Analysis by: Marfel Tiamzon

 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This spyware 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. 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.

  TECHNICAL DETAILS

File Size: 94,720 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 09 Oct 2010

Infection Points

This spyware arrives as a file downloaded from the following URLs:

  • http://{BLOCKED}m.com/uploads/z2.exe

Installation

This spyware drops the following files:

  • %Application Data%\{random1}\{random}.exe
  • %Application Data%\{random2}\{random}.{random}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It creates the following folders:

  • %Application Data%\{random1}
  • %Application Data%\{random2}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

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
{8ED4D023-9920-9DEC-4CE7-1836FC1DE473} = %Application Data%\{random1}\{random}.exe

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random}
@ =  

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:

  • */surf.*
  • *193.104.12.127*
  • *blinkx.com*
  • *clients.google.com*
  • *eset.com*
  • *facebook.com*
  • *get_flash_info*
  • *hottraffic*
  • *jump2*
  • *mcafee.com*
  • *messagebroker*
  • *mochibot.com*
  • *myspace.com*
  • *myspacecdn.com*
  • *processplace.com*
  • *scanscout.com*
  • *slashkey.com*
  • *tube.com*
  • *wfrtube.net*
  • *zango.com*
  • http*activa24.ccm.es/BEWeb/2105/6105/inicio_identificacion.action*
  • http*bancoherrero.com/*
  • http*barclays.es/*
  • http*bbvanetoffice.com/*
  • http*caixacatalunya.com/*
  • http*caixapenedes.com/*
  • http*cajacanarias.es/*
  • http*cajaduero.es/*
  • http*deutsche-bank.es/*
  • http*ruralvia.com/isum/Main?ISUM_SCR=login&loginType=accesoSeguro&ISUM_Portal=*&acceso_idioma=es_ES*
  • http*sabadellatlantico.com/cs/Satellite/SabAtl/*
  • http://4.bp.blogspot.com/_YWqmXigxG9o/Rvtor063NBI/AAAAAAAAAjc/Y7zzEu8qTEk/s320/ruralvia.gif
  • http://cajacanarias.es/img/logo/logo-caja.gif
  • http://dflam.com/az_adm/inj_gate.php
  • http://www.caixacatalunya.com/caixacat/es/ccpublic/img_comun/redlogo_small.gif
  • http://www.lico.es/img/logos/logo2105.gif
  • https://*.cai.es*
  • https://*.caja-granada.es*
  • https://*activa24.ccm.es*
  • https://*caixatarragona.es*
  • https://*caja-ingenieros.es*
  • https://*cajaelectronica.cajadeavila.es*
  • https://*cajaextremadura.es*
  • https://*lacajadecanarias.es*
  • https://*lineacb.cajabadajoz.es*
  • https://*mediolanum.es*
  • https://*oficina24hores.caixagirona.es*
  • https://*oie.cajamadridempresas.es*
  • https://*sanostra.es*
  • https://*vitalnet.cajavital.es*
  • https://www.bancoherrero.com/cs/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1191489399917&ssbinary=true
  • https://www.barclays.es/publico/images/logo.png
  • https://www.bbvanetoffice.com/mult/logo_nuevo.gif
  • https://www.caixapenedes.com/imatges/logo_lema_cat.gif
  • https://www.cajaduero.es/particulares/img/logocajaduero.gif
  • https://www.deutsche-bank.es/pbc/img/logo_promo.gif
  • https://www.google.com/accounts/ig.gif
  • https://www.sabadellatlantico.com/cs/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1191517669265&ssbinary=true
  • https://www.verisign.es/hp07/i/vlogo.gif

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 accesses the following site to download its configuration file:

  • http://{BLOCKED}m.com/z2.nrg
  • http://{BLOCKED}lta.biz/z2.nrg
  • http://{BLOCKED}m.com/uploads/z2.nrg

Once users access any of the monitored sites, it starts logging keystrokes.

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:

  • BBVA
  • Banco Herrero
  • Barclays
  • CCM
  • Caixa Catalunya
  • Caixa Girona
  • Caixa Tarragona
  • Caixa de Balears
  • Caja Badajoz
  • Caja Canarias
  • Caja Duero
  • Caja Granada
  • Caja Madrid
  • Caja Rural
  • Caja Vital
  • Caja de Avila
  • Caja de Extremadura
  • Deutsche Bank
  • Facebook
  • La Caja de Canarias
  • McAfee
  • Myspace
  • Sabadell Atlantico

Stolen Information

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

  • http://{BLOCKED}m.com/up.php

Other Details

This spyware did not exhibit backdoor routines during testing.

Variant Information

This spyware has the following MD5 hashes:

  • 37c996c3fa5a8c8acc03908d0180c921

It has the following SHA1 hashes:

  • 914ee83d126a4094941055a03dc3fd593ed98b57

  SOLUTION

Minimum Scan Engine: 8.900

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

Identify and delete files detected as TSPY_ZBOT.SMJT using either the Startup Disk or Recovery Console

[ 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\
    • {random}
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • {8ED4D023-9920-9DEC-4CE7-1836FC1DE473} = %Application Data%\{random1}\{random}.exe

Step 4

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\{random1}
  • %Application Data%\{random2} 
  • Step 5

    Scan your computer with your Trend Micro product to delete files detected as TSPY_ZBOT.SMJT. 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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