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TROJ_ZBOT.CDW

October 08, 2012
 Analysis by: Marfel Tiamzon
 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

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.

It attempts to get information from a list of banks or financial institutions.

  TECHNICAL DETAILS

File Size:

174,676 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

07 Aug 2010

Installation

This Trojan 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:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

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
{AC9FB53B-A1E9-E200-0868-85391C9DA5DA} = %Application Data%\{random1}\{random}.exe

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random}
{default} =  

Dropping Routine

This Trojan drops the following files:

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

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}1.ru/bin/outhohye.bin
  • http://{BLOCKED}ory2.ru/bin/outhohye.bin
  • http://{BLOCKED}ory3.ru/bin/outhohye.bin
  • http://{BLOCKED}ory4.ru/bin/outhohye.bin
  • http://{BLOCKED}yeidod.ru/bin/outhohye.bin
  • http://{BLOCKED}ohroba.ru/bin/outhohye.bin
  • http://{BLOCKED}wiezei.ru/bin/outhohye.bin

Information Theft

This Trojan accesses the following site to download its configuration file:

  • http://esvr1.ru/bin/outhohye.bin
  • http://esvictory2.ru/bin/outhohye.bin
  • http://esvictory3.ru/bin/outhohye.bin
  • http://esvictory4.ru/bin/outhohye.bin
  • http://aixiguyeidod.ru/bin/outhohye.bin
  • http://iphahgohroba.ru/bin/outhohye.bin
  • http://lohxaewiezei.ru/bin/outhohye.bin

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

It 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:

