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TSPY_ZBOT.BYM

October 08, 2012
 Modified 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: No

  • 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:

139,264 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

03 Sep 2010

Payload:

Downloads files

Infection Points

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

  • http://caramelloinze.net/chan/aol.exe

Installation

This spyware drops the following files:

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

(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.)

It creates the following folders:

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

(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 spyware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{8430DABA-2BA3-F7EA-7025-A1D62FE04E36} = %Application Data%\{random folder name 1}\{random file name}.exe

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:

  • *.53.com/servlet/efsonline/index.html*
  • *.bankofamerica.com/*
  • *.bbvanetoffice.com/*/login_bbvanetoffice.html
  • *.citizensbankonline.com/*/index-wait.jsp
  • *.microsoft.com/*
  • *.nationet.com/MyAccounts/*
  • *.navyfcu.org/*AccountSummary*
  • *.usbank.com/internetBanking/RequestRouter*
  • *.wachovia.com/myAccounts*
  • */atl.osmp.ru/*
  • */banking*.anz.com/*
  • */easyweb*.tdcanadatrust.com/*FinancialSummaryServlet*
  • */inet-banking.arvest.com/*
  • */login.osmp.ru/*
  • */olb2.nationet.com/signon/signon*
  • */online.wamu.com/*Page=AccountSummary
  • */onlinebanking.nationalcity.com/*/AccountList*
  • */resources.chase.com/MyAccounts.aspx
  • */www.e-gold.com/acct/li.asp
  • */www.netteller*WCI=balances*
  • */www.nwolb.com/Login.asp*
  • *alertpay.com/AccountOverview*
  • *alertpay.com/Login*
  • *bankofamerica.com/cgi-bin*
  • *bbvanetcash.com*
  • *bwin.com*Default.asp*
  • *c-gold.com/account/login.php*
  • *citibank.com*
  • *e-gold.com/acct/balance.asp*
  • *fcu.org/*
  • *isbank.com.tr/Internet/ControlLoader.aspx*
  • *netteller.com*Login.aspx
  • *online.citibank.com/US/JPS/portal/Index.do
  • *online.citibank.com/US/JSO/signon/*
  • *online.citibank.com/signin/UnameSignonCookie.do
  • *paypal.com/*/webscr?cmd=_account
  • *paypal.com/*/webscr?cmd=_login-done*
  • *rbsdigital.com/Login.asp*
  • *skype.com*
  • *suntrust.com/portal/server.pt*parentname=Login*
  • *us.hsbc.com/*
  • *wellsfargo.com/*
  • http://*google.*/search?hl=*
  • http://*myspace.com*
  • http://*odnoklassniki.ru/*
  • http://lakewoodtrade.com/?partner=glinka
  • http://vkontakte.ru/*
  • https://*.alaskausa.org/*
  • https://*.scottrade.com/*
  • https://*chase.com/MyAccounts.aspx
  • https://*dcu.com*
  • https://*sanpaoloimi.com/*
  • https://*usbank.com/internetBanking/LoginRouter
  • 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/south-street/ui.all.css
  • https://allied.direct.abl.com.pk/*
  • https://banking.chevychasebank.com/cgi-bin/Banking/*/signin/*ogin*
  • https://cardsonline-consumer.com/RBSG_Consumer/VerifyLogin.do
  • https://chaseonline.chase.com/*ogon.aspx*
  • https://chaseonline.chase.com/images/logon.gif
  • https://chaseonline.chase.com/images/spacer.gif
  • https://fbmedirect.com/FLEXCUBEAT/LiveConnect.dll
  • https://netteller*.pncs.com.au/806015V451/ntv45.asp?*=entry
  • https://online.wamu.com/Servicing/Servicing.aspx?targetPage=AccountSummary
  • https://online.wellsfargo.com/das/cgi-bin/session.cgi*
  • https://onlinebanking#.wachovia.com/myAccounts.aspx?referrer=authService
  • https://onlinebanking.huntington.com/*
  • https://onlinebanking.huntington.com/index.aspx
  • https://p6.secure.hostingprod.com/@www.39davidworld.com/ssl/bott.jpg
  • https://p6.secure.hostingprod.com/@www.39davidworld.com/ssl/head.jpg
  • https://wachovia.com/
  • https://www*.banking.first-direct.com/1/2/*
  • https://www.bankofamerica.com/www/global/mvc_objects/images/mhd_reg_logo.gif
  • https://www.chase.com/cpp
  • https://www.google.com/accounts/ig.gif
  • https://www.gruposantander.es/*
  • https://www.huntington.com/*
  • https://www.moneybookers.com/app/my_account.pl
  • https://www.nwolb.com/Login.aspx*
  • https://www.paypal.com/*/webscr?cmd=_account
  • https://www.paypal.com/*/webscr?cmd=_login-done*
  • https://www3.netbank.commbank.com.au/netbank/bankmain*

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://plecerfluent.net/cfg1.bin
  • http://permintacher.net/cfg1.bin
  • http://caprichobell.net/cfg1.bin
  • http://caramelloinze.net/chan/cfg.bin

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:

  • ANZ
  • Alertpay
  • BBVA
  • Banco Bilbao Vizcaya Argentaria
  • Bank of America
  • Chase
  • Citibank
  • Citizens
  • E-Gold
  • Fifth Third
  • First Direct
  • HSBC
  • IS Bank
  • Microsoft
  • Moneybookers
  • Myspace
  • National City
  • Nationwide
  • Natwest
  • Navy Federal Credit Union
  • OSPM
  • Odnoklassniki
  • PNC
  • PayPal
  • RBS
  • SEB
  • Santander
  • Suntrust
  • TD Canada Trust
  • US Bank
  • Vkontakte
  • Wachovia
  • Washington Mutual
  • Wells Fargo

Stolen Information

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

  • http://caramelloinze.net/chan/bril/server.php

Other Details

This spyware did not exhibit backdoor routines during testing.

Variant Information

This spyware has the following MD5 hashes:

  • 74081511814ba97c7868fadc0a3f77e8
  • 9bd60663a3607eaae8e8c34b6a6ca458
  • d6cf44c7c5761daa68ca2d556e61789a

It has the following SHA1 hashes:

  • 6b2013d23e830d9d3f4fea8bbd8e3a3d1b8fcc19
  • d05379507210559c9fc1a6184c13b65fee88b626
  • a067a438c05355b1f144d07bca2df48bc4ffcdb2

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

7.435.00

VSAPI OPR PATTERN Date:

03 Sep 2010

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

Identify and delete files detected as TSPY_ZBOT.BYM 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
    • {8430DABA-2BA3-F7EA-7025-A1D62FE04E36}=%Application Data%\{random folder name 1}\{random file name}.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.
  • %Application Data%\{random folder name 1}
  • %Application Data%\{random folder name 2}

Step 6

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