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TROJ_FRAUD.AB

September 27, 2013
 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: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan 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.

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

  TECHNICAL DETAILS

File Size:

204,800 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

07 Nov 2010

Infection Points

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

  • http://{BLOCKED}reXQ4F4GG84aIiSomXt.net/panel3/ppnl3.exe

Installation

This Trojan drops the following files:

  • %User Profile%\Application Data\{random folder name 1}\{random file name 1}.exe
  • %User Profile%\Application Data\{random folder name 2}\{random file name 2}

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

It creates the following folders:

  • %User Profile%\Application Data\{random folder name 1}
  • %User Profile%\Application Data\{random folder name 2}

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

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

  • explorer.exe
  • rdpclip.exe
  • ctfmon.exe
  • wscntfy.exe
  • taskeng.exe
  • taskhost.exe
  • dwm.exe

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
{4855B9F2-61AD-DBB7-4A3A-7CC94971B58F} = %User Profile%\Application Data\{random folder name 1}\{random file name 1}.exe

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
{random key}

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:

  • *.bankinter.com/www/es-es/cgi/*home*
  • *.bankinter.com/www/es-es/cgi/*integral
  • *.bankinter.com/www/es-es/cgi/ebk+opr*
  • *.ccm.es*
  • *.ccm.es/*inicio_identificacionAAAA*
  • *.deutsche-bank.es*login*
  • *.ingdirect.es*Transactional/faces/views/getClientID*
  • *bancopastor.es/*SrPd*
  • *banesnet.banesto.es*cabeza_bk*
  • *banesnet.banesto.es*dse_nextEventName=start
  • *banesnet.banesto.es*s.bto
  • *banesnet.banesto.es/npage/loginEmpresas*
  • *caixacatalunya.com*/es/ccpublic/*
  • *caixadirecta.cgd.pt*
  • *caixadirecta.cgd.pt/CaixaDirecta/login*
  • *cajaduero.es*
  • *cajaduero.es*microsite*
  • *e-pueyo.com*centro*
  • *e-pueyo.com*opciones*
  • *empresas.santandertotta.pt/canalempresas/finance/login*
  • *empresas.santandertotta.pt/canalempresas/finance/login*
  • *grupobanif.pt/xsite_be/BE/home/Autenticacao*
  • *lacajaencasa.cajacanarias.es*identificacion*
  • *lloydstsb.es/VirtualBank/servlet/LoadMenuOperaciones*
  • *online.halifax.es/main*
  • *pastornetempresas.bancopastor.es/SrPd*
  • *priv.activobank7.pt/v10/PT/jsp/privado/loginHomePagePasso2.jsp*
  • *ps://pastornetparticulares.bancopastor.es/*SrPd*
  • *ruralvia.com/isum/Main?ISUM_ID=portlets_area*
  • *s://pastornetempresas.bancopastor.es/SrPd*
  • *soldirecto.cajasoldirecto.es/BEWeb/*
  • *ww3.deutsche-bank.es/*
  • *ww3.deutsche-bank.es/*
  • https://bancae.caixapenedes.com*
  • https://bancae.caixapenedes.com/mcpenedesnl/*
  • https://bancae.caixapenedes.com/mcpenedesnl/*
  • https://bancopostaimpresaonline.poste.it/bpiol/lastFortyMovementsBalance.do?method=loadLastFortyMovementList*
  • https://banesnet.banesto.es*sugerencias*
  • https://banesnet.banesto.es/*ChannelDriver*
  • https://banking.postbank.de/app/finanzstatus.init.do*
  • https://banking.postbank.de/app/tan.historie.input.do*viewmode=tan
  • https://barclaysnet.barclays.es/servlet/com.ibm.dse.cs.servlet*
  • https://be.bancogallego.es/inithome*
  • https://be.cajamurcia.es/BEWeb/*ps0002m004_0*
  • https://be.cajamurcia.es/BEWeb/*psINICm_0*
  • https://caixagestionempresas.caixagalicia.es/*/inicio_identificacion.action*
  • https://cajacanariasonline.cajacanarias.es/*/inicio_identificacion_portal*
  • https://cajaelectronica.caja-granada.es*inicio_identificacion*
  • https://cajaelectronica.caja-granada.es/BEWeb/*.action*
  • https://ce.caixalaietana.es/BEWeb/2042/2042*_m_COMUN*
  • https://interconnexio*.bibm.ad/GeneralServlet
  • https://interconnexio*.bibm.ad/GeneralServlet?pageOperation=INICIO_WELCOME*
  • https://linea.sanostra.es/*login_identificacion*
  • https://net.kutxa.net/*/tmpl/es/loginkn*
  • https://net24.montepio.pt/Net24-Web/func/login/*
  • https://oficina24hores.caixagirona.es/BEWeb/2030/1030/inicio_identificacion*
  • https://oie.cajamadridempresas.es/CajaMadrid/oie/pt_oie/Login/*
  • https://online.halifax.es/main*
  • https://online.halifax.es/main*
  • https://pastornetempresas.bancopastor.es/*SrPd*
  • https://pastornetempresas.bancopastor.es/EMPBEEMPA_F.jsp?*
  • https://pastornetempresas.bancopastor.es/titEMPBEEMPA*
  • https://pastornetparticulares.bancopastor.es/*SrPd*
  • https://pastornetparticulares.bancopastor.es/BEPBEBEPA_F.jsp
  • https://pastornetparticulares.bancopastor.es/SrPd;jsessionid=*
  • https://pastornetparticulares.bancopastor.es/titBEPBEBEPA*
  • https://seguro.cam.es*SvlHistoricoMovimientosCAM*
  • https://seguro.cam.es*SvlSaldoCAM*
  • https://soldirecto.cajasoldirecto.es/BEWeb/*
  • https://telematic.caixamanlleu.es/ISMC/Manlleu_cat/acceso*
  • https://vitalnet.cajavital.es/BEWeb/*/inicio_identificacion*
  • https://ww3.deutsche-bank.es*NetiServlet*
  • https://www.bancomediolanum.es/*
  • https://www.banesto.es/cs/Satellite*HomeEmpresas*
  • https://www.bankinter.com*
  • https://www.bvi.bancodevalencia.es/inithome*
  • https://www.caixatarragona.es/*/oficinacodigo*
  • https://www.cajaduero.es/CajaElectronica/boxer/*
  • https://www.cajaespana.net/convivencia/servlet/ServletCTRL
  • https://www.empresas.santandertotta.pt/canalempresas/finance/*
  • https://www.empresas.santandertotta.pt/canalempresas/finance/*
  • https://www.empresas.santandertotta.pt/canalempresas/finance/patrimonio/*
  • https://www.finibanco.pt/*/BemVindo.jsp*
  • https://www.gruposantander.es/*
  • https://www.iknet.iparkutxa.es/intro*
  • https://www.lloydstsb.es/VirtualBank/*
  • https://www.lloydstsb.es/VirtualBank/servlet/LoadMenuOperaciones*
  • https://www.ruralvia.com/isum/Main*

