CYFIRMA - Brand Intelligence - ExecutivePeople Impersonation High Rule

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Id	159d26a1-591c-4f70-b1ca-2843c881aaec
Rulename	CYFIRMA - Brand Intelligence - Executive/People Impersonation High Rule
Description	“This rule detects potential impersonation of executive or high-profile individuals across digital platforms such as social media. Such impersonation can be used to mislead stakeholders, perform social engineering attacks, or cause reputational damage to the organization. Timely detection is crucial to assess risk and take down malicious profiles to protect brand and executive identity.”
Severity	High
Tactics	Reconnaissance ResourceDevelopment InitialAccess
Techniques	T1589.003 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/BIExecutivePeopleImpersonationHighRule.yaml
Version	1.0.1
Arm template	159d26a1-591c-4f70-b1ca-2843c881aaec.json

KQL

// High severity - Executive/People Impersonation
let timeFrame = 5m;
CyfirmaBIExecutivePeopleAlerts_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,
    AssetType=asset_type,
    AssetValue=asset_value,
    Impact=impact,
    Recommendation=recommendation,
    PostedDate=posted_date,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    AssetType,
    AssetValue,
    Impact,
    Recommendation,
    PostedDate,
    ProductName,
    ProviderName

YAML

name: CYFIRMA - Brand Intelligence - Executive/People Impersonation High Rule
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
  alertDisplayNameFormat: 'CYFIRMA - High Severity Alert - Executive Impersonation - Suspicious Social Media Account Detected - {{AssetValue}} '
  alertDescriptionFormat: '{{Description}} '
id: 159d26a1-591c-4f70-b1ca-2843c881aaec
requiredDataConnectors:
- connectorId: CyfirmaBrandIntelligenceAlertsDC
  dataTypes:
  - CyfirmaBIExecutivePeopleAlerts_CL
severity: High
triggerThreshold: 0
version: 1.0.1
description: |
  "This rule detects potential impersonation of executive or high-profile individuals across digital platforms such as social media. 
  Such impersonation can be used to mislead stakeholders, perform social engineering attacks, or cause reputational damage to the organization. 
  Timely detection is crucial to assess risk and take down malicious profiles to protect brand and executive identity."  
relevantTechniques:
- T1589.003
- T1585.001
- T1566.002
kind: Scheduled
queryPeriod: 5m
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: false
    reopenClosedIncident: false
    matchingMethod: AllEntities
    lookbackDuration: PT5H
tactics:
- Reconnaissance
- ResourceDevelopment
- InitialAccess
customDetails:
  AlertUID: AlertUID
  LastSeen: LastSeen
  UID: UID
  AssetType: AssetType
  PostedDate: PostedDate
  Impact: Impact
  Description: Description
  FirstSeen: FirstSeen
  Recommendation: Recommendation
  RiskScore: RiskScore
  AssetValue: AssetValue
  TimeGenerated: TimeGenerated
queryFrequency: 5m
status: Available
triggerOperator: gt
query: |
  // High severity - Executive/People Impersonation
  let timeFrame = 5m;
  CyfirmaBIExecutivePeopleAlerts_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,
      AssetType=asset_type,
      AssetValue=asset_value,
      Impact=impact,
      Recommendation=recommendation,
      PostedDate=posted_date,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      Recommendation,
      PostedDate,
      ProductName,
      ProviderName  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BIExecutivePeopleImpersonationHighRule.yaml

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/159d26a1-591c-4f70-b1ca-2843c881aaec')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/159d26a1-591c-4f70-b1ca-2843c881aaec')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA - High Severity Alert - Executive Impersonation - Suspicious Social Media Account Detected - {{AssetValue}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "159d26a1-591c-4f70-b1ca-2843c881aaec",
        "customDetails": {
          "AlertUID": "AlertUID",
          "AssetType": "AssetType",
          "AssetValue": "AssetValue",
          "Description": "Description",
          "FirstSeen": "FirstSeen",
          "Impact": "Impact",
          "LastSeen": "LastSeen",
          "PostedDate": "PostedDate",
          "Recommendation": "Recommendation",
          "RiskScore": "RiskScore",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This rule detects potential impersonation of executive or high-profile individuals across digital platforms such as social media. \nSuch impersonation can be used to mislead stakeholders, perform social engineering attacks, or cause reputational damage to the organization. \nTimely detection is crucial to assess risk and take down malicious profiles to protect brand and executive identity.\"\n",
        "displayName": "CYFIRMA - Brand Intelligence - Executive/People Impersonation High 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/BIExecutivePeopleImpersonationHighRule.yaml",
        "query": "// High severity - Executive/People Impersonation\nlet timeFrame = 5m;\nCyfirmaBIExecutivePeopleAlerts_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    AssetType=asset_type,\n    AssetValue=asset_value,\n    Impact=impact,\n    Recommendation=recommendation,\n    PostedDate=posted_date,\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    PostedDate,\n    ProductName,\n    ProviderName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [
          "T1589.003",
          "T1585.001",
          "T1566.002"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess",
          "Reconnaissance",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1566",
          "T1585",
          "T1589"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}