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Malware

JSOutProx

JSOutProx is a sophisticated attack framework built using both Javascript and .NET.

JSOutProx is a Windows malware family operated by SOLAR SPIDER.

Background

JSOutProx is an advanced attack framework constructed from a mix of Javascript and .NET. It relies on .NET (de)serialization to communicate with a Javascript file that serves as the core module executing on the victim's machine. After running on the target, the framework is able to load multiple plugins that carry out further malicious actions.

Source: Malpedia (Fraunhofer FKIE).