Use case 2 - Cyber Threat Intelligence Feeds

Use case 2 - Cyber Threat Intelligence Feeds

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Use Case 2 - Cyber Threat Intelligence Feeds

Resumen

This use case defines the process for aggregating, curating, enriching, and operationalizing multiple CTI feeds to enhance threat detection and incident response capabilities. It leverages consolidated, reliable, and actionable threat intelligence from Maltiverse, VirusTotal Enterprise, AlienVault OTX, Recorded Future, and MISP, transforming raw IOCs into risk-scored, contextualized intelligence integrated into security controls.

Objetivo

Enhance threat detection and incident response capabilities by leveraging consolidated, reliable, and actionable threat intelligence feeds.

Entradas (Inputs)

  • Raw IOC feeds from multiple providers
  • Organization's industry context, threat landscape, and technology stack
  • Internal security logs and historical observations
  • MITRE ATT&CK framework mappings
  • CVE vulnerability references

Proceso / Flujo de Trabajo

1. Feed Aggregation and Curation

  • Integrate the chosen intelligence feeds into a central platform (e.g., SIEM, TIP).
  • Filter and prioritize feeds based on their:
    • Relevance: Alignment with the organization's industry, threat landscape, and technology stack.
    • Reliability: Reputation of feed providers, verification of IOCs.
    • Timeliness: Frequency of updates and freshness of data.

2. IOC Enrichment and Scoring

  • Risk Scoring: Assign risk scores to IOCs (IP addresses, domains, file hashes, etc.) based on factors like:
    • Source reputation
    • Severity of associated threat activity
    • Prevalence across multiple feeds (confidence indicator)
    • Internal observations (has this IOC triggered in our environment before?)
  • Contextualization: Enrich IOCs with:
    • Threat actor attribution
    • Malware families or campaigns
    • Tactics, Techniques, and Procedures (TTPs) from the MITRE ATT&CK framework
    • Vulnerability information (e.g., CVE references)

3. Operationalization

  • Automated Detection: Use enriched IOCs with risk scores to configure correlation rules in SIEM, IDS/IPS, firewall, and endpoint security tools.
    • Prioritize alerts based on risk scores for efficient triage.
  • Proactive Threat Hunting: Leverage contextualized IOCs to search historical logs for potential missed attacks (feeds into use-case-07-threat-hunting).
  • Vulnerability Management Integration: Cross-reference threat intelligence with vulnerability scanner results for risk-based prioritization of patching (feeds into use-case-03-vulnerability-intelligence).

Salidas (Outputs) / Productos

  • Risk-scored and contextualized IOC database
  • SIEM correlation rules based on enriched IOCs
  • Threat hunting leads from contextualized intelligence
  • Vulnerability prioritization recommendations
  • Feed quality metrics and value assessments

Fuentes de Inteligencia

  • Maltiverse - IoC threat scoring and enrichment
  • VirusTotal Enterprise - Multi-engine malware analysis and IOC lookup
  • AlienVault OTX - Community-driven threat intelligence
  • Recorded Future Intelligence - Premium threat intelligence with predictive analytics
  • MISP - Open-source threat intelligence sharing platform

Herramientas

  • Maltiverse
  • VirusTotal Enterprise
  • AlienVault OTX
  • Recorded Future Intelligence
  • MISP

Métricas de Éxito

  • Reduced False Positives: Risk-based filtering and contextualization helps minimize noise and analyst fatigue.
  • Improved Detection Accuracy: High-confidence IOCs and insights on threat context enhance the effectiveness of security controls.
  • Faster Incident Response: Enriched IOCs and risk scores provide analysts with the information needed to understand alerts and take decisive actions.
  • Proactive Defense: Intelligence-driven hunting and vulnerability prioritization enable proactive hardening of the environment.

Additional Considerations

  • Feedback Loop: Implement a process to evaluate the value of feeds. Track how use of the intelligence improves detection and response, and identify any need for adjustments.
  • Threat Sharing: If applicable, consider integrating the MISP instance to contribute to and benefit from community-driven threat intelligence (see use-case-10-threat-intel-sharing).

Integración con Otros Use Cases

Use Case Relationship
use-case-00-keywords-repository Brand/domain keywords filter feed relevance
use-case-01-intelligence-platform-alerts Feed IOCs enrich platform alert context
use-case-03-vulnerability-intelligence Cross-reference feeds with vulnerability data
use-case-05-daily-cti-report High-priority IOCs surface in daily reports
use-case-07-threat-hunting Contextualized IOCs drive hunting hypotheses
use-case-09-mitre-ecommerce-retail TTP mappings inform sector-specific detection
use-case-10-threat-intel-sharing MISP integration enables bi-directional sharing

Referencias

Themes