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mukul975 c21af3347e Complete folder anatomy for all 649 cybersecurity skills + update LICENSE to Mahipal
- Add scripts/agent.py and references/api-reference.md to all remaining skills
- Update all 648 LICENSE files: copyright now reads 'Mahipal'
- Add implementing-security-monitoring-with-datadog (new skill with full anatomy)
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2026-03-11 00:22:12 +01:00

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API Reference: Adversary Infrastructure Tracking

crt.sh (Certificate Transparency)

GET https://crt.sh/?q=%.example.com&output=json
Field Description
issuer_name Certificate issuer
name_value SANs / common names
serial_number Certificate serial
not_before / not_after Validity period

URLhaus API

POST https://urlhaus-api.abuse.ch/v1/host/
Body: host=example.com

Returns malicious URLs hosted on the domain.

ThreatFox API

POST https://threatfox-api.abuse.ch/api/v1/
Body: {"query": "search_ioc", "search_term": "1.2.3.4"}
Field Description
ioc IOC value
threat_type botnet_cc, payload_delivery, etc.
malware Associated malware family
tags IOC tags

Pivoting Techniques

Pivot Method
Certificate SANs crt.sh wildcard search
Shared IP PassiveTotal, VirusTotal
WHOIS registrant WHOIS history
DNS history PassiveDNS (Farsight, CIRCL)
JARM fingerprint TLS server fingerprinting
HTTP response hash Favicon hash, body hash

Infrastructure Relationships

Edge Type Description
shared_certificate Same TLS cert on different hosts
shared_ip Multiple domains on same IP
shared_registrant Same WHOIS registrant
shared_nameserver Same NS records

MITRE ATT&CK

  • T1583 - Acquire Infrastructure
  • T1584 - Compromise Infrastructure