APT / THREAT GROUP
JSOutProx
2
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 known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.
External References
Quick Facts
TypeAPT / Threat Group
Aliases2
Also Known As
JSOutProxwin.jsoutprox
External Intelligence
Malpedia: win.jsoutproxResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.