TSPY_ZBOT.FJEC
Microsoft : PWS:Win32/Zbot ; Kaspersky : Trojan-Spy.Win32.Zbot
Windows 2000, XP, Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
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
135,112 bytes
PE
Yes
27 Nov 2010
Arrival Details
This spyware may be downloaded from the following remote sites:
- http://{BLOCKED}sein.net/22oct_bir.exe
Installation
This spyware adds 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.)
It injects itself into the following processes running in the affected system's memory:
- explorer.exe
- taskhost.exe
- taskeng.exe
- Dwm.exe
- wscntfy.exe
- ctfmon.exe
- rdpclip.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} = %Application Data%\{random folder name 1}\{random file name}.exe
It drops the following files:
- %Application Data%\{random folder name 1}\{random file name}.exe - copy of itself
- %Application Data%\{random folder name 2}\{random file name} - contains encrypted stolen data
(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.)
Other System Modifications
This spyware adds the following registry keys as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
{random characters}
It creates the following registry entry(ies) to bypass Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Windows%\EXPLORER.EXE = %Windows%\EXPLORER.EXE:*:Enabled:Windows Explorer
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:
- *.abbeynational.co.uk/*
- *.barclays.co.uk*
- *.barclays.co.uk*barcaz.php*
- *.barclays.co.uk*bg.php*
- *.firstdirect.com*splash*trusteer*
- *.firstdirect.com/1/2/*
- *.hsbc.co.uk/1*
- *.mybank.alliance-leicester.co.uk*
- *abbeynational.co.uk*abbeyaz.*php*
- *abbeynational.co.uk*bg.php*
- *alliance*leicester.co.uk*bg.php*
- *alliance*leicester.co.uk*leicesteraz.php*
- *firstdirect.com*bg.php*
- *firstdirect.com*firstaz.php*
- *hsbc.co.uk*az.php*
- *hsbc.co.uk*bg.php*
- *nwolb.co*
- *nwolb.co*az.php*
- *nwolb.co*bg.php*
- *retail.abbeynational.co.uk/EBAN_ENS/BtoChannelDriver.ssobto*
- http://myonlineaccounts2.abbeynational.servat.cc/abbey/bg.php
- http://myonlineaccounts2.abbeynational.servat.cc/js/abbeyaz.js
- http://recruiter.jobsearch.co.uk/login.cgi*
- http://www.barclayscouk.cc/barc/bg.php
- http://www.barclayscouk.cc/js/barcaz.js
- http://www.mybank.alliance-leiceter.cc/js/leicesteraz.js
- http://www.mybank.alliance-leiceter.cc/leicester/bg.php
- http://www.nsvc.cc/az.js
- http://www.nsvc.cc/hsbc/bg.php
- http://www.nwolb.co.uk.servat.cc/js/natwestaz.js
- http://www.nwolb.co.uk.servat.cc/natwest/bg.php
- http://www.redgoldfish.co.uk/advertisers/login.aspx*
- http://www.vacancycentral.co.uk/wscrm/login.php*
- http://www1.banking.firstdirest.cc/first/bg.php
- http://www1.banking.firstdirest.cc/js/firstaz.js
It accesses the following site to download its configuration file:
- http://{BLOCKED}sein.net/22oct_bir.cpm
- http://{BLOCKED}otions.ru/14oct_usa.cpm
- http://{BLOCKED}icks.ru/14oct_usa.cpm
It attempts to steal information from the following banks and/or other financial institutions:
- Alliance & Leicester
- Barclays
- First Direct
- HSBC
- Natwest
- Santander
Drop Points
Stolen information is uploaded to the following websites:
- http://{BLOCKED}cyis.com/yahooman.php
Other Details
This spyware does the following:
- Adds the following registry entries to disable Internet Explorer (IE):
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter
Enabled = 0
EnabledV8 = 0 - Steals the following information:
- Personal certificates (MY)
- FTP credentials for the following FTP applications:
- FlashXP
- Ghisler
- IPSwitch
- Filezilla
- FTPFar
- WinSCP
- FTPCommander
- CoreFTP
- SmartFTP
- Flashplayer data
- Internet session cookies
Variant Information
This spyware has the following MD5 hashes:
- 7f8a93b1c0e8d90ad848d86cff0bb4ac
It has the following SHA1 hashes:
- d11ab6f3a65d0398f5efafe5d486206d8d39ea0f
SOLUTION
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
Restart in Safe Mode
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
- {GUID} = %Application Data%\{random folder name 1}\{random file name}.exe
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %Windows%\EXPLORER.EXE = %Windows%\EXPLORER.EXE:*:Enabled:Windows Explorer
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter
- Enabled = 0
- EnabledV8 = 0
Step 4
Delete this registry key
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 characters}
Step 5
Search and delete this folder
- %Application Data%\{random folder name 1}
- %Application Data%\{random folder name 2}
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_ZBOT.FJEC. 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.
Step 7
Scan your computer with your Trend Micro product to delete files detected as TSPY_ZBOT.FJEC. 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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