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

name: Cyren High-Risk URL Indicators
relevantTechniques:
- T1566
- T1189
incidentConfiguration:
  groupingConfiguration:
    groupByEntities:
    - URL
    matchingMethod: Selected
    lookbackDuration: 1d
    reopenClosedIncident: false
    enabled: true
  createIncident: true
eventGroupingSettings:
  aggregationKind: AlertPerResult
requiredDataConnectors:
- dataTypes:
  - Cyren_Indicators_CL
  connectorId: CyrenThreatIntel
id: 6e8f9c4b-2a3b-5c6d-0e1f-d2e3f4a5b6c7
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyrenThreatIntelligence/Analytic%20Rules/Cyren%20-%20High%20Risk%20URL%20Indicators.yaml
entityMappings:
- fieldMappings:
  - identifier: Url
    columnName: MaliciousURL
  entityType: URL
queryPeriod: 1d
version: 1.0.0
customDetails:
  DetectionCount: DetectionCount
  Source: Source
  Categories: ThreatCategories
  RiskScore: MaxRisk
  Domain: Domain
status: Available
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.'
triggerOperator: gt
kind: Scheduled
tactics:
- InitialAccess
- Execution
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, ", ")
severity: High
suppressionDuration: 1h
suppressionEnabled: false
queryFrequency: 1h
triggerThreshold: 0

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"
    }
  ]
}