TSPY_ZBOT.CBF
Windows 2000, XP, Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 may be injected into processes running in memory.
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.
TECHNICAL DETAILS
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}rserfv.ru/php/002.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
It may be injected into processes running in memory.
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:
- !*.microsoft.com/*
- !http://*myspace.com*
- https://www.gruposantander.es/*
- !http://*odnoklassniki.ru/*
- !http://vkontakte.ru/* @*/login.osmp.ru/*
- @*/atl.osmp.ru/*
- http*://*credem.it/OneToOne/ebank/functions*
- https://bancopostaimpresaonline.poste.it/bpiol/
- https://hbnet.cedacri.it/
- https://hbnet.cedacri.it/HBNET/login.nsf*
- https://www.gbw1.it/cbl/jspPages/form_login_GV.jsp
- https://www.gbw1.it/cbl/exec/login?cmd=showError*
- https://homebanking.cariparma.it/HBPR/Login
- *ib.fineco.it/FinecoWeb/jsp/Main/HBFineco.jsp*
- https://web.secservizi.it/siteminderagent/forms/login.fcc
- https://*sanpaoloimi.com/*
- https://www.gruppocarige.it/grps/vbank/jsp/login.jsp
- https://www.poste.it/online/personale/loginPrivati.fcc
- https://bancopostaonline.poste.it/BPOL/bancoposta/*
- https://privati.internetbanking.bancaintesa.it/sm/login/IN/box_login.jsp
- https://hb.quiubi.it/newSSO/x11logon.htm
- https://www.iwbank.it/private/index_pub.jhtml*
- https://www.isideonline.it/relaxbanking/sso.Login*
- https://scrigno.popso.it*
- https://ib.fineco.it/FinecoWeb/BonificiServlet?actionToInvoke=com.ibm.fineco.bonifici.NuovoBonificoAction
- https://www.poste.it/online/personale/myposte/
- https://www.in-biz.it* GP
- https://www.gbw2.it/cbl/jspPages/form_login_AV.jsp* GP
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}rserfv.in/php/cfg002.bin
- http://{BLOCKED}rserfv.net/php/cfg002.bin
- http://{BLOCKED}rserfv.biz/php/cfg002.bin
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:
- Banca Intesa
- Gruppo Carige
- IW Bank
- Iside
- Microsoft
- Myspace
- OSPM
- Odnoklassniki
- PosteItaliane
- Qui UBI
- Santander
- Scrigno
- Secservizi
- Vkontakte
Drop Points
Stolen information is uploaded to the following websites:
- http://{BLOCKED}rserfv.ru/php/IXsNjAfsRc1D.php
Variant Information
This spyware has the following MD5 hashes:
- a5ab55c1bf97295a01028f4f552e5413
It has the following SHA1 hashes:
- 4a482f514d6d9382ea1b803ff744e31503b4224d
SOLUTION
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
Scan your computer with your Trend Micro product and note files detected as TSPY_ZBOT.CBF
Step 3
Restart in Safe Mode
Step 4
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\Internet Explorer\Privacy
- CleanCookies = 0
- CleanCookies = 0
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- {GUID} = {malware path and file name}
- {GUID} = {malware path and file name}
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %Windows%\EXPLORER.EXE = %Windows%\EXPLORER.EXE:*:Enabled:Windows Explorer
- %Windows%\EXPLORER.EXE = %Windows%\EXPLORER.EXE:*:Enabled:Windows Explorer
Step 5
Reset Internet security settings
Step 6
Scan your computer with your Trend Micro product to delete files detected as TSPY_ZBOT.CBF. 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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