TSPY_BANKER.WQL

 Analysis by: Sabrina Lei Sioting

 ALIASES:

Trojan.Win32.Inject.gtxn (Kaspersky), RD/PWS-Banker!cx (McAfee), VirTool:Win32/CeeInject.FQ (Microsoft), Trojan.Zbot (Symantec),

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


This spyware retrieves specific information from the affected system.

  TECHNICAL DETAILS

File Size:

994,304 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

08 Jan 2014

Payload:

Downloads files

Arrival Details

This spyware may be downloaded from the following remote sites:

  • http://{BLOCKED}9.117/printf/rw3.html

Installation

This spyware drops the following non-malicious file:

  • %All User Profile%\{two letter}

It adds the following processes:

  • %Program Files%\Internet Explorer\iexplore.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

It injects itself into the following processes running in the affected system's memory:

  • iexplore.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
winxp = "regsvr32 /s "%User Profile%\All Users\WINXP.jpg""

Download Routine

This spyware connects to the following URL(s) to download its component file(s):

  • http://{BLOCKED}1.net/prs/qs.html
  • http://{BLOCKED}p.net/prs/es.html
  • http://{BLOCKED}p.net/prs/kp.html
  • http://{BLOCKED}x02.net/prs/es.html

Information Theft

This spyware 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:

  • bancobrasil
  • bb.com.br
  • caixa economica federal
  • http://www.bb.com.br
  • http://www.cef.com.br
  • http://www.itau.com.br
  • http://www.santanderempresarial.com.br
  • http://www.tam.com.br
  • http://www.voegol.com.br
  • inteligentes
  • linhas
  • santander
  • santandernetibe

It retrieves the following information from the affected system:

  • Username
  • Password

Stolen Information

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

  • http://{BLOCKED}28.142/listas/lg/cards/po.php

  SOLUTION

Minimum Scan Engine:

9.700

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • winxp = "regsvr32 /s "%User Profile%\All Users\WINXP.jpg""

Step 4

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result. %User Profile%\{two letter}

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_BANKER.WQL. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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