MALWARE FAMILY
Unidentified JS 006 (Winter Wyvern)
Internal ID: js.unidentified_006
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
A script able to list folders and emails in the current Roundcube account, and to exfiltrate email messages to the C&C server by making HTTP requests.
Threat Analysis
Unidentified JS 006 (Winter Wyvern) is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.
External References
Quick Facts
TypeMalware Family
Aliases1
Also Known As
js.unidentified_006
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.