  • *.de/portal/portal/*
  • *.microsoft.com/*
  • */atl.osmp.ru/*
  • */login.osmp.ru/*
  • *amazon.com*
  • *bankinter.com*gzinflate.js.php*
  • *bankinter.com*utils.js*
  • *bankinter.com/www/es-es/cgi/*+home
  • *blogger.com*
  • *cajaespana.net*
  • *flickr.com*
  • *iurisbank.com/isum/*login*
  • *livejournal.com*
  • *myspace.com*
  • *ruralvia.com/isum/*login*
  • *youtube.com*
  • http*scripts/injScp.js*
  • http://*
  • http://*/s/
  • http://*/u/
  • http://*odnoklassniki.ru/*
  • http://chaodo.ru/script.js
  • http://vkontakte.ru/*
  • https://activa24.ccm.es/6105/js/comunBEWEB.js*
  • https://activa24.ccm.es/BEWeb/2105/6105/inicio_identificacion.action*
  • https://banking.postbank.de/app/login.do*
  • https://banking.postbank.de/app/static/images/pblogo2.gif
  • https://banking.postbank.de/app/static/js/script.js*
  • https://banking.postbank.de/app/welcome.do*
  • https://be.cajamurcia.es/6043/entrada/accesomasinf.htm?injectreceiver
  • https://be.cajamurcia.es/6043/js/LOGIN2_PORTAL.js
  • https://be.cajamurcia.es/6043/js/MOD3.js
  • https://be.cajamurcia.es/BEWeb/2043/6043/inicio_identificacion.action
  • https://be.homecem.com/2041/img/02logo.gif
  • https://be.homecem.com/2041/js/comunBEWEB.js*
  • https://be.homecem.com/BEWeb/*/login_identificacion*
  • https://caja.caja-granada.es/apli/newsletter/newsletter_agosto_09.html?injectreceiver
  • https://cajaelectronica.caja-granada.es/2031/images/logo.png
  • https://cajaelectronica.caja-granada.es/2031/js/MOD3.js*
  • https://cajaelectronica.caja-granada.es/BEWeb/2031/2031/inicio_identificacion.action*
  • https://cajaelectronica.caja-granada.es/BEWeb/2031/2031/not5801_d_COMUN.action?OPERACION=*
  • https://cajasturdirecto.cajastur.es/*/js/MOD3.js*
  • https://cajasturdirecto.cajastur.es/4048/images/t_logo.gif
  • https://cajasturdirecto.cajastur.es/BEWeb/2048/*/inicio_identificacion.action*
  • https://cajasturdirecto.cajastur.es/BEWeb/2048/*/portal_inicio_identificacion.action*
  • https://empresas.gruposantander.es/WebEmpresas/*
  • https://enlaza.cajadeburgos.es/BELLogin.jsp*
  • https://enlinea.cajasur.es/4024/img/logo.jpg
  • https://enlinea.cajasur.es/4024/js/loginPin.js*
  • https://enlinea.cajasur.es/BEWeb/2024/4024/faq.action?injectreceiver
  • https://enlinea.cajasur.es/BEWeb/2024/4024/inicio_identificacion.action
  • https://enlinea.cajasur.es/BEWeb/2024/4024/inicio_identificacion.action*
  • https://finanzportal.fiducia.de/*/entry*
  • https://finanzportal.fiducia.de/*/portal*
  • https://ing.ingdirect.es/Transactional/html/productos/planes/Comun/ies_PD2040.html?injectreceiver
  • https://ing.ingdirect.es/W/Transactional/adf/js/jquery-latest.js*
  • https://ing.ingdirect.es/W/Transactional/faces/selectOption
  • https://ing.ingdirect.es/W/Transactional/faces/selectOption?select_op=initLogin*
  • https://intelvia.cajamurcia.es/6043/01/images/logointel.gif
  • https://internetbanking.gad.de/images/Ib.js*
  • https://internetbanking.gad.de/ptlweb/WebPortal*
  • https://meine.deutsche-bank.de/*
  • https://meine.deutsche-bank.de/*/javascript/global.js*
  • https://meine.deutsche-bank.de/trxmcontent/10.1.11.0/global/default/images/logo_db.gif
  • https://my.hypovereinsbank.de/img/ico/logo.gif
  • https://my.hypovereinsbank.de/js/portal.js*
  • https://my.hypovereinsbank.de/login*
  • https://oficina24hores.caixagirona.es/*/Js/MOD3.js*
  • https://oficina24hores.caixagirona.es/1030/Imatges/logo_caixa_nou.gif
  • https://oficina24hores.caixagirona.es/BEWeb/2030/1030/inicio_identificacion.action*
  • https://pastornet*.bancopastor.es/SrPd*
  • https://soldirecto.cajasoldirecto.es/2106/01menuindex.html?injectreceiver
  • https://soldirecto.cajasoldirecto.es/2106/js/incluyeDomain.js*
  • https://soldirecto.cajasoldirecto.es/BEWeb/2106/2106/inicio_identificacion.action*
  • https://soldirecto.cajasoldirecto.es/BEWeb/2106/2106/psINICm_0.action*
  • https://telematic.caixamanlleu.es/ISMC/*/acceso.jsp*
  • https://telematic.caixamanlleu.es/ISMC/*/js/teclat.js*
  • https://ww3.deutsche-bank.es/db24online/js/login/eStara.js
  • https://ww3.deutsche-bank.es/pbct/NetiServlet?neti_id=navigation.bottom*
  • https://ww3.deutsche-bank.es/pbct/login*
  • https://ww3.deutsche-bank.es/pbct/login.*
  • https://www.barclays.es/publico/contents/*jsp*
  • https://www.barclays.es/publico/js/TextEngine.js
  • https://www.bbvanetoffice.com/BBVANETOFFICE/bbvanetoffice/bienvenida*
  • https://www.bbvanetoffice.com/BBVANETOFFICE/promocion*
  • https://www.bbvanetoffice.com/local_bdno/aviso.html?injectreceiver
  • https://www.bbvanetoffice.com/mult/logo_nuevo.gif
  • https://www.bbvanetoffice.com/promocion*
  • https://www.caixacatalunya.com/CDA/caixacat/es/ccpublic/particulars/Home/OthHomePageCas/0,1217,,00.html
  • https://www.caixacatalunya.com/NASApp/ceconline/index.jsp
  • https://www.caixacatalunya.com/NASApp/ceconline/index.jsp*
  • https://www.caixapenedes.com*
  • https://www.caixapenedes.com/home.asp?injectreceiver
  • https://www.caixapenedes.com/imatges/logo_lema_cat.gif
  • https://www.caixapenedes.com/js/niftycube.js
  • https://www.caixaterrassa.es/SESSIONS/SFObe*
  • https://www.caixaterrassa.es/imatges/logo.jpg
  • https://www.cajaespana.net/convivencia/siglo21/estandar/recursos/imag_menus/toro_caja.gif
  • https://www.cajaespana.net/convivencia/siglo21/estandar/recursos/tecladovirtual.js
  • https://www.cajaespana.net/movil.html?injectreceiver
  • https://www.cajalaboral.*/home/acceso.asp
  • https://www.cajalaboral.com/demo/index.html
  • https://www.cajamar.es*
  • https://www.cajamar.es/img/logo.gif
  • https://www.cajasoldirecto.es/
  • https://www.ccm.es/6105/seguridad/inicio.html?injectreceiver
  • https://www.commerzbanking.de/*/cowis.js*
  • https://www.commerzbanking.de/*/pgf.html*
  • https://www.deutsche-bank.es/pbc/data/es/navegador_rapido.html?injectreceiver
  • https://www.dresdner-privat.de/SSA_MLS_JAVASCRIPT/mlsgeneral.js*
  • https://www.dresdner-privat.de/images/DresdnerBank.gif
  • https://www.dresdner-privat.de/servlet/P/SSA*do*
  • https://www.google.com/accounts/ig.gif
  • https://www.gruposantander.es/*
  • https://www.iurisbank.com/es_ES/img/logo_acceso_3171.gif
  • https://www.ruralvia.com/img/logorvia05.gif
  • https://www.ruralvia.com/img/logorvia05.gif?injectreceiver
  • https://www.sabadellatlantico.com*
  • https://www.solbank.com*
  • https://www.sparkasse.de/_image_gallery/logo.gif
  • https://www.targobank.de/de/*cgi*
  • https://www.targobank.de/de/images/css/env/logo.gif
  • https://www.targobank.de/de/javascript/funcs_global.js*
  • https://www.unicaja.es/*
  • https://www.uno-e.com/local_bdnt_unoe/Login_unoe2.html*
  • https://www.verisign.es/hp07/i/vlogo.gif
  • https://www.verisign.es/hp07/i/vlogo.gif
  • https://www.verisign.es/hp07/i/vlogo.gif\
  • https://www3.altamiraonline.com/AltamiraOnLineWeb/Sesion*
  • https://www3.altamiraonline.com/AltamiraOnLineWeb/src/canalInet/md5.js*

