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CYFIRMA - Data Breach and Web Monitoring - Ransomware Exposure Detected Rule

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Ided1aabc1-e1c1-42f4-abac-fd5637730f13
RulenameCYFIRMA - Data Breach and Web Monitoring - Ransomware Exposure Detected Rule
Description“This analytics rule detects high-severity ransomware threats targeting the organization, as reported by CYFIRMA’s Dark Web and Data Breach Intelligence feeds.

The alert is generated when threat actors post, claim, or associate ransomware activity with corporate domains, brands, or subsidiaries, indicating a potential data breach, extortion attempt, or unauthorized access.”
SeverityHigh
TacticsInitialAccess
Exfiltration
TechniquesT1566.001
T1566.002
T1566.003
Required data connectorsCyfirmaDigitalRiskAlertsConnector
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Digital Risk/Analytic Rules/DBWMRansomwareExposureDetectedHighRule.yaml
Version1.0.0
Arm templateed1aabc1-e1c1-42f4-abac-fd5637730f13.json
Deploy To Azure
// High severity - Data Breach and Web Monitoring - Ransomware Exposure Detected
let timeFrame = 5m;
CyfirmaDBWMRansomwareAlerts_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,
    Source=source,
    Impact=impact,
    Recommendation='',
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT',
    AlertTitle=Alert_title,
    ThreatActors= threat_actors
| project
    TimeGenerated,
    Description,
    RiskScore,
    FirstSeen,
    LastSeen,
    AlertUID,
    UID,
    AssetType,
    AssetValue,
    Source,
    Impact,
    Recommendation,
    ProductName,
    ProviderName,
    AlertTitle,
    ThreatActors
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Digital Risk/Analytic Rules/DBWMRansomwareExposureDetectedHighRule.yaml
triggerThreshold: 0
severity: High
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 5h
    enabled: false
    matchingMethod: AllEntities
    reopenClosedIncident: false
queryFrequency: 5m
status: Available
customDetails:
  TimeGenerated: TimeGenerated
  FirstSeen: FirstSeen
  Recommendation: Recommendation
  RiskScore: RiskScore
  AssetType: AssetType
  LastSeen: LastSeen
  Source: Source
  Impact: Impact
  ThreatActors: ThreatActors
  AlertUID: AlertUID
  Description: Description
  AssetValue: AssetValue
  UID: UID
relevantTechniques:
- T1566.001
- T1566.002
- T1566.003
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - High Severity Alert: Ransomware Exposure Detected - {{AlertTitle}} '
  alertDescriptionFormat: '{{Description}} '
  alertDynamicProperties:
  - alertProperty: ProductName
    value: ProductName
  - alertProperty: ProviderName
    value: ProviderName
triggerOperator: gt
id: ed1aabc1-e1c1-42f4-abac-fd5637730f13
requiredDataConnectors:
- connectorId: CyfirmaDigitalRiskAlertsConnector
  dataTypes:
  - CyfirmaDBWMRansomwareAlerts_CL
version: 1.0.0
name: CYFIRMA - Data Breach and Web Monitoring - Ransomware Exposure Detected Rule
eventGroupingSettings:
  aggregationKind: AlertPerResult
description: |
  "This analytics rule detects high-severity ransomware threats targeting the organization, as reported by CYFIRMA's Dark Web and Data Breach Intelligence feeds. 
  The alert is generated when threat actors post, claim, or associate ransomware activity with corporate domains, brands, or subsidiaries, indicating a potential data breach, extortion attempt, or unauthorized access."  
query: |
  // High severity - Data Breach and Web Monitoring - Ransomware Exposure Detected
  let timeFrame = 5m;
  CyfirmaDBWMRansomwareAlerts_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,
      Source=source,
      Impact=impact,
      Recommendation='',
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT',
      AlertTitle=Alert_title,
      ThreatActors= threat_actors
  | project
      TimeGenerated,
      Description,
      RiskScore,
      FirstSeen,
      LastSeen,
      AlertUID,
      UID,
      AssetType,
      AssetValue,
      Source,
      Impact,
      Recommendation,
      ProductName,
      ProviderName,
      AlertTitle,
      ThreatActors  
tactics:
- InitialAccess
- Exfiltration
queryPeriod: 5m
kind: Scheduled
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/ed1aabc1-e1c1-42f4-abac-fd5637730f13')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ed1aabc1-e1c1-42f4-abac-fd5637730f13')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Description}} ",
          "alertDisplayNameFormat": "CYFIRMA - High Severity Alert: Ransomware Exposure Detected - {{AlertTitle}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "ed1aabc1-e1c1-42f4-abac-fd5637730f13",
        "customDetails": {
          "AlertUID": "AlertUID",
          "AssetType": "AssetType",
          "AssetValue": "AssetValue",
          "Description": "Description",
          "FirstSeen": "FirstSeen",
          "Impact": "Impact",
          "LastSeen": "LastSeen",
          "Recommendation": "Recommendation",
          "RiskScore": "RiskScore",
          "Source": "Source",
          "ThreatActors": "ThreatActors",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This analytics rule detects high-severity ransomware threats targeting the organization, as reported by CYFIRMA's Dark Web and Data Breach Intelligence feeds. \nThe alert is generated when threat actors post, claim, or associate ransomware activity with corporate domains, brands, or subsidiaries, indicating a potential data breach, extortion attempt, or unauthorized access.\"\n",
        "displayName": "CYFIRMA - Data Breach and Web Monitoring - Ransomware Exposure Detected Rule",
        "enabled": true,
        "entityMappings": null,
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Digital Risk/Analytic Rules/DBWMRansomwareExposureDetectedHighRule.yaml",
        "query": "// High severity - Data Breach and Web Monitoring - Ransomware Exposure Detected\nlet timeFrame = 5m;\nCyfirmaDBWMRansomwareAlerts_CL\n| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())\n| extend\n    Description=description,\n    FirstSeen=first_seen,\n    LastSeen=last_seen,\n    RiskScore=risk_score,\n    AlertUID=alert_uid,\n    UID=uid,\n    AssetType=asset_type,\n    AssetValue=signature,\n    Source=source,\n    Impact=impact,\n    Recommendation='',\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT',\n    AlertTitle=Alert_title,\n    ThreatActors= threat_actors\n| project\n    TimeGenerated,\n    Description,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    AlertUID,\n    UID,\n    AssetType,\n    AssetValue,\n    Source,\n    Impact,\n    Recommendation,\n    ProductName,\n    ProviderName,\n    AlertTitle,\n    ThreatActors\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [
          "T1566.001",
          "T1566.002",
          "T1566.003"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration",
          "InitialAccess"
        ],
        "techniques": [
          "T1566"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}