enrich-ioc

name: enrich-ioc description: "Enrich an IOC (IP, domain, hash, URL) with threat intelligence. Use when you need to look up reputation and context for an indicator using GTI and SIEM. Returns threat intel findings, SIEM entity summary, and IOC match status." required_roles: chronicle: roles/chronicle.viewer gti: GTI Standard personas: [tier1-analyst, tier2-analyst, tier3-analyst, threat-hunter, incident-responder]

Enrich IOC Skill

Perform standardized enrichment for a single Indicator of Compromise (IOC) using Google Threat Intelligence (GTI) and Chronicle SIEM.

Inputs

• IOC_VALUE - The indicator value (e.g., "198.51.100.10", "evil-domain.com", "abcdef123456...", "http://bad.url/path")
• IOC_TYPE - The type: "IP Address", "Domain", "File Hash", or "URL"

Workflow

Step 1: GTI Enrichment

Based on IOC_TYPE, call the appropriate GTI tool:

Store key findings in GTI_FINDINGS:

• Reputation score
• Classification (malicious, suspicious, clean)
• Key relationships (contacted domains, IPs, etc.)
• Associated malware families or campaigns

Error Handling: If GTI fails (quota exceeded, IOC not found), note the limitation and proceed with SIEM enrichment.

Step 2: SIEM Entity Lookup

secops-mcp.lookup_entity(entity_value=IOC_VALUE)

Store in SIEM_ENTITY_SUMMARY:

• First/last seen timestamps
• Related alerts
• Associated assets/users

Step 3: SIEM IOC Match Check

secops-mcp.get_ioc_matches()

Check if IOC_VALUE appears in results. Store Yes/No in SIEM_IOC_MATCH_STATUS.

Required Outputs

After completing this skill, you MUST report these outputs:

Quick Reference

GTI Tools:

• get_ip_address_report(ip_address)
• get_domain_report(domain)
• get_file_report(hash)
• get_url_report(url)

SIEM Tools:

• lookup_entity(entity_value)
• get_ioc_matches()