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:

  • Amazon
  • BBVA
  • Banco Pastor
  • Banco de Sadabell
  • Bankinter
  • Barclays
  • Blogger
  • CCM
  • Caixa Catalunya
  • Caixa Girona
  • Caixa Manlleu
  • Caja Espana
  • Caja Granada
  • Caja Laboral
  • Caja Mar
  • Caja Murcia
  • Caja Rural
  • Caja Stur
  • Caja Sur
  • Caja de Burgos
  • Cajasol
  • Commerzbank
  • Deutsche Bank
  • Dresdner
  • Fiducia
  • Flickr
  • GAD
  • ING Direct
  • IS Bank
  • Live Journal
  • Microsoft
  • Myspace
  • OSPM
  • Odnoklassniki
  • Sabadell Atlantico
  • Santander
  • Unicaja
  • Uno-E
  • Vkontakte
  • YouTube

Attacked Entities

This Trojan attempts to get information from a list of banks or financial institutions.

Stolen Information

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

  • http://{BLOCKED}ory1.ru/ku1/_gate.php

Other Details

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

  • It arrives as a file downloaded from the following URL: http://{BLOCKED}ory5.ru/bin/outhohye.exe

It did not exhibit backdoor routines during testing.

Variant Information

This Trojan has the following MD5 hashes:

  • 7b147bdd71704ac6bbad020f98d6532b

It has the following SHA1 hashes:

  • f7d1a2b91b6fd81739d13b02f10952877fc25d70

  SOLUTION

Minimum Scan Engine:

8.900

Step 1

Scan your computer with your Trend Micro product and note files detected as TROJ_ZBOT.CDW

Step 2

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 3

Identify and delete files detected as TROJ_ZBOT.CDW using the Recovery Console

[ Learn More ]

Step 4

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
    • {AC9FB53B-A1E9-E200-0868-85391C9DA5DA}=%Application Data%\{random1}\{random}.exe

Step 5

Delete this registry key

[ 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}
    • {default}

Step 6

Search and delete these files

[ 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. DATA_GENERIC
Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
  • Once located, select the file then press SHIFT+DELETE to permanently delete the file.
  • Repeat the said steps for all files listed.

    • Step 7

    Scan your computer with your Trend Micro product to delete files detected as TROJ_ZBOT.CDW. 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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