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This Trojan is noteworthy as it arrives as an attachment to a spam message professing to be from Bobijou Inc., an online jewelry shop. This message directs recipients to the attachment by indicating it as a file containing their order details. Attackers use a dictionary attack to generate a list of recipients for the spam.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It executes then deletes itself afterward.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

However, as of this writing, the said sites are inaccessible.

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This Trojan executes then deletes itself afterward.

It injects threads into the following normal process(es):

• SVCHOST.EXE

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}tov.com/pusk.exe
• http://{BLOCKED}plyaga.ru/pusk.exe
• http://{BLOCKED}yeyayca.ru/pusk.exe

It saves the files it downloads using the following names:

• %User Temp%\pusk.exe - detected by live casino online as TROJ_FAKEAV.ZZJ

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}rs.net/f/g.php

However, as of this writing, the said sites are inaccessible.

NOTES:

It bears the icon of the following application:

• PDF document