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

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Id	c0afeda7-4832-49a6-8d03-a5d137d513b5
Rulename	CYFIRMA - Data Breach and Web Monitoring - Dark Web Medium 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	Medium
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/DBWMDarkWebMediumRule.yaml
Version	1.0.1
Arm template	c0afeda7-4832-49a6-8d03-a5d137d513b5.json

KQL

// Medium severity - Data Breach and Web Monitoring - Dark Web
let timeFrame = 5m;
CyfirmaDBWMDarkWebAlerts_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=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

version: 1.0.1
eventGroupingSettings:
  aggregationKind: AlertPerResult
queryFrequency: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Digital Risk/Analytic Rules/DBWMDarkWebMediumRule.yaml
name: CYFIRMA - Data Breach and Web Monitoring - Dark Web Medium Rule
triggerThreshold: 0
tactics:
- CredentialAccess
- Collection
- Exfiltration
- Impact
severity: Medium
status: Available
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - CyfirmaDBWMDarkWebAlerts_CL
  connectorId: CyfirmaDigitalRiskAlertsConnector
customDetails:
  Impact: Impact
  TimeGenerated: TimeGenerated
  RiskScore: RiskScore
  AssetValue: AssetValue
  AssetType: AssetType
  Description: Description
  AlertUID: AlertUID
  FirstSeen: FirstSeen
  UID: UID
  LastSeen: LastSeen
id: c0afeda7-4832-49a6-8d03-a5d137d513b5
query: |
  // Medium severity - Data Breach and Web Monitoring - Dark Web
  let timeFrame = 5m;
  CyfirmaDBWMDarkWebAlerts_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=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  
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - Medium Severity Alert: Critical Data Exposure of Enterprise SSO on Dark Web- {{AlertTitle}} '
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
  alertDescriptionFormat: '{{Description}} '
queryPeriod: 5m
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
    lookbackDuration: PT5H
triggerOperator: gt
relevantTechniques:
- T1552.001
- T1555.003
- T1212
- T1119
- T1048
- T1486
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."

ARM