TSPY_BANKER.BOB

October 08, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

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:

3,961,344 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

01 Feb 2011

Arrival Details

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This spyware drops the following files:

  • %Windows%\WRS.txt
  • %Windows%\Noteped.exe

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
G-Buster Browser Defense = %WINDOWS%\Noteped.exe

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:

  • Banco Real ou Santander
  • Banco do Brasil
  • Bradesco
  • Caixa Economica Federal
  • Unibanco ou Itau
  • http://itau.com.br
  • http://www.itau.com.br
  • http://www.zcredconsig.com.br
  • https://internetbanking.caixa.gov.br
  • https://internetbanking.caixa.gov.br
  • https://ww8.banrisul.com.br
  • https://www2.bancobrasil.com.br

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 Caixa
  • Banco Itau
  • Banco Santander
  • Banco do Brasil
  • Banrisul
  • Bradesco
  • Caixa Economica Federal
  • Unibanco
  • ZCRED

Stolen Information

This spyware saves the stolen information in the following file:

  • %Windows%\WRS.txt

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

Other Details

This spyware did not exhibit propagation routines during testing.

It did not exhibit download routines during testing.

It did not exhibit backdoor routines during testing.

  SOLUTION

Minimum Scan Engine:

8.900

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • G-Buster Browser Defense = %Windows%\Noteped.exe

Step 3

Search and delete this file

[ Learn More ]
There may be some component 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.
%Windows%\WRS.txt
%Windows%\Noteped.exe

Step 4

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