CYFIRMA - Brand Intelligence - ExecutivePeople Impersonation Medium Rule

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Id	59aa22f2-5b4f-4679-b289-003228255413
Rulename	CYFIRMA - Brand Intelligence - Executive/People Impersonation Medium 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	Medium
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/BIExecutivePeopleImpersonationMediumRule.yaml
Version	1.0.1
Arm template	59aa22f2-5b4f-4679-b289-003228255413.json

KQL

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

YAML

relevantTechniques:
- T1589.003
- T1585.001
- T1566.002
queryPeriod: 5m
triggerOperator: gt
eventGroupingSettings:
  aggregationKind: AlertPerResult
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Brand Intelligence/Analytic Rules/BIExecutivePeopleImpersonationMediumRule.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
severity: Medium
status: Available
kind: Scheduled
triggerThreshold: 0
queryFrequency: 5m
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - Medium Severity Alert - Executive Impersonation - Suspicious Social Media Account Detected - {{AssetValue}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
requiredDataConnectors:
- dataTypes:
  - CyfirmaBIExecutivePeopleAlerts_CL
  connectorId: CyfirmaBrandIntelligenceAlertsDC
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: false
    reopenClosedIncident: false
    matchingMethod: AllEntities
    lookbackDuration: PT5H
id: 59aa22f2-5b4f-4679-b289-003228255413
customDetails:
  FirstSeen: FirstSeen
  UID: UID
  Description: Description
  AlertUID: AlertUID
  Impact: Impact
  AssetValue: AssetValue
  AssetType: AssetType
  RiskScore: RiskScore
  TimeGenerated: TimeGenerated
  PostedDate: PostedDate
  LastSeen: LastSeen
  Recommendation: Recommendation
query: |
  // Medium severity - Executive/People Impersonation
  let timeFrame = 5m;
  CyfirmaBIExecutivePeopleAlerts_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,
      PostedDate=posted_date,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      Recommendation,
      PostedDate,
      ProductName,
      ProviderName  
name: CYFIRMA - Brand Intelligence - Executive/People Impersonation Medium Rule

ARM