All news with #ja4 tag

JA4 Client Fingerprinting Enhances VirusTotal Hunting

🔍 VirusTotal has added JA4 client fingerprinting to improve malware tracking and analysis. By extracting stable characteristics from the TLS Client Hello — including TLS version, cipher suites, extensions, and ALPN — JA4 is designed to be resilient to the extension randomization that reduced JA3's reliability. Analysts can pivot on these fingerprints using the platform's behavior_network modifier, run wildcard queries for partial matches, and automate detections with YARA rules that leverage the vt module.