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

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."  
tactics:
- Reconnaissance
- ResourceDevelopment
- InitialAccess
requiredDataConnectors:
- dataTypes:
  - CyfirmaBIExecutivePeopleAlerts_CL
  connectorId: CyfirmaBrandIntelligenceAlertsDC
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - High Severity Alert - Executive Impersonation - Suspicious Social Media Account Detected - {{AssetValue}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
incidentConfiguration:
  groupingConfiguration:
    enabled: false
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
  createIncident: true
id: 159d26a1-591c-4f70-b1ca-2843c881aaec
severity: High
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
customDetails:
  TimeGenerated: TimeGenerated
  LastSeen: LastSeen
  RiskScore: RiskScore
  PostedDate: PostedDate
  FirstSeen: FirstSeen
  Impact: Impact
  Recommendation: Recommendation
  AssetValue: AssetValue
  AlertUID: AlertUID
  UID: UID
  AssetType: AssetType
  Description: Description
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
kind: Scheduled
queryPeriod: 5m
name: CYFIRMA - Brand Intelligence - Executive/People Impersonation High Rule
queryFrequency: 5m
triggerThreshold: 0
relevantTechniques:
- T1589.003
- T1585.001
- T1566.002
version: 1.0.1
triggerOperator: gt

ARM