Cyren High-Risk URL Indicators

Back


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 Rules/Cyren - High Risk URL Indicators.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

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

ARM