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

  TECHNICAL DETAILS

File Size: 158,720 bytes
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 15 Oct 2010

Arrival Details

This spyware may be unknowingly downloaded by a user while visiting the following malicious websites:

  • http://{BLOCKED}gstart.ru/upload/update.exe

Installation

This spyware adds 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.)

It injects itself into the following processes as part of its memory residency routine:

  • dwm.exe
  • rdpclip.exe
  • ctfmon.exe
  • wscntfy.exe
  • taskeng.exe
  • taskhost.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
{random CLSID} = %Application Data%\{random1}\{random}.exe

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random}

Dropping Routine

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.)

Download Routine

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

  • http://{BLOCKED}gstart.ru/cfg/23ddssamsungstart.jpg

Information Theft

This spyware attempts to access a website to download a file which contains information where the Trojan can download an updated copy of itself, and where to send its stolen data. This configuration file also contains the following list of targeted bank-related websites from which it steals information:

  • *bancomediolanum.es*
  • *bancomediolanum.es*2011*
  • *barclays*
  • *caixacatalunya.com*
  • *caixatarragona.es/*oficinacodigo.jsp*
  • *cajacanariasonline.cajacanarias.es*
  • *deutsche-bank.es/pbct/login.init.db*
  • *e-pueyo.com*centro*
  • *enviado*cookie*modoDemo*idioma=*
  • *https://lineacb.cajabadajoz.es/BEWeb/*/inicio_identificacion.action*
  • *inversis.com*
  • *online.halifax.es/main*
  • *ruralvia.com*
  • @https://*.caja-granada.es*
  • @https://*activa24.ccm.es*
  • @https://*caionline.cai.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://*sanostra.es*
  • @https://*vitalnet.cajavital.es*
  • http://bqmagazine.es/classes/org/flashsandy/display/image/bancocaixageral.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/bankpymenet.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/bbofc.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cai.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/caixalaietana.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/caixamanlleu.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cajacirculo.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cajaduero.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cajasegovia.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cam.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/ccm.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cjgranada.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/cxped.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/ing.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/ingeniero.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/iurisbank.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/lacan.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/rur.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/san.php
  • http://bqmagazine.es/classes/org/flashsandy/display/image/val.php
  • http://portal.cajabadajoz.es/imagenes/logo_caja_badajoz.jpg
  • http://www.caixacatalunya.com/caixacat/es/ccpublic/img_comun/redlogo_small.gif
  • http://www.photoshopatoms.com/tutorials/creating-an-ajax-style-loading-gif/images/img16.gif
  • https://*bancae.caixapenedes.com*
  • https://*bancocaixageral.es*
  • https://*bancodevalencia.es*
  • https://*bancopastor.es*
  • https://*bankpymenet.com*
  • https://*bbvanetoffice.com*
  • https://*cai.es*
  • https://*caixalaietana.es*
  • https://*caja-granada.es*
  • https://*caja-ingenieros.es*
  • https://*cajacirculo.es*
  • https://*cajaduero.es*
  • https://*cajamurcia.es*
  • https://*cajasegovia.es*
  • https://*cam.es*
  • https://*ccm.es*
  • https://*gruposantander.es/bog/sbi*
  • https://*ing.ingdirect.es*
  • https://*iurisbank.com*
  • https://*lacajadecanarias.es*
  • https://*ruralvia.com*
  • https://*ruralvia.com/isum/Main*
  • https://*sanostra.es*
  • https://*telematic.caixamanlleu.es*
  • https://banca.cajaguadalajara.biz/ISMC/Guadalajara/INclient.jsp*
  • https://be.bancogallego.es/img/logo_Gallego.gif
  • https://be.bancogallego.es/inithome*
  • https://cajacanariasonline.cajacanarias.es/3065/imgportada2/logo-cajaonline.acc.png
  • https://cajaelectronica.caja-granada.es*
  • https://net.kutxa.net/*/tmpl/es/loginkn*
  • https://net.kutxa.net//wkn_nuevo/wkn_opkn/imgs/cabecera/f_cab1.jpg); FLOAT: left; background-repeat: no-repeat;
  • https://net.kutxa.net/wkn_nuevo/wkn_opkn/imgs/es/01logo_kutxanet.gif
  • https://net.kutxa.net/wkn_nuevo/wkn_opkn/imgs/es/01logo_kutxanet.gif
  • https://online.halifax.es/main*
  • https://seguro.cam.es/camd/SvlLoginCAM*
  • https://vitalnet.cajavital.es/2097/images/tit_accesotradicional.gif
  • https://vitalnet.cajavital.es/BEWeb/*/inicio_identificacion.action*
  • https://www.bancomediolanum.es/images/bluebar/es-Es/BM_LogoFibanc.gif
  • https://www.barclays.es/publico/images/logo.png
  • https://www.bbvanetoffice.com/local_bdno/login_bbvanetoffice.html
  • https://www.cajabadajoz.es/6010/img/frame_superior_cb2.jpg
  • https://www.deutsche-bank.es/pbc/img/logo_promo.gif
  • https://www.e-pueyo.com/imagenes/e-pueyo2.jpg
  • https://www.google.com/accounts/ig.gif
  • https://www.iknet.iparkutxa.es/img/iknet_cas.gif
  • https://www.iknet.iparkutxa.es/intro*
  • https://www.inversis.com/images/inversiones/img/bg_content_4.jpg); width:200px;
  • https://www.inversis.com/images/inversiones/img/btn_dnie.gif
  • https://www.inversis.com/servlet/Satellite?blobcol=urlcontenido&blobheader=gif&blobkey=id&blobtable=ContenidoCobranding&blobwhere=1225374654482&ssbinary=true
  • https://www.ruralvia.com/es_ES/ayudas/aviso_corte_Albalat.htm
  • https://www.ruralvia.com/es_ES/ayudas/aviso_corte_CajaCampo.htm
  • https://www.ruralvia.com/es_ES/ayudas/aviso_corte_Casinos.htm

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

  • BBVA
  • Banco Caixa Geral
  • Banco Gallego
  • Banco Mediolanum
  • Banco Pastor
  • Banco de Valencia
  • Bankpyme Servidor de Banca Electronica
  • Barclays
  • CCM
  • Caixa Catalunya
  • Caixa Girona
  • Caixa Laietana
  • Caixa Manlleu
  • Caixa Tarragona
  • Caixapenedes
  • Caja Badajoz
  • Caja Canarias
  • Caja Circulo
  • Caja Duero
  • Caja Extremadura
  • Caja Granada
  • Caja Murcia
  • Caja Segovia
  • Caja Vital
  • Caja de Avila
  • Caja de Guadalajara
  • Caja de Ingenieros
  • Deutsche Bank
  • Fifth Third
  • Halifax
  • ING Direct
  • IS Bank
  • Inversis
  • Kutxanet
  • Ruralvia
  • Santander

Stolen Information

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

  • http://{BLOCKED}gstart.ru/more/contact.php

Variant Information

This spyware has the following MD5 hashes:

  • b2ac6a81b95ef12dcaf364d898d72b1c

It has the following SHA1 hashes:

  • be4621899eace85272df6975f738bb7390e96195

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.542.02
VSAPI PATTERN Date: 15 Oct 2010
VSAPI PATTERN Date: 10/15/2010 12:00:00 AM

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.GERT using the 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\Windows\CurrentVersion\Run
    • {random CLSID}=%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.GERT. 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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