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

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

ARM