0
name: CYFIRMA - Brand Intelligence - Social Media Handle Impersonation Detected Medium Rule
eventGroupingSettings:
  aggregationKind: AlertPerResult
description: |
  "Detects high-severity alerts related to impersonation of official social media handles associated with your brand. 
  These spoofed accounts may be used for phishing, disinformation, or fraud campaigns, posing significant reputational and security risks."  
query: |
  // Medium severity - Social Media Handle Impersonation
  let timeFrame = 5m;
  CyfirmaBISocialHandlersAlerts_CL 
    | where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())
    | extend
        Description=description,
        FirstSeen=first_seen,
        LastSeen=last_seen,
        RiskScore=risk_score,
        AlertUID=alert_uid,
        UID=uid,
        AssetType=asset_type,
        AssetValue=asset_value,
        Impact=impact,
        Recommendation=recommendation,
        SourceSype=source_type,
        ProviderName="CYFIRMA",
        ProductName="DeCYFIR/DeTCT"
    | project 
        TimeGenerated,
        Description,
        RiskScore,
        FirstSeen,
        LastSeen,
        AlertUID,
        UID,
        AssetType,
        AssetValue,
        Impact,
        Recommendation,
        SourceSype,
        ProductName,
        ProviderName  
tactics:
- Reconnaissance
- ResourceDevelopment
- InitialAccess
queryPeriod: 5m
kind: Scheduled

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/710f4755-490d-4fa7-aef0-43b5a66edc7b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/710f4755-490d-4fa7-aef0-43b5a66edc7b')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA - Medium Severity Social Media Handle Impersonation Detected - {{AssetType}}  :  {{AssetValue}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "710f4755-490d-4fa7-aef0-43b5a66edc7b",
        "customDetails": {
          "AlertUID": "AlertUID",
          "AssetType": "AssetType",
          "AssetValue": "AssetValue",
          "Description": "Description",
          "FirstSeen": "FirstSeen",
          "Impact": "Impact",
          "LastSeen": "LastSeen",
          "Recommendation": "Recommendation",
          "RiskScore": "RiskScore",
          "SourceSype": "SourceSype",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"Detects high-severity alerts related to impersonation of official social media handles associated with your brand. \nThese spoofed accounts may be used for phishing, disinformation, or fraud campaigns, posing significant reputational and security risks.\"\n",
        "displayName": "CYFIRMA - Brand Intelligence - Social Media Handle Impersonation Detected Medium Rule",
        "enabled": true,
        "entityMappings": null,
        "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/BISocialMediaHandlerMediumRule.yaml",
        "query": "// Medium severity - Social Media Handle Impersonation\nlet timeFrame = 5m;\nCyfirmaBISocialHandlersAlerts_CL \n  | where severity == 'High' 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      AssetType=asset_type,\n      AssetValue=asset_value,\n      Impact=impact,\n      Recommendation=recommendation,\n      SourceSype=source_type,\n      ProviderName=\"CYFIRMA\",\n      ProductName=\"DeCYFIR/DeTCT\"\n  | project \n      TimeGenerated,\n      Description,\n      RiskScore,\n      FirstSeen,\n      LastSeen,\n      AlertUID,\n      UID,\n      AssetType,\n      AssetValue,\n      Impact,\n      Recommendation,\n      SourceSype,\n      ProductName,\n      ProviderName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [
          "T1589.003",
          "T1591.002",
          "T1585.001",
          "T1566.002"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess",
          "Reconnaissance",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1566",
          "T1585",
          "T1589",
          "T1591"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}