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Anthropic-Cybersecurity-Skills/skills/conducting-malware-incident-response/references/api-reference.md
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API Reference: Malware Incident Response Agent

Overview

Automates malware incident triage: hashes samples, queries VirusTotal and MalwareBazaar for family attribution, retrieves related IOCs from ThreatFox, isolates endpoints via CrowdStrike, and generates IR reports.

Dependencies

Package Version Purpose
requests >=2.28 API communication

CLI Usage

python agent.py --incident-id INC-001 --sample malware.exe --vt-key <key> \
  --cs-token <token> --device-id <id> --output report.json

Key Functions

hash_file(file_path)

Computes SHA-256 and MD5 hashes of a malware sample file.

query_virustotal(file_hash, api_key)

Queries VirusTotal v3 API for detection stats, threat classification, tags, and first seen date.

query_malwarebazaar(file_hash)

Queries MalwareBazaar for sample family attribution, file type, delivery method, and tags.

query_threatfox_iocs(malware_family)

Retrieves IOCs associated with a malware family from ThreatFox (C2 IPs, domains, URLs).

isolate_endpoint_crowdstrike(api_base, token, device_id)

Isolates an infected endpoint using CrowdStrike Falcon network containment API.

search_enterprise_iocs(splunk_url, session_key, iocs)

Searches Splunk for enterprise-wide IOC matches from the malware family.

External APIs Used

API Endpoint Auth Purpose
VirusTotal v3 /api/v3/files/{hash} API key File reputation
MalwareBazaar https://mb-api.abuse.ch/api/v1/ None Sample metadata
ThreatFox https://threatfox-api.abuse.ch/api/v1/ None Family IOCs
CrowdStrike /devices/entities/devices-actions/v2 Bearer token Endpoint isolation