CYFIRMA - Data Breach and Web Monitoring - Dark Web High Rule

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Id	c3f1f55b-7e54-4416-8afc-7d7876b29b0f
Rulename	CYFIRMA - Data Breach and Web Monitoring - Dark Web High Rule
Description	“Detects critical alerts from CYFIRMA related to sensitive data or credentials leaked on dark web forums. These events often indicate unauthorized access or compromise of enterprise systems, cloud environments, or identity platforms. Immediate investigation is required to assess breach scope and initiate mitigation, including credential resets, access reviews, and threat actor tracking.”
Severity	High
Tactics	CredentialAccess Collection Exfiltration Impact
Techniques	T1552.001 T1555.003 T1212 T1119 T1048 T1486
Required data connectors	CyfirmaDigitalRiskAlertsConnector
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 Digital Risk/Analytic Rules/DBWMDarkWebHighRule.yaml
Version	1.0.1
Arm template	c3f1f55b-7e54-4416-8afc-7d7876b29b0f.json

KQL

// High severity - Data Breach and Web Monitoring - Dark Web
let timeFrame = 5m;
CyfirmaDBWMDarkWebAlerts_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=signature,
    Impact=impact,
    Recommendation='',
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT',
    AlertTitle=Alert_title
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    AssetType,
    AssetValue,
    Impact,
    ProductName,
    ProviderName,
    AlertTitle

YAML

queryPeriod: 5m
query: |
  // High severity - Data Breach and Web Monitoring - Dark Web
  let timeFrame = 5m;
  CyfirmaDBWMDarkWebAlerts_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=signature,
      Impact=impact,
      Recommendation='',
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT',
      AlertTitle=Alert_title
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Impact,
      ProductName,
      ProviderName,
      AlertTitle  
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
  createIncident: true
name: CYFIRMA - Data Breach and Web Monitoring - Dark Web High Rule
eventGroupingSettings:
  aggregationKind: AlertPerResult
queryFrequency: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Digital Risk/Analytic Rules/DBWMDarkWebHighRule.yaml
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - High Severity Alert: Critical Data Exposure of Enterprise SSO on Dark Web - {{AlertTitle}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
description: |
  "Detects critical alerts from CYFIRMA related to sensitive data or credentials leaked on dark web forums. 
  These events often indicate unauthorized access or compromise of enterprise systems, cloud environments, or identity platforms. 
  Immediate investigation is required to assess breach scope and initiate mitigation, including credential resets, access reviews, and threat actor tracking."  
kind: Scheduled
version: 1.0.1
status: Available
severity: High
requiredDataConnectors:
- connectorId: CyfirmaDigitalRiskAlertsConnector
  dataTypes:
  - CyfirmaDBWMDarkWebAlerts_CL
triggerOperator: gt
triggerThreshold: 0
customDetails:
  Description: Description
  UID: UID
  Impact: Impact
  FirstSeen: FirstSeen
  LastSeen: LastSeen
  AssetValue: AssetValue
  RiskScore: RiskScore
  TimeGenerated: TimeGenerated
  AssetType: AssetType
  AlertUID: AlertUID
tactics:
- CredentialAccess
- Collection
- Exfiltration
- Impact
id: c3f1f55b-7e54-4416-8afc-7d7876b29b0f
relevantTechniques:
- T1552.001
- T1555.003
- T1212
- T1119
- T1048
- T1486

ARM