Cyren High-Risk URL Indicators | Microsoft Sentinel Analytic Rules

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Id	6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7
Rulename	Cyren High-Risk URL Indicators
Description	Detects high-risk URL indicators (risk score >= 80) from Cyren malware URL threat intelligence feeds in the last 24 hours. These URLs are associated with malware distribution, phishing campaigns, or other malicious content hosting.
Severity	High
Tactics	InitialAccess Execution
Techniques	T1566 T1189
Required data connectors	CyrenThreatIntel
Kind	Scheduled
Query frequency	1h
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyrenThreatIntelligence/Analytic%20Rules/Cyren%20-%20High%20Risk%20URL%20Indicators.yaml
Version	1.0.0
Arm template	6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7.json

KQL

Cyren_Indicators_CL
| where TimeGenerated > ago(1d)
| where isnotempty(url_s)
| extend Risk = toint(risk_d)
| where Risk >= 80
| summarize 
    DetectionCount = count(), 
    MaxRisk = max(Risk), 
    Categories = make_set(category_s) 
  by URL = url_s, Domain = domain_s, Source = source_s
| where DetectionCount >= 1
| extend 
    MaliciousURL = URL,
    ThreatCategories = strcat_array(Categories, ", ")

YAML

status: Available
triggerThreshold: 0
relevantTechniques:
- T1566
- T1189
queryPeriod: 1d
tactics:
- InitialAccess
- Execution
name: Cyren High-Risk URL Indicators
customDetails:
  Domain: Domain
  Categories: ThreatCategories
  Source: Source
  RiskScore: MaxRisk
  DetectionCount: DetectionCount
description: |
  'Detects high-risk URL indicators (risk score >= 80) from Cyren malware URL threat intelligence feeds in the last 24 hours.
  These URLs are associated with malware distribution, phishing campaigns, or other malicious content hosting.'
eventGroupingSettings:
  aggregationKind: AlertPerResult
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyrenThreatIntelligence/Analytic%20Rules/Cyren%20-%20High%20Risk%20URL%20Indicators.yaml
kind: Scheduled
suppressionEnabled: false
suppressionDuration: 1h
entityMappings:
- fieldMappings:
  - columnName: MaliciousURL
    identifier: Url
  entityType: URL
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: Selected
    reopenClosedIncident: false
    groupByEntities:
    - URL
    lookbackDuration: 1d
    enabled: true
  createIncident: true
triggerOperator: gt
id: 6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7
severity: High
version: 1.0.0
requiredDataConnectors:
- connectorId: CyrenThreatIntel
  dataTypes:
  - Cyren_Indicators_CL
query: |
  Cyren_Indicators_CL
  | where TimeGenerated > ago(1d)
  | where isnotempty(url_s)
  | extend Risk = toint(risk_d)
  | where Risk >= 80
  | summarize 
      DetectionCount = count(), 
      MaxRisk = max(Risk), 
      Categories = make_set(category_s) 
    by URL = url_s, Domain = domain_s, Source = source_s
  | where DetectionCount >= 1
  | extend 
      MaliciousURL = URL,
      ThreatCategories = strcat_array(Categories, ", ")
queryFrequency: 1h

ARM

{
  "$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/6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7')]",
      "properties": {
        "alertRuleTemplateName": "6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7",
        "customDetails": {
          "Categories": "ThreatCategories",
          "DetectionCount": "DetectionCount",
          "Domain": "Domain",
          "RiskScore": "MaxRisk",
          "Source": "Source"
        },
        "description": "'Detects high-risk URL indicators (risk score >= 80) from Cyren malware URL threat intelligence feeds in the last 24 hours.\nThese URLs are associated with malware distribution, phishing campaigns, or other malicious content hosting.'\n",
        "displayName": "Cyren High-Risk URL Indicators",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "MaliciousURL",
                "identifier": "Url"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "URL"
            ],
            "lookbackDuration": "P1D",
            "matchingMethod": "Selected",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyrenThreatIntelligence/Analytic%20Rules/Cyren%20-%20High%20Risk%20URL%20Indicators.yaml",
        "query": "Cyren_Indicators_CL\n| where TimeGenerated > ago(1d)\n| where isnotempty(url_s)\n| extend Risk = toint(risk_d)\n| where Risk >= 80\n| summarize \n    DetectionCount = count(), \n    MaxRisk = max(Risk), \n    Categories = make_set(category_s) \n  by URL = url_s, Domain = domain_s, Source = source_s\n| where DetectionCount >= 1\n| extend \n    MaliciousURL = URL,\n    ThreatCategories = strcat_array(Categories, \", \")\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P1D",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution",
          "InitialAccess"
        ],
        "techniques": [
          "T1189",
          "T1566"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}