TROJ_Generic.DIF

October 08, 2012
 Analysis by: Christopher Daniel So
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • 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 creates registry entries to enable its automatic execution at every system startup.

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.

  TECHNICAL DETAILS

File Size:

3,366,146 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

31 Aug 2009

Arrival Details

This Trojan may be dropped by other malware.

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

Installation

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

  • %System Root%\Arquivos de programas\Java(TM).exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Autostart Technique

This Trojan creates the following registry entries to enable automatic execution of dropped component at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Java(TM) = "%System Root%\Arquivos de programas\Java(TM).exe"

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:

  • http://www.banrisul.com.br
  • http://www.bradesco.com.br
  • http://www.bradescoempresas.com.br/i4
  • http://www.bradescoempresas.com.br/index.asp
  • http://www.bradescopessoajuridica.com.br
  • http://www.bradescoprime.com.br
  • http://www.caixa.com.br
  • http://www.caixa.gov.br
  • http://www.itau.com.br
  • http://www.itaupersonnalite.com.br/index.jsp
  • http://www.nossacaixa.com.br/Paginas/NossaCaixa.aspx
  • http://www.santander.com.br/portal/gsb/script/templates/GCMRequest.do?page=3340
  • http://www.unibanco.com.br/vste/_exc/_hom/index.asp
  • http://www.unibanco.com/vste/_exc/_hom/index.asp
  • https://netbanking2.banespa.com.br
  • https://rie.secureweb.com.br/
  • https://www.cetelem.com.br/wps/portal/cetelem/normal/NL/login
  • https://www.credicardciti.com.br/portals/credicardportal/cadastrese/login.jsp
  • https://www.credicarditau.com.br/portals/credicardportal/cadastrese/login.jsp
  • https://www.latinamerica.citibank.co4
  • https://www.latinamerica.citibank.com/BRGCB/JPS/portal/Index.do
  • https://www.secureweb.com.br/
  • https://wwwss.bradesco.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.

Stolen Information

This Trojan saves the stolen information in the following file:

  • %System Root%\pcinf.txt

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other Details

Based on analysis of the codes, it has the following capabilities:

  • It drops the following file(s) in the Windows Common Startup folder to enable its automatic execution at every system startup:
    • Java(TM).exe
  • It sends the stolen information to the following remote site(s):
    • www.{BLOCKED}otal.com/flogkl/listas/petro/contar.php

Variant Information

This Trojan has the following MD5 hashes:

  • 627c8bdb6b662c2ceaaf42a68816d7c1

It has the following SHA1 hashes:

  • 247641b7433d8e0648b7a75e2901731206970405

  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

Identify and terminate files detected as TROJ_Generic.DIF

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • Java(TM) = %System Root%\Arquivos de programas\Java(TM).exe

Step 4

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.
  • %System Root%\pcinf.txt

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_Generic.DIF. 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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