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}reXQ4F4GG84aIiSomXt.net/panel3/ppnl3.bin
  • http://{BLOCKED}7iYI1KWgOevNWVJCn85.net/panel3/ppnl3.bin
  • http://{BLOCKED}rUOffQzcjQUzB6LDu92.net/panel3/ppnl3.bin
  • http://{BLOCKED}ncMEhQbLCCyfLrM9NKR.net/panel3/ppnl3.bin
  • http://{BLOCKED}zIa6qodOo7tWHVc0pmy.net/panel3/ppnl3.bin
  • http://{BLOCKED}L24AWBlp8PImtA1YuUl.net/panel3/ppnl3.bin
  • http://{BLOCKED}knhafOKYsl4yLtPKutM.net/panel3/ppnl3.bin
  • http://{BLOCKED}DQTGSMru8lUlZUzwwAx.net/panel3/ppnl3.bin
  • http://{BLOCKED}rhRBIeb30LbflcMj7Ru.net/panel3/ppnl3.bin
  • http://{BLOCKED}U1p8IbutczX1uLvsJ5L.net/panel3/ppnl3.bin
  • http://{BLOCKED}marivanna.info/ppnl3.bin

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

The downloaded file contains information where the malware can download an updated copy of itself, and where to send its stolen data.

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:

  • ANZ
  • Banco Pastor
  • Banesto
  • Banif
  • Barclays
  • CCM
  • Caixa Geral de Depósitos
  • Caixa Girona
  • Caixa Laietana
  • Caixa Manlleu
  • Caixa Tarragona
  • Caixadirecta
  • Caja Canarias
  • Caja España
  • Caja Granada
  • Caja Madrid
  • Caja Murcia
  • Caja Vital
  • Cajasol
  • Deutsche Bank
  • Finibanco
  • ING Direct
  • Iside
  • Kutxanet
  • Lloyds
  • Montepio
  • Postbank
  • PosteItaliane
  • Santander
  • Santander Totta

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}reXQ4F4GG84aIiSomXt.net/panel3/gotobank.php

Other Details

This Trojan did not exhibit backdoor routines during testing.

Variant Information

This Trojan has the following MD5 hashes:

  • 50a57c592735f67952b5126f776e3300

It has the following SHA1 hashes:

  • 29ac7890e514623df1eabdd4b08def95a62dd6e7

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.600.08

VSAPI PATTERN Date:

07 Nov 2010

VSAPI PATTERN Date:

11/7/2010 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 TROJ_FRAUD.AB 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\Windows\CurrentVersion\Run
    • {4855B9F2-61AD-DBB7-4A3A-7CC94971B58F}=%User Profile%\Application Data\{random folder name 1}\{random file name 1}.exe

Step 4

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 key}

Step 5

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.
  • %User Profile%\Application Data\{random folder name 1}
  • %User Profile%\Application Data\{random folder name 2}

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_FRAUD.AB. 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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