arrow_back
search
close

TROJ_BANKER.LPU

October 27, 2010
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan may be dropped by other malware.



It modifies registry entries to enable its automatic execution at every system startup.



It displays a fake log-in page when users access certain websites to trick them into providing sensitive information such as their account names and passwords.



  TECHNICAL DETAILS

File Size:

1611776 bytes

Memory Resident:

Yes

Initial Samples Received Date:

17 Dec 2009


Arrival Details


This Trojan may be unknowingly downloaded by a user while visiting the following malicious websites:


    It may be dropped by other malware.



    Installation


    This Trojan drops the following files:

    • %System Root%\winsystem.exe
    • %System%\chamada1728.txt

    (Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)



    Autostart Technique


    This Trojan modifies the following registry entry(ies) to enable its automatic execution at every system startup:



    Information Theft


    This Trojan displays a fake log-in page when a user accesses the following websites:



      Stolen Information


      This Trojan



        Drop Points


        This Trojan



          Variant Information


          This Trojan has the following MD5 hashes:


              SOLUTION


            Step 1


            Scan your computer with your Trend Micro product and note files detected as TROJ_BANKER.LPU


            Step 2



            Locating Malware File(s)

            1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
            2. In the Named input box, type:
            MALWAREFILE_LOCATE
          • In the Look in: drop-down list, select My Computer then press Enter.


            • Step 3


            Delete these registry values

            [ Learn More ]

            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_MACHINESOFTWAREMicrosoftSecurity Center
              • FirewallDisableNotify = 1
              • UpdatesDisableNotify = 1
              • AntiVirusDisableNotify = 1
              • AntiVirusOverride = 1
              • FirewallOverride = 1
            • In HKEY_LOCAL_MACHINESOFTWAREPolicies
              MicrosoftWindowsFirewallDomainProfile
              EnableFirewall = 0
            • In HKEY_LOCAL_MACHINESOFTWAREPolicies
              MicrosoftWindowsFirewall StandardProfile
              EnableFirewall = 0
            • In HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoft
              WindowsWindowsUpdate               DoNotAllowXPSP2 = 1


            Step 4


            Scan your computer with your Trend Micro product and note files detected as TROJ_BANKER.LPU


            Step 5


            Delete these registry values

            [ Learn More ]

            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_MACHINESOFTWAREMicrosoftSecurity Center
              • FirewallDisableNotify = 1
              • UpdatesDisableNotify = 1
              • AntiVirusDisableNotify = 1
              • AntiVirusOverride = 1
              • FirewallOverride = 1
            • In HKEY_LOCAL_MACHINESOFTWAREPolicies
              MicrosoftWindowsFirewallDomainProfile
              EnableFirewall = 0
            • In HKEY_LOCAL_MACHINESOFTWAREPolicies
              MicrosoftWindowsFirewall StandardProfile
              EnableFirewall = 0
            • In HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoft
              WindowsWindowsUpdate               DoNotAllowXPSP2 = 1


            Step 6



            *NOTE: This malware is a DLL file that may come with a main component detected by Trend Micro as another malware. It may also be used by several variants of a certain malware family. If your Trend Micro product detects another malware on your system, refer to the manual removal instructions of that detected malware.


            Step 7


            Terminate the malware/grayware/spyware process:

            [ Learn More ]
            Notes=
          • For Windows 98 and ME users, Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
          • 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 8


            Scan your computer with your Trend Micro product to delete files detected as


            *Note: 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.


            Did this description help? Tell us how we did.