TSPY_ZBOT.SZPA

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}vanced-cfg2.com/monte-karlo/us.exe

Installation

This Trojan drops the following files:

• %User Profile%\Application Data\{random1}\{random file name 1}.exe
• %User Profile%\Application Data\{random2}\{random file name 2}

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

It creates the following folders:

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

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

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

• ctfmon.exe
• dwm.exe
• explorer.exe
• rdpclip.exe
• taskeng.exe
• taskhost.exe
• wscntfy.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
{random CLSID} = "%User Profile%\Application Data\{random1}\{random file name 1}.exe"

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
{random key}

Information Theft

This Trojan accesses the following site to download its configuration file:

• http://{BLOCKED}vanced-cfg3.com/monte-karlo/usdase.db
• http://{BLOCKED}vanced-cfg4.com/monte-karlo/usdase.db
• http://{BLOCKED}vanced-cfg5.com/monte-karlo/usdase.db

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

It attempts to access a website to download a file which contains information where the Trojan can download an updated copy of itself, and where to send its stolen data. This configuration file also contains the following list of targeted bank-related websites from which it steals information:

• http*chase.com/
• https://*chase.com/*
• *wellsfargo.com/
• *online.wellsfargo.com/login*
• *www.bankofamerica.com/*
• *www.bankofamerica.com*
• htt*://www.citi*com/*

The downloaded file contains information where the malware can download an updated copy of itself, and where to send its stolen data.

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:

• Chase
• Wells Fargo
• Bank of America
• Citibank

Stolen Information

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

• http://{BLOCKED}.{BLOCKED}.197.24/~hosting/woops/ttf.php

Other Details

This Trojan did not exhibit backdoor routines during testing.

Variant Information

This Trojan has the following MD5 hashes:

• 1bd1b7192983f78924826e1ff5e8c810

It has the following SHA1 hashes:

• b866064cb704701243c08d793b42ca2d0d7a5a0c