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Fox

Classification

Category:

Trojan

Aliases:

  • Fox
  • FoxJS/Fox
  • Trojan.JS.Wipe

Summary

This is a simple script trojan that attempt to delete files when executed.

Removal

Technical Details

Fox is a simple trojan that attempts to exploit a vulnerability in Internet Explorer to execute. When executed the trojan attempts to delete critical system files, for example:

  • C:\WINDOWS\SYSTEM.INI
  • C:\WINDOWS\WIN.INI
  • C:\WINDOWS\COMMAND.COM
  • C:\COMMAND.COM

The vulnerability that the trojan exploits is known as scriptlet.typelib Vulnerability (MS99-032/CVE-1999-0668). Further details, including a fix, is available from Microsoft:

https://www.microsoft.com/technet/Security/Bulletin/MS99-032.mspx

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