Troj/JSXor-Gen

Category: Viruses and Spyware
Type: Trojan
Prevalence: Small Number of Reports

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Troj/JSXor-Gen is a JavaScript downloader Trojan which attempts to exploit a buffer overflow vulnerabilty to download and run executable code.

Troj/JSXor-Gen is a JavaScript downloader Trojan which attempts to exploit a buffer overflow vulnerabilty to download and run executable code.

Troj/JSXor-Gen typically arrives via HTML content within spam email messages, or by browsing websites whose HTML pages contain the script, or link to the script.

The Troj/JSXor-Gen script first decodes an encrypted string and writes it to the current page via document.write. This decoded content is another JavaScript (detected seperately as JS/DlrShl-A and Mal/JSShell-B) which attempts to exploit a vulnerability associated with Windows Media Player to run executable code. See Microsoft Security Bulletin MS06-006.

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