W2KM_BARTALEX.CI

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

Arrival Details

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

Installation

This Trojan drops the following files:

• %User Temp%\{random number}.bat
• %User Temp%\{random number}.vbs
• %User Temp%\{random number}.ps1 - for Windows Vista and above only

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Download Routine

This Trojan accesses the following websites to download files:

• http://{BLOCKED}eal-ca.com/word/dell.exe

It saves the files it downloads using the following names:

• %User Temp%\9.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This Trojan connects to the following possibly malicious URL:

• {BLOCKED}s.com/components/com_wrapper/7777.txt
• {BLOCKED}athica.eu/components/com_wrapper/rara.txt