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TROJ_JORIK
Malware type: Trojan
Destructive: No
Platform: Windows 2000, Windows XP, Windows Server 2003
Encrypted: Yes
In the wild: Yes

Overview


This description is based on a compiled analysis of several variants of TROJ_JORIK. Note that specific data such as file names and registry values may vary for each variant.

This Trojan connects to specific URL(s) to send and receive commands from a remote malicious user. It also connects to the specific website(s) to download and execute a malicious file.

It searches through the affected system's Internet cache, cookies, and history to steal user credentials used in websites with specific strings.

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Technical Details


File size: Varies
File type: EXE
Memory resident: Yes
Initial samples received date: 30 Jun 2010
Payload: Steals information, Compromises system security, Downloads files

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Profile%\Application Data\csrss.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
Policies = %User Profile%\Application Data\csrss.exe

Backdoor Routine

This Trojan connects to the following URL(s) to send and receive commands from a remote malicious user:

  • http://{BLOCKED}0.{BLOCKED}7.254.18/1/1.php?q=1
  • http://{BLOCKED}6.{BLOCKED}6.240.18/2/1.php?q=1

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • www.{BLOCKED}nd.com/start.exe
  • www.{BLOCKED}s.com/start.exe

It saves the files it downloads using the following names:

  • %User Profile%\Application Data\{random numbers}.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

NOTES:
It checks for the following to test if it is running in a virtual machine and sandbox: Presence of the following files:

  • %System%\drivers\prleth.sys
  • %System%\drivers\hgfs.sys
  • %System%\drivers\vmhgfs.sys
  • dbghelp.dll
  • sbiedll.dll

Product ID is any of the following:

  • 55274-640-2673064-23950
  • 76487-644-3177037-23510
  • 76487-337-8429955-22614
  • User name is CurrentUser
  • Computer name is SANDBOX
  • BIOS version contains the string VBOX

It terminates and deletes itself if any of the conditions are met.

It searches through the affected system's Internet cache, cookies, and history to steal user credentials used in websites with the following strings:

  • .efirstbank.com
  • .enternetbank.com
  • .nabconnect.nab.com.au
  • .nashvillecitizensbank.com
  • .rbs.com/wps/portal/cb/applications
  • .royalbank.com
  • .sandyspringbank.com
  • .svbconnect.com
  • /cashman/
  • /cashplus/
  • /CLKCCM/
  • /cmserver/
  • /Common/SignOn
  • /onlineserv/CM/
  • /pub/html/
  • /wcmfd/wcmpw/
  • abbeyinternational.com
  • access.rbsm.com/logo
  • alahliecorp.com
  • alahlionline.com
  • alinmaonline.com
  • almubasher.com.sa
  • anb.com.sa
  • anzdirect.co.nz
  • arabi-online.net
  • associatedbank.com
  • baj.com.sa
  • bankalbilad.com
  • banking.calbanktrust.com
  • banking.mashreqbank.com
  • banking.postbank.de
  • bankofthewest.com
  • barclays.co.uk
  • bmoharrisprivatebankingonline.com
  • bnycash.bankofny.com
  • boveda.banamex.com.mx
  • business.hsbc.co.uk
  • businessbanking.cibc.com
  • businessmanager.com
  • businessonline.huntington.com
  • businessonline.tdbank.com
  • businessportal.mibank.com
  • cashanalyzer.com
  • cashmanager.mizuhoe-treasurer.com
  • cashproonline.bankofamerica.com
  • cbd.ae
  • cbdibusiness.ae
  • cibconline.cibc.com
  • citigroup.com
  • commbiz.commbank.com.au
  • commercial.wachovia.com
  • compassbank.com
  • deutsche-bank.de
  • directpay.wellsfargo.com
  • easywebcpo.td.com
  • ebanking-services.com
  • ebc_ebc1961
  • ecocard.com
  • fgb.ae
  • fiducia.de
  • fransicorp.com.sa
  • fransiplus.com
  • ibanking-services.com
  • ifxmanager.bnymellon.com
  • internetbanking.suncorpbank.com.au
  • mbachexpress.com
  • nbad.com
  • neteller.com
  • norisbank.de
  • northerntrust.com
  • online-business.lloydstsb.co.uk
  • online.corp.westpac.com.au
  • onlinebanking.banksterling.com
  • passport.texascapitalbank.com
  • postbank.de
  • premierview.membersunited.org
  • saab.com
  • sabb.com
  • samba.com
  • schwab.com
  • scotiaconnect.scotiabank.com
  • scotiaonline.scotiabank.com
  • securentrycorp.
  • shbonline.com
  • singlepoint.usbank.com
  • ssl.selectpayment.com
  • sso.unionbank.com
  • standardchartered.com
  • treas-mgt.frostbank.com
  • webbankingforbusiness.mandtbank.com
  • webinfocus.mandtbank.com
  • wellsoffice.wellsfargo.com
  • westernunion.

This description is based on the compiled analysis of several variants of TROJ_JORIK. Note that specific data such as file names and registry values may vary for each variant.

Solution


Minimum scan engine: 9.200
First VSAPI Pattern File: 07.274.17
First VSAPI Pattern Release Date: 30 Jun 2010

Trend customers:

    Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.

All Internet users:

    1. Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
    2. Catch malware/grayware before they affect your PC or network. Secure your Web world with Trend Micro products that offer the best anti-threat and content security solutions for home users, corporate users, and ISPs. Go here for more information on Trend Micro products that fit your needs.


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Analysis By: Karl Dominguez

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