PE_LICAT.B-O
Kaspersky: Trojan-Spy.Win32.Zbot.autj ; Symantec: Trojan.Zbot ; Sophos: Mal/FakeAV-BW
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Infects files
This malware is a new LICAT variant that uses a different key for its domain generation algorithm.
To get a one-glance comprehensive view of the behavior of this File infector, refer to the Threat Diagram shown below.
It infects file associated with running processes. Infected files are detected as PE_LICAT.B.
This file infector may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.
It may be injected into processes running in memory.
It infects by inserting its code to unused space in host files.
It opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.
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
Random TCP ports
166,400 bytes
PE
Yes
02 Nov 2010
Downloads files, Steals information
Arrival Details
This file infector may be dropped by other malware.
It may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This file infector drops the following files:
- %Application Data%\{random1}\{random}.exe - copy of itself
- %Application Data%\{random2}\{random}.{3 random alpha character extension name} - encrypted 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.)
It creates 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 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 file infector 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}\{random name}.EXE
Other System Modifications
This file infector adds the following registry keys as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
{random}
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
File Infection
This file infector infects the following file types:
- EXE
It infects by inserting its code to unused space in host files.
Backdoor Routine
This file infector opens a random port to allow a remote user to connect to the affected system. Once a successful connection is established, the remote user executes commands on the affected system.
Web Browser Home Page and Search Page Modification
This file infector modifies the Internet Explorer Zone Settings.
Information Theft
This file infector 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:
- https://*.ebanking-services.com/*/signin.aspx
- https://express.53.com/express/logon.jsp
- ttps://wellsoffice.wellsfargo.com/ceoportal/signon/index.jsp
- https://www.accountcentralonline.com
- https://secure.americanexpress.com
- https://www.bankofamerica.com
- https://chaseonline.chase.com
- https://www.accountonline.com
- https://www.cajalaboral.com
- https://customer.eu.clickandbuy.com
- https://www.discovercard.com/cardmembersvcs/personalprofile/pp/GetInitialInfo
- https://www.ezcardinfo.com
- https://signin.fiabusinesscard.com
- https://www.accountcentralonline.com
- https://www.ibsnetaccess.com
- https://www.macys.com
- ttps://www.moneybookers.com
- https://www.myaccountaccess.com
- https://www.partnercardservices.com
- https://www.paypal.com
- ttps://www.pnccardservicesonline.com
- https://client.schwab.com
- https://www.suntrust.com
- https://content.usaa.com
- cey-ebanking.com
- treasury.pncbank.com/portal/esec/login.ht
- https://www.us.hsbc.com/1/2/
- https://bnycash.bankofny.com/
- ebanking-services.com
- https://www.usaa.com/inet
- https://www.saferpay.com/vt/pay.asp
- https://express.53.com/express/logon
- https://www.business.hsbc.co.uk/1/2/
- https://www.paypal.com/gates/google
- https://direct.53.com/logon53Direct.jsp
- https://www.gotomycard.com/accounts.asp
- https://www.saferpay.com/gates/google
- https://ibank.barclays.co.uk/olb/u/Login
- https://www.moneybookers.com/app/profile.pl
- Zhttps://www.myaccountaccess.com/onlineCard/
- https://www.ezcardinfo.com/AcctSummary.aspx
- https://www.moneybookers.com/gates/google
- https://chsec.wellsfargo.com/login/login.fcc
- https://securentrycorp.amegybank.com
- https://ssl.selectpayment.com/
- https://chaseonline.chase.com/MyAccounts.aspx
- https://www.paypal.com/C/cgi-bin/webscr
- https://sitekey.bankofamerica.com/sas/maint.do
- https://online.citibank.com/US/</portal/Home.do
- https://www.hsbccreditcard.com/ecare/viewaccount
- https://www.suntrust.com/portal/server.pt?mode=2
- https://www.mycardstatement.com/AcctSummary.aspx
- https://customer.eu.clickandbuy.com/gates/google
- https://onlinebankingC.wachovia.com/myAccounts.aspx
- https://www.accountcentralonline.com/cmuser/myacct/
- https://www.discovercard.com/cardmembersvcs/achome/
