TSPY_ZBOT.QXC

This spyware drops copies of itself on the affected system. It also creates folders in which to drop the files it carries, and injects itself into running processes.

It attempts to access certain websites in order to download configuration files.

This spyware modifies the Internet Explorer Zone Settings.

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 spyware arrives as a file downloaded from the following URLs:

• http://{BLOCKED}4.{BLOCKED}3.44.42/~heheheyo/forum/exe.exe

Installation

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

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

(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 drops the following files:

• %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 spyware 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 spyware adds the following registry keys as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
{random key}

Web Browser Home Page and Search Page Modification

This spyware modifies the Internet Explorer Zone Settings.

Information Theft

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

• http://{BLOCKED}4.{BLOCKED}3.44.42/~heheheyo/forum/forum.bin

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:

• https://www.gruposantander.es/*
• !*/login.osmp.ru/*
• !*/atl.osmp.ru/*

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:

• Santander
• OSMP

Stolen Information

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

• http://{BLOCKED}4.{BLOCKED}3.44.42/~heheheyo/forum/post_now.php

Other Details

This spyware did not exhibit backdoor routines during testing.

Variant Information

This spyware has the following MD5 hashes:

• fca228403cca73e8311278e7889cda47
• 1e113b4c6b9f4e3357fc4496ad4c2fd3
• ccb89fafeb738a19350e0bcb39376f64

It has the following SHA1 hashes:

• 8567a5ba43c66fba1d65c9a6a9a5cc04ffbc6c0d
• 95de9f4973e4752ad079dec7c3e91152ee5c84a0
• ada4846b5b13235711499f599d4764e536cd19cd