TROJ_ZBOT.BYU
Trojan.Zbot!gen14 (Symantec); PWS:Win32/Zbot (Microsoft); Trojan-Spy.Win32.Zbot.avia (Kaspersky)
Windows 2000, XP, Server 2003
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
125,440 bytes
PE
Yes
06 Dec 2010
Downloads files, Drops files
Arrival Details
This spyware may be unknowingly downloaded by a user while visiting the following malicious websites:
- http://{BLOCKED}ead.co.cc/setupold/09/setup.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:\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 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:\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 spyware connects to the following URL(s) to download its configuration file:
- http://{BLOCKED}ead.co.cc/setupold/09/data.bin
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:
- *.ebay.*/*eBayISAPI.dll?*
- *.hsbc.co.uk/1/2/HSBCINTEGRATION/*
- *.partnerandaffinitycards.co.uk/servicing/Logon.aspx?*
- */CapitalOne_Consumer/*
- */atl.osmp.ru/*
- */login.osmp.ru/*
- */my.ebay.*/*
- */my.ebay.*/*CurrentPage=MyeBayPersonalInfo*
- *alliance-leicester.co.uk*
- *banking.bankofscotland.co.uk*
- *banking.co.at*
- *barclaycard.co.uk*initialLogon*
- *business.co-operativebank.co.uk*
- *business.hsbc.co.uk*
- *commerzbank-privat.de*
- *commissioncontrol.net*
- *coventrybuildingsociety.co.uk*
- *ebanking.bawag.com*
- *fdonline.co-operativebank.co.uk*
- *fiducia.de*
- *home.cbonline.co.uk/ralu*
- *home.ybonline.co.uk/ralu*
- *iblogin.com/hobsinternet*
- *ksk-*.de*
- *kskgrossgerau.de*
- *ksklb.de*
- *kskms.de*
- *kskrhein-hunsrueck.de*
- *kskwd.de*
- *ksn-northeim.de*
- *lzo.com*
- *mybusinessbank.co.uk/cs70_banking*
- *naspa.de*
- *nationet.com/AppServices/SignOn/SignOnProcess*
- *nospa.de*
- *npbs.co.uk*
- *online-business.lloydstsb.co.uk*
- *rbsdigital.com/AccountSummary.aspx
- *rbsdigital.com/login.aspx*
- *sls-direkt.de*
- *sparkasse*.de*
- *spk-*.de*
- *sskm.de*
- *tuxedomoney.com*
- *vspk-*.de*
- *your.egg.com/customer*
- htt*.firstdirect.com/1/2/balances;jsessionid=*?BlitzToken=true&fsdtSideMenuState=0
- http*.aol.co*
- http*.firstdirect.com/1/2/!ut/p/kcxml/*jsessionid=*
- http*.firstdirect.com/1/2/*
- http*.firstdirect.com/1/2/;jsessionid=*=idv.Authentication
- http*.firstdirect.com/1/2/idv.Logoff?nextPage=fsdtBalances
- http*.firstdirect.com/1/2/sLink;jsessionid=*IBSelectedAccount=*
- http*.firstdirect.com/1/2/transactions;jsess*
- http*://*alliance-leicester.co.uk*
- http*://*cbonline.co.uk*
- http*://*co-operativebank.co.uk*
- http*://*hsbc.co.uk*
- http*://*smile.co.uk*
- http*://*ybonline.co.uk*
- http*halifax*co.uk*
- http*mail.live.com/mail*
- http*online-business.lloydstsb.co.uk/miheld.ibc
- http*yahoo.com*
- https://*.banking.first-direct.com/1/2/balances*
- https://*abbeynational.co.uk*
- https://*cbonline.co.uk/*/accountDetailsProcessSelectAccount.ctl*
- https://*cbonline.co.uk/*/acctInfo_tranHist.ctl*
- https://*cbonline.co.uk/*/payments_transferNewConfirm.ctl*
- https://*cbonline.co.uk/*/setupSecurityQuestionPage.ctl
- https://*cbonline.co.uk/*setupPartialPasswordPage.ctl
- https://*cbonline.co.uk/cbib/cbib/acctInfo_acctBal.ctl*
- https://*cbonline.co.uk/cbib/cbib/index.jsp*
- https://*cbonline.co.uk/cbib/cbib/payments_transferNew.ctl*
- https://*cbonline.co.uk/cbib/cbib/payments_transferNewValidate.ctl*
- https://*ibank.internationalbanking.barclays.com/*
- https://*ulsterbankanytimebanking.*/login.aspx*
- https://*ulsterbankanytimebanking.co.uk/*
- https://*ybonline.co.uk/*/accountDetailsProcessSelectAccount.ctl*
- https://*ybonline.co.uk/*/acctInfo_tranHist.ctl*
- https://*ybonline.co.uk/*/payments_transferNewConfirm.ctl*
- https://*ybonline.co.uk/*/setupSecurityQuestionPage.ctl
- https://*ybonline.co.uk/*setupPartialPasswordPage.ctl
- https://*ybonline.co.uk/ybib/ybib/acctInfo_acctBal.ctl*
- https://*ybonline.co.uk/ybib/ybib/index.jsp*
- https://*ybonline.co.uk/ybib/ybib/payments_transferNew.ctl*
- https://*ybonline.co.uk/ybib/ybib/payments_transferNewValidate.ctl*
- https://cardservicing.tescofinance.com/RBSG_Consumer/UserLogin.do*
- https://cardservicing.tescofinance.com/RBSG_Consumer/VerifyLogin.do*
- https://cardsonline-consumer.com/RBSG_Consumer/*
- https://database.acornmediauk.com/*
- https://ebanking.northernbank.co.uk/northernnetbank/startnbac.htm
- https://ibank.cahoot.*/servlet/com.aquarius.security.authentication.servlet.LogonServlet*
- https://ibank.cahoot.com/*
- https://ibank.internationalbanking.barclays.com/logon*
- https://ibank.reliancebankltd.com/*/home*
- https://ibank.reliancebankltd.com/i.web/home*
- https://my.if.com/*
- https://my.if.com/PlanReviewAct/plan.asp*
- https://my.if.com/_mem_bin/formslogin.asp*
- https://myonlineaccounts*.abbeynational.co.uk/CentralLogonWeb/MyPersonalHomepage*
- https://myonlineaccounts3.abbeynational.co.uk/GPCC_ENS/BtoChannelDriver.ssobto*
- https://olb2.nationet.com*
- https://online-business.lloydstsb.co.uk/*
- https://online-business.lloydstsb.co.uk/account.ibc?Account=*
- https://online-business.lloydstsb.co.uk/actionaccount.ibc?Account=*&PageRequired=MostRecent&*
- https://online-business.lloydstsb.co.uk/customer.ibc
- https://online-business.lloydstsb.co.uk/customer.ibc*
- https://online-business.lloydstsb.co.uk/logon.ibc
- https://online-business.lloydstsb.co.uk/miheld.ibc
- https://online-business.lloydstsb.co.uk/statement.ibc?Account=*
- https://online-business.lloydstsb.co.uk/transferpaym.ibc?Account=*
- https://online-offshore.lloydstsb.com/*
- https://online.islamic-bank.com/online/aspscripts/secret*.asp*
- https://online.lloydstsb.co.u*
- https://online.ybs.co.uk/public/authentication/login2.do*
- https://onlinebanking.firsttrustbank.co.uk/*
- https://secure.ingdirect.co.uk/INGDirect.html?command=displayClientAccountSummary*
- https://secure.ingdirect.co.uk/InitialINGDirect.html*
- https://secure.lloydstsb.co.uk/personal/*
- https://secure.lloydstsb.co.uk/personal/a/account_details/*
- https://secure.lloydstsb.co.uk/personal/a/account_overview/
- https://secure.lloydstsb.co.uk/personal/a/deletepayee/deletepayee.jsp
- https://secure.lloydstsb.co.uk/personal/a/logon/*ntermemorableinformation.jsp
- https://secure.lloydstsb.co.uk/personal/a/makepayment/confirmpayeedetails.jsp
- https://secure.lloydstsb.co.uk/personal/a/makepayment/payeesetupsuccessfully.jsp
- https://secure.lloydstsb.co.uk/personal/a/viewproductdetails/ViewProductDetails.jsp
- https://secure.lloydstsb.co.uk/personal/a/viewproductdetails/ViewProductDetails.jsp?pnlTabpane=1&al=
- https://secure.natweststockbrokers.co.uk/nws-secure2/*
- https://service.oneaccount.com/*/OSV2?event=login&pt=3
- https://service.oneaccount.com/onlineV2/*
- https://service.oneaccount.com/onlineV2/*viewPortal*
- https://uk.virginmoney.com/virgin/service/credit-card/*
- https://welcome10.co-operativebankonline.co.uk/*security?*
- https://welcome23.smile.co.uk/SmileWeb/*
- https://welcome23.smile.co.uk/SmileWeb/passcode.do
- https://welcome27.co-operativebank.co.uk/CBIBSWeb/*
- https://welcome27.co-operativebank.co.uk/CBIBSWeb/passcode.do
- https://www.365online.com/servlet/Dispatcher/*
- https://www.365online.com/servlet/Dispatcher/login.htm
- https://www.365online.com/servlet/Dispatcher/login2.htm
- https://www.365online.com/servlet/Dispatcher/validate.htm
- https://www.accessmycardonline.com/RBS_Consumer/*
- https://www.bankcardservices.co.uk/NASApp/NetAccessXX/*
- https://www.bankcardservices.co.uk/NASApp/NetAccessXX/AccountSnapshotScreen?acctID*
- https://www.bankline.coutts.com/CWSLogon/*
- https://www.bankline.coutts.com/CWSLogon/4P/CheckId.do
- https://www.bankline.coutts.com/CWSLogon/4P/CheckPPPP.do
- https://www.bankline.rbs.com/CWSLogon/4P/CheckId.do*
- https://www.bankline.rbs.com/CWSLogon/logon.do*
- https://www.barclayswealth.com/login/action/logon/unauthenticated/personal/loginDetailsNotStored
- https://www.barclayswealth.com/login/action/logon/unauthenticated/personal/loginSigning
- https://www.capitaloneonline.co.uk/*
- https://www.cardonebanking.com/auth*
- https://www.caterallenonline.co.uk/WebAccess.dll
- https://www.citibank.co.uk/*/portal/Index*
- https://www.citibank.co.uk/*/signon/uname/HomePage*
- https://www.edirectdebit.com/administration/client/logon.aspx
- https://www.hsbc.co.uk/1/2/*
- https://www.hsbc.co.uk/1/2/personal/internet-banking;*
- https://www.icicibank.co.uk/UKRET/BANKAWAY*
- https://www.moneybookers.com/app/my_account.pl
- https://www.mybusinessbank.co.uk/cs70_banking/*
- https://www.mybusinessbank.co.uk/cs70_banking/logon*
- https://www.mybusinessbank.co.uk/cs70_banking/logon/challenge/submit
- https://www.mybusinessbank.co.uk/cs70_banking/logon/logon/enrollPassword
- https://www.mybusinessbank.co.uk/cs70_banking/logon/logon/password
- https://www.mybusinessbank.co.uk/cs70_banking/logon/logon/pmPassword
- https://www.mybusinessbank.co.uk/cs70_banking/logon/sbuser/getPassword
- https://www.nochex.com/*
- https://www.paypal.com/*/cgi-bin/webscr?cmd=*_account*
- https://www.paypal.com/*/cgi-bin/webscr?cmd=_account*
- https://www.paypal.com/*/cgi-bin/webscr?cmd=_login-done*
- https://www.paypal.com/*/webscr?cmd=_login-done*
- https://your.egg.com/customer/personaldetails/yourinformation.aspx
- https://your.egg.com/customer/yourmoney.aspx
It attempts to steal information from the following banks and/or other financial institutions:
- Alliance & Leicester
- BAWAG
- Bank of Ireland - 365 Online
- Bank of Scotland
- Barclays
- Cahoot
- Capital One
- Cater Allen
- Citibank
- Clydesdale
- Co-Operativebank
- Commerzbank
- Coutts Bankline
- Coventry Building Society
- Ebay
- Egg
- Fiducia
- First Direct
- First Trust Bank
- HSBC
- Halifax
- ICICI Bank
- ING Direct
- Intelligent Finance
- Islamic Bank
- Kreis-Sparkasse Northeim
- Kreissparkasse Gross-Gerau
- Kreissparkasse Ludwigsburg
- Kreissparkasse München Starnberg
- Kreissparkasse Rhein-Hunsrück
- Kreissparkasse Wiedenbrück
- Lloyds
- Moneybookers
- Nassauische Sparkasse
- NatWest Stockbrokers
- Nationwide
- Nochex
- Northern Bank
- Norwich and Peterborough Building Society
- OSPM
- PayPal
- RBS
- Reliance Bank
- Santander
- Smile
- Sparkasse
- Sparkasse Langen-Seligenstadt
- Stadtsparkasse München
- Tesco Bank
- Tuxedo Money Solutions
- Ulster Bank
- Virgin Money
- Yahoo
- Yorkshire
- eDirectDebit
Stolen Information
This spyware sends the gathered information via HTTP POST to the following URL:
- http://{BLOCKED}ead.co.cc/admin/Admin/Setup_files/base.php
Variant Information
This spyware has the following MD5 hashes:
- 4969c6682734abeee3c46f35e5e186ba
It has the following SHA1 hashes:
- 4665034127a674d8ec438133951fb695d83ff697
SOLUTION
8.900
7.680.07
06 Dec 2010
12/6/2010 12:00:00 AM
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 TROJ_ZBOT.BYU using the Recovery Console
Step 3
Delete this registry value
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
- {random CLSID}=%Application Data%\{random1}\{random}.exe
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_ZBOT.BYU. 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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