- https://online.wellsfargo.com/das/cgi-bin/session.cgi
- https://www.nordstromcard.com/fdr_nr.service?TRANTYPE
- https://www.statementlook.com/fdr_ge.service?TRANTYPE
- https://wwwC.usbank.com/internetBanking/RequestRouter
- https://www.partnercardservices.com/ecare/viewaccount
- https://client.schwab.com/accounts/summary/summary.aspx
- https://www.paypal.com/C/cgi-bin/webscr?cmd=_login-done
- https://www.hsbccreditcard.com/ecare/control/generic.js
- https://singlepoint.usbank.com/cs70_banking/logon/sbuser
- https://www.paypal.com/de/cgi-bin/webscr?cmd=_login-done
- https://www.fiabusinesscard.com/cgi-bin/ias/
- https://www.linksimprese.sanpaoloimi.com/pmiweb/LoginServlet
- https://www.partnercardservices.com/ecare/control/generic.js
- https://wellsoffice.wellsfargo.com/ceoportal/signon/index.jsp
- https://www.barclaycardus.com/app/ccsite/action/switchAccount
- https://businessaccess.citibank.citigroup.com/cbusol/signon.do
- https://banking.commercebank.com/CBI/Accounts/CBI/Summary.aspxU
- https://onlineeastC.bankofamerica.com/cgi-bin/ias/
- https://www.pnccardservicesonline.com/pages/AccountSummary.aspx
- https://authmaster.nationalcity.com/tmgmt/
- https://treas-mgt.frostbank.com/rdp/cgi-bin/
- https://sitekey.bankofamerica.com/sas/sas-docs/js/commonscript.js
- https://cm.netteller.com/login2008/Authentication/Views/Login.aspx
- https://www.myaccountaccess.com/onlineCard/postLogin.do?phase=start
- https://access.jpmorgan.com/appmanager/jpmalogonportal/jpmalogonhome
- ttps://businessonline.tdbank.com/corporatebankingweb/core/login.aspx
- https://www.comerica.com/
- https://wwwB.comerica.com/
- https://businessonline.huntington.com/BOLHome/BusinessOnlineLogin.aspx
- https://www.ibsnetaccess.com/NASApp/NetAccess/RegisteredAccountsDisplay
- https://businessaccess.citibank.citigroup.com/cbusol/sign
- https://www.discovercard.com/cardmembersvcs/personalprofile/pp/GetInitialInfo
- https://customer.eu.clickandbuy.com/surfer/spring/accounthome-flow
- https://www.ibsnetaccess.com/NASApp/NetAccess/updateQandA.action?target=updtQA
- https://www.paypal.com/C/cgi-bin/webscr?cmd=_profile-credit-card-new-clickthru
- https://onlineeastC.bankofamerica.com/cgi-bin/ias/
- https://online.americanexpress.com/myca/acctsumm/us/action?request_type=authreg_acctAccountSummary
- https://www.hsbccreditcard.com/ecare/customerservice/updatepersonalinfo?&locale=en_US&brand=HB_090_750
- https://www.partnercardservices.com/ecare/customerservice/updatepersonalinfo?&locale=en_US&brand=RZ_500_501
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}pzrjrge.org/news/?s={random number}
It attempts to steal information from the following banks and/or other financial institutions:
- Fifth Third Direct
- Wellsfargo
- HSBC
- American Express
- Bank of America
- Chase
- Citi
- Caja Laboral
- ClickandBuy
- Discover Card
- eZCardInfo
- Card Information Online
- FIA Card Services
- Macy's
- Moneybookers
- Online Account Access
- Partner Card Services
- Paypal
- PNC Card Services
- Charles Schwab
- Suntrust
- USAA
- Mountain National Bank
- PNC Bank
- Business Internet Banking
- Saferpay
- GoToMyCard
- Barclays
- Amegy Bank
- Profit Stars
- Wachovia
- Nordstrom Credit Services
- Statementlook
- US Bank
- Commerce Bank
- Frost Bank
- National City
- Net Teller
- JP Morgan
- TD Bank
- Comerica
- Huntington National Bank
Stolen Information
This file infector sends the gathered information via HTTP POST to the following URL:
- http://{BLOCKED}pzrjrge.org
Other Details
This file infector does the following:
- It infects files associated with running processes.
- Infected files are detected as PE_LICAT.B.
SOLUTION
8.900
7.671.00
03 Dec 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
Remove malware files dropped/downloaded by PE_LICAT.B-O
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\Windows\CurrentVersion\Run
- {GUID}=%Application Data%\{random}\{random name}.EXE
- {GUID}=%Application Data%\{random}\{random name}.EXE
- 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
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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
- In HKEY_CURRENT_USER\Software\Microsoft
- {random}
- {random}
Step 6
Reset Internet security settings
Step 7
Search and delete this folder
- %Application Data%\{random1}
- %Application Data%\{random2}
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as PE_LICAT.B-O. 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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