TROJ_ZBOT.BWF

This Trojan attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data. Once users access any of the monitored sites, it starts logging keystrokes. It attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.

Infection Points

This Trojan arrives as a file downloaded from the following URLs:

• http://{BLOCKED}line.com/f_32thg2ihfloeil/pxbot.exe

Installation

This Trojan drops the following copies of itself into the affected system:

• %Application Data%\{random1}\{random}.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It drops the following non-malicious files:

• %Application Data%\{random2}\{random}.yzy

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It creates the following folders:

• %Application Data%\{random1}
• %Application Data%\{random2}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It injects itself into the following processes as part of its memory residency routine:

• explorer.exe

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{56E358FA-8BE4-7EF8-9E04-6D2D640BB6E7} = %Application Data%\{random1}\{random}.exe

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random}

Information Theft

This Trojan monitors the Internet Explorer (IE) activities of the affected system, specifically the address bar or title bar. It recreates a legitimate website with a spoofed login page if a user visits banking sites with the following strings in the address bar or title bar:

• !*.microsoft.com/*
• !http://*
• !http://*myspace.com*
• !http://*odnoklassniki.ru/*
• !http://vkontakte.ru/*
• @*/atl.osmp.ru/*
• @*/login.osmp.ru/*
• http://www.bankofscotlandhalifax-online.co.uk/
• http://www.halifax.co.uk/onlineservices/login.asp*
• http://www.hsbc.co.uk/1/2*
• https://banking.bankofscotlandhalifax-online.co.uk/*
• https://banking.halifax-online.co.uk/*
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/argdvhge.js
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/bdfsghwe.js
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/crjfkmkss.js
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/d56dged.js
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/y.php?ct=
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/y.php?f=1&ct=
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/y.php?f=4&ct=
• https://hliksdata.ws/f2_32hit8ughoiewhdshui3/sp1/y.php?f=5&ct=
• https://ibank.barclays.co.uk/*
• https://www.bankofscotlandhalifax-online.co.uk/*
• https://www.halifax-online.co.uk/*
• https://www.hsbc.co.uk/1/2*

It attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data.

It accesses the following site to download its configuration file:

• http://{BLOCKED}line.com/f_32thg2ihfloeil/yif3hj373959fd/up2/mxconfig.bin
• http://{BLOCKED}line.com/ups/dcfg1.bin

Once users access any of the monitored sites, it starts logging keystrokes.

Note that the contents of the file, hence the list of websites to monitor, may change any time.

It attempts to steal information from the following banks and/or other financial institutions:

• Barclays
• HSBC
• Halifax
• Microsoft
• Myspace
• OSPM
• Odnoklassniki
• Vkontakte

Stolen Information

This Trojan sends the gathered information via HTTP POST to the following URL:

• http://{BLOCKED}line.com/f_32thg2ihfloeil/yif3hj373959fd/gate_38g72fugh32ufi.php

Other Details

This Trojan did not exhibit backdoor routines during testing.

Variant Information

This Trojan has the following MD5 hashes:

• 4cf92a6ee4c39a262ad4cfc60feca748

It has the following SHA1 hashes:

• 8a85225fa163f7dd72175f1b602663711d2449c6