Analysis by: Kathleen Notario
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

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 attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.

  TECHNICAL DETAILS

File Size: 9,678,848 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 04 Aug 2010
Payload: Downloads files

Arrival Details

This Trojan may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

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
{malware filename}.exe = {malware path and filename}

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:

  • Banco Bradesco S/A
  • Banco Santander
  • Nossa Caixa Net Banking
  • http://www.bradesco.com.br/
  • http://www.bradescopessoajuridica.com.br/
  • https://bradesconetempresa.com.br/ne/neFrameMaster.asp?CONTROLE=
  • https://bradesconetempresa.com.br/scripts/office.dll/DISPOSITIVO2/VERIFICADISPOSITIVO
  • https://netbanking2.banespa.com.br/IBPF_Home.asp
  • https://netbanking2.banespa.com.br/default.asp?txtAgencia=
  • https://www.santandernet.com.br/default.asp?txtAgencia=
  • https://wwwss.bradesco.com.br/scripts/ib2k1.dll/LOGIN?AGN=

The spoofed login overlaps the legitimate login area of the website, thus tricking the user into thinking that it is part of the IE window. The spoofed login page is located in a fixed area of the legitimate website. The said routine tricks the user into giving out sensitive account-related information. It then logs keystrokes entered by the user in the user name and password fields of the spoofed login page.

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

  • Banco Santander
  • Banespa
  • Bradesco
  • Nossa Caixa

Stolen Information

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

  • http://{BLOCKED}3034.tempsite.ws/appinfo2/webstd/novo/procopspro.php

Variant Information

This Trojan has the following MD5 hashes:

  • 2414f27ed6ec3a489ac825517bba3ca2

It has the following SHA1 hashes:

  • 8a5033a1bd822d7c038f601beeb1da369e2336cd

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.362.06
VSAPI PATTERN Date: 04 Aug 2010
VSAPI PATTERN Date: 8/4/2010 12:00:00 AM

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

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
    • {malware filename}.exe={malware path and filename}

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_BANKER.MFD. 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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