TSPY_ZBOT.ZYF

This spyware may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

It creates folders where it drops its files.

It modifies the Internet Explorer Zone Settings.

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 attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.

Arrival Details

This spyware may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

It may be downloaded from the following remote sites:

• http://{BLOCKED}dvanced-cfg3.com/monte-karlo/us.exe

Installation

This spyware drops the following files:

• %Application Data%\{random1}\{random}.exe - copy of itself
• %Application Data%\{random2}\{random}.{3 random alpha character extension name} - encrypted file

(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 is injected into the following processes running in memory:

• ctfmon.exe
• dwm.exe
• explorer.exe
• rdpclip.exe
• taskeng.exe
• taskhost.exe
• wscntfy.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
{GUID} = {malware path and file name}

Other System Modifications

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

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Privacy
CleanCookies = 0

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Windows%\EXPLORER.EXE = %Windows%\EXPLORER.EXE:*:Enabled:Windows Explorer

Web Browser Home Page and Search Page Modification

This spyware modifies the Internet Explorer Zone Settings.

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:

• *.citibank.com/US/JPS/portal/Index.do*
• *.citibank.com/US/JRS/portal/accountSummary.do
• *login.live.com*
• *login.yahoo.com*
• *online.wellsfargo.com/das/cgi-bin/session.cgi*
• *online.wellsfargo.com/login*
• *wellsfargo.com/
• *www.bankofamerica.com*
• *www.bankofamerica.com/*
• htt*://www.citi*com/*
• http*chase.com/
• http://www.facebook.com/index.ph*
• https://*.bankofamerica.com/cgi-bin/ias/*
• https://*.chase.com/MyAccounts.aspx*
• https://*chase.com/*
• https://banking.chase.com/AccountActivity/AccountDetails.aspx?AI=*
• https://businessonline.tdbank.com/CorporateBankingWeb/Core/CustomerService/CustomerService.aspx
• https://businessonline.tdbank.com/CorporateBankingWeb/Core/CustomerService/ModifySecurityQuestions.aspx
• https://businessonline.tdbank.com/CorporateBankingWeb/Core/InformationReporting/AccountPortfolio.aspx
• https://chaseonline.chase.com/MyAccounts.aspx
• https://chaseonline.chase.com/secure/ServiceActivation/LOBServiceController.aspx?_context=wire
• https://chaseonline.chase.com/secure/serviceactivation/confirmation/confirm.aspx
• https://chaseonline.chase.com/secure/serviceactivation/confirmation/error.aspx
• https://chaseonline.chase.com/secure/serviceactivation/legalagreements/legalagreement.aspx
• https://chaseonline.chase.com/secure/serviceactivation/primaryaccount/primaryaccount.aspx
• https://chaseonline.chase.com/secure/serviceactivation/secauth/otpdeliverymode.aspx
• https://chaseonline.chase.com/secure/serviceactivation/secauth/otpdeliverymodeconfirmation.aspx
• https://chaseonline.chase.com/secure/serviceactivation/secauth/secauthinformation.aspx
• https://chaseonline.chase.com/secure/serviceactivation/secauth/validateotp.aspx
• https://online.citibank.com/US/*/portal/Home.do*
• https://online.citibank.com/US/*/portal/menu.do*
• https://online.wamu.com/Servicing/Servicing.aspx?*
• https://online.wellsfargo.com/das/cgi-bin/session.cgi*
• https://onlineeast#.bankofamerica.com/cgi-bin/ias/*/CustomerServiceMenuEntryPoint?custAction=75
• https://onlineeast#.bankofamerica.com/cgi-bin/ias/*/GotoCustomerServiceMenu
• https://onlineeast#.bankofamerica.com/cgi-bin/ias/*/GotoWelcome
• https://payments.chase.com/Wire/wireaddconfirm.aspx
• https://payments.chase.com/Wire/wireaddform2.asp*
• https://payments.chase.com/Wire/wireaddverify.aspx
• https://payments.chase.com/Wire/wirerecipientaddconfirm.aspx
• https://payments.chase.com/Wire/wirerecipientaddform2.aspx
• https://payments.chase.com/Wire/wirerecipientaddroutingnumber.aspx
• https://payments.chase.com/Wire/wirerecipientaddverify.aspx
• https://sitekey.bankofamerica.com/sas/challengeQandA.do
• https://sitekey.bankofamerica.com/sas/maint.do
• https://sitekey.bankofamerica.com/sas/sas-docs/js/commonscript.js
• https://sitekey.bankofamerica.com/sas/signonSetup.do
• https://stmts.chase.com/StmtList.aspx?*
• https://www.ibsnetaccess.com/NASApp/NetAccess/LoginValidation

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}vanced-cfg4.com/monte-karlo/usdase.db
• http:/{BLOCKED}vanced-cfg5.com/monte-karlo/usdase.db
• http://{BLOCKED}vanced-cfg6.com/monte-karlo/usdase.db
• http://{BLOCKED}vanced-cfg7.com/monte-karlo/usdase.db
• http://{BLOCKED}vanced-cfg8.com/monte-karlo/usdase.db

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

It attempts to steal information from the following banks and/or other financial institutions:

• Bank of America
• Chase
• Citibank
• Facebook
• TD Bank
• Washington Mutual
• Wells Fargo

Drop Points

Stolen information is uploaded to the following websites:

• http://{BLOCKED}.{BLOCKED}.197.24/~hosting/woops/ttf.php

Variant Information

This spyware has the following MD5 hashes:

• ae4ae18ab9f30fcdc132754b00e81d3b

It has the following SHA1 hashes:

• 091e1f2cabb852ae1e8607d03e1d48d619d21376