Adware.Borlan

SUMMARY

Behavior

Adware.Borlan acts as an Internet Explorer browser helper object which displays Chinese based advertisements while users browse the Internet.

Symptoms

One or more files detected as Adware.Borlan

Transmission

This risk must be manually installed.

Protection

• Virus Definitions (LiveUpdate™ Weekly) November 23, 2005
• Virus Definitions (Intelligent Updater) November 22, 2005

TECHNICAL DETAILS

When Adware.Borlan is executed, it performs the following actions:

1. Creates the following files:
   
   • %ProgramFiles%MMSAssistmms.ini
   • %ProgramFiles%MMSAssistMMSASS~1.DLL
   • %System%stdup.dll
   • %System%std.ini
   • %System%stdd.ini
   • %System%stdcache*.*
   • %Temp%mq*.*
     
     Note:
   • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:Program Files.
   • %System% is a variable that refers to the System folder. By default this is C:WindowsSystem (Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP).
   • %Temp% is a variable that refers to the Windows temporary folder. By default, this is C:WindowsTEMP (Windows 95/98/Me/XP) or C:WINNTTemp (Windows NT/2000).
     
     
2. Creates the following registry keys:
   
   HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{6671A431-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREClassesInterface{74289A79-E652-4A57-A6B9-EE64AD532A8D}
   HKEY_LOCAL_MACHINESOFTWAREClassesInterface{AB45CE36-C280-4525-BCF9-1BD01D3E4B57}
   HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{077525AC-C681-4139-8C3E-B582BDD375C7}
   HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{22F87D75-7DD1-4545-94B3-CA80C0F462C6}
   HKEY_LOCAL_MACHINESOFTWAREClassesAd.AxObj
   HKEY_LOCAL_MACHINESOFTWAREClassesAd.AxObj.1
   HKEY_LOCAL_MACHINESOFTWAREClassesInsII.brins
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssist
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssist.1
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssistMenu
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssistMenu.1
   HKEY_LOCAL_MACHINESOFTWAREClassesFBDF84372483F7693F63FF
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerExtensions{6671A433-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{6671A431-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallMMSAssist
   HKEY_LOCAL_MACHINESOFTWAREMMSAssist
   HKEY_LOCAL_MACHINESOFTWAREStdup
   HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExtStats{6A512BF7-EC78-4E8D-9841-6C02E8FA9838}
   HKEY_CURRENT_USERSoftwareRFO
   HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesStdService
   HKEY_LOCAL_MACHINESYSTEMControlSet001ServicesStdService
   
   
3. Creates a service with the following attributes:
   
   ImagePath: "C:WINDOWSsystem32undll32.exe <PATH_TO_DLLFILE>"
   DisplayName: "StdService"
   
   
4. Adds the value
   
   "{6671A433-5C3D-463d-A7CF-5587F9B7E191}" = "0x00002002"
   
   to the registry key
   
   HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerExtensionsCmdMapping
   
   
5. Creates the key:
   
     >> ²ÊÐÅ·¢ËÍ <<
   
   under the subkey
   
   HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMenuExt
   
   Note: This subkey is encoded using GB2312 (Guojia Biaozhun) encoding which is the official character set of the Peoples Republic of China. If you do not have the appropriate language pack installed, the key will be displayed as garbled characters, as shown above.
   
   
6. Modifies the values:
   
   "Start Page" = "[http://]www.k265.com/[REMOVED]"
   "Default_Page_URL" = "[http://]www.k265.com/[REMOVED]"
   
   in the registry keys
   
   HKEY_LOCAL_MACHINESoftwareMicrosoftInternet ExplorerMain
   HