TROJ_BREDOLAB.XP
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan 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 attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.
It deletes itself after execution.
TECHNICAL DETAILS
39,424 bytes
PE
Yes
09 Feb 2011
Steals information
Installation
This Trojan drops the following copies of itself into the affected system:
- %Application Data%\1nhzglrqruuak3hegjguqwizskwkbw12\csrss.exe
(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%\1nhzglrqruuak3hegjguqwizskwkbw12
(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.)
Autostart Technique
This Trojan modifies the following registry entries to ensure it automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Shell = explorer.exe %Application Data%\1nhzglrqruuak3hegjguqwizskwkbw12\csrss.exe
(Note: The default value data of the said registry entry is Explorer.exe.)
Other System Modifications
This Trojan adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
{malware path}\{malware name} = {malware path}\{malware file name}:*:Enabled:ldrsoft
Backdoor Routine
This Trojan 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.
Information Theft
This Trojan 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:
- bankofcyprus.com
- capitalone.com
- cedacri.it
- chase.com
- commbank.com.au
- commerzbanking.de
- csebo.it
- deutsche-bank.de
- finanzportal.fiducia.de
- gruppocarige.it
- ibank.alfabank.ru
- laiki.com
- libertyreserve.com
- online.westpac.com.au
- payment.ru
- perfectmoney.com
- postbank.de
- poste.it
- sparkasse.de
- stgeorge.com.au
- suncorpbank.com.au
- targobank.de
It attempts to steal information from the following banks and/or other financial institutions:
- Bank of Cyprus Group
- Capital One
- Cedacri Group
- Chase
- Commonwealth Bank
- Commerzbank
- Deutsche Bank
- Gruppo Banca Carige
- Liberty Reserve
- Perfect Money
- Postbank
- Poste italiane
- Sparkasse
- St. George Bank
- Suncorp Bank
- Targo Bank
Other Details
This Trojan deletes itself after execution.
SOLUTION
8.900
7.826.09
09 Feb 2011
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
Identify and terminate files detected as TROJ_BREDOLAB.XP
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- {malware path}\{malware name} = {malware path}\{malware file name}:*:Enabled:ldrsoft
- {malware path}\{malware name} = {malware path}\{malware file name}:*:Enabled:ldrsoft
Step 4
Restore this modified 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- From: Shell = explorer.exe %Application Data%\1nhzglrqruuak3hegjguqwizskwkbw12\csrss.exe
To: Shell = Explorer.exe
- From: Shell = explorer.exe %Application Data%\1nhzglrqruuak3hegjguqwizskwkbw12\csrss.exe
Step 5
Search and delete this folder
- %Application Data%\1nhzglrqruuak3hegjguqwizskwkbw12
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_BREDOLAB.XP. 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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