Analysis by: Marfel Tiamzon

 PLATFORM:

Windows 98, ME, NT, 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: 129,536 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 02 Aug 2010
Payload: Steals information

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
{7956D4B0-70F3-35A7-569D-1A702FC4160A} = %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}.hub

(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.)

Information Theft

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

  • http://update-java3.com/src/update2.set
  • http://update-java3.com/src/ie82.chm
  • http://update-java4.com/src/ie82.chm

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:

  • *.anz.com*
  • *.anz.com*login.asp
  • *.halifax-online.co.uk*
  • *.microsoft.com/*
  • *.nwolb.com*
  • *.nwolb.com*AccountSummary.aspx*
  • *.nwolb.com*OneOffPaymentsCreateBillPayee.aspx*
  • *.nwolb.com*OneOffPaymentsPayeeList.aspx*
  • *.nwolb.com*PaymentsLandingPage.aspx*
  • *.nwolb.com*StatementsLandingPage.aspx*
  • */atl.osmp.ru/*
  • */login.osmp.ru/*
  • *anz.com*Action.ANZRetUser.External.SignOn*
  • *firstdirect.com*
  • *online.westpac.com.au*SrvPage*
  • *online.westpac.com.au*_*.asp*
  • *online.westpac.com.au*appchanger*
  • *online.westpac.com.au*bpd_pygetdetails.asp*
  • *online.westpac.com.au*bsd_aitranslist.asp*
  • *online.westpac.com.au*bsd_pyfullpayeelist.asp*
  • *online.westpac.com.au*dashboard*
  • *online.westpac.com.au*startpage*
  • http*alliance-leicester.co.uk*TGZ2.asp*
  • http*anz.com*BROKOLLYAWAY*
  • http*bankofscotlandhalifax-online.co.uk*
  • http*firstdirect.com*gate.php*
  • http*firstdirect.com*idvs.newa*
  • http*halifax.co.uk*
  • http*nwolb.com*WebResosrce.axd*
  • http*online.westpac.com.au*pageloadsa*
  • http://*myspace.com*
  • http://*odnoklassniki.ru/*
  • http://java-updates.com/?d=
  • http://java-updates.com/?rep=money sent:
  • http://java-updates.com/?rep=wait sms otp&d=
  • http://java-updates.com/?ver=10&bid=1&id=
  • http://java-updates.com/?ver=10&bid=3&id=
  • http://java-updates.com/minotavrgetnowspe.php
  • http://java-updates.com/minotavrtnowspe.php
  • http://vkontakte.ru/*
  • http://www.hsbc.co.uk/1/PA_1_1_S5/content/uk/pdfs/en/hsbc_green_tcs.pdf
  • http://www.hsbc.co.uk/1/PA_1_1_S5/content/uk/pdfs/en/personalbankingterms_conditions.pdf
  • http://www.hsbc.co.uk/1/PA_1_1_S5/content/uk/pdfs/en/student_and_graduate.pdf
  • http://www.hsbc.co.uk/1/PA_1_1_S5/content/uk/pdfs/en/student_cred_card_tc.pdf
  • https://(.+).anz.com
  • https://*
  • https://*.abbeynational.co.uk*
  • https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js
  • https://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js
  • https://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/start/ui.all.css
  • https://getinvolved-donate.fao.org/pub_libs21/system/auth/loadingAnimation.gif
  • https://myonlineaccounts2.abbeynational.co.uk/CentralLogonWeb/Logon*
  • https://myonlineaccounts2.abbeynational.co.uk/ffStatic/js/global.js
  • https://retail.abbeynational.co.uk*internetSantander.js*
  • https://retail.abbeynational.co.uk/EBAN_ENS/BtoChannelDriver.ssobto*
  • https://retail.abbeynational.co.uk/EBAN_ENS/BtoChannelDriver.ssobto?dse_operationName=MyPersonalHomepage&canal=INT
  • https://u4web.com/www5/log.php
  • https://u4web.com/www5/stats.php
  • https://u4web.com/www5/tmp/jquery-ui.min.js
  • https://u4web.com/www5/tmp/jquery.css
  • https://u4web.com/www5/whiteip.php
  • https://www.gruposantander.es/*
  • https://www.hsbc.co.uk/1/2/*
  • https://www.hsbc.co.uk/1/2/personal/internet-banking/personal-details;jsessionid=
  • https://www.hsbc.co.uk/1/2/personal/internet-banking;*
  • https://www.mybank.alliance-leicester.co.uk/index.asp*
  • https://www.mybank.alliance-leicester.co.uk/login/PM4point1.asp*
  • https://www.mybank.alliance-leicester.co.uk/login/PM5.asp*
  • https://www.mybank.alliance-leicester.co.uk/view_accounts/VA1.asp*
  • https://www.nwolb.com*login.aspx*
  • https://www1.firstdirect.com/1/themes/html/firstdirectPWSa/images/fdlogo_home.gif

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
  • Abbey National
  • Alliance & Leicester
  • HSBC
  • Halifax
  • Microsoft
  • Myspace
  • Natwest
  • OSPM
  • Odnoklassniki
  • Santander
  • Vkontakte
  • Westpac Banking Corporation

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}-java3.com/aaaa/11g.php

Other Details

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

  • It arrives as a file downloaded from the following URLs: http://{BLOCKED}-java3.com/src/update1.exe

Variant Information

This Trojan has the following MD5 hashes:

  • c917e51baf6223b7a356580d77d65461

It has the following SHA1 hashes:

  • 59ef8009bba82a5ed544a1009b74eab0c0614fc4

  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

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
    • {7956D4B0-70F3-35A7-569D-1A702FC4160A} = %Application Data%\{random1}\{random}.exe

Step 3

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}

Step 4

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