Descrizione Breve

Il trojan downloader Xombe è stato inviato, come allegato di una e-mail, a molti indirizzi il 9 Gennaio 2004. Quando viene eseguito, il trojan si connette ad internet , scarica un'altro trojan e si attiva sul computer della vittima.

Descrizione Dettagliata

l trojan Xombe è stato spedito a molti indirizzi in e-mail simili alla seguente:

From:

windowsupdate@microsoft.com

Subject:

Windows XP Service Pack 1 (Express) - Critical Update.

Window Update has determined that you are running a beta version of Windows XP Service Pack 1 (SP1). To help improve the stability of your computer, Microsoft recommends that you remove the beta version of Windows XP SP1 and re-install Windows XP SP1. If you cannot remove the beta version, you should still reinstall Windows XP SP1.

Windows XP SP1 provides the latest security, reliability, and performance updates to the Windows XP family of operating systems. Windows XP SP1 is designed to ensure Windows XP platform compatibility with newly released software and hardware, and includes updates to resolve issues discovered by customers or by Microsoft's internal testing team.

The maximum download size is approximately 3 MB, however the size of the download and time required may be less for computers that have had updates previously installed.

To minimize the download time needed for installation, setup will only download those files which are required to bring your computer up to date. Windows XP SP1 includes Internet Explorer 6 SP1. Anti-virus software programs may interfere with the installation of Windows XP SP1. Please disable anti-virus software while installing the service pack.

Just run the file winxp_sp1.exe in attach and make sure to restart your PC after installation will be completed.

(c) 2004 Microsoft Corporation. All rights reserved. Terms of Use Privacy Statement

Allegato E-mail

winxp_sp1.exe

Quando viene eseguito, il trojan si connette ad internet , scarica un'altro trojan e si attiva sul computer della vittima.

Rilevazione

F-Secure Anti-Virus è in grado di rilevare il trojan con gli aggiornamenti pubblicati il 9 Gennaio 2004:

[FSAV_Database_Version] Version=2004-01-09_01

Dettagli tecnici: Alexey Podrezov, 9 Gennaio 2004;

F-Secure Corporation