MALWARE FAMILY
JSOutProx
Internal ID: win.jsoutprox
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
JSOutProx is a sophisticated attack framework built using both Javascript and .NET. It uses the .NET (de)serialization feature to interact with a Javascript file which is the core module running on a victim machine. Once the malware is run on the victim, the framework can load several plugins performing additional malicious activities on the target.
Threat Analysis
JSOutProx 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
win.jsoutprox
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.