high
Summary
Summary
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| How it spreads |
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|---|---|
| Affected operating systems | Windows |
| Protection available since | 1 July 2007 11:57:11 (GMT) |
| Last updated | 31 July 2007 20:33:34 (GMT) |
| Detected by | All Sophos products |
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Action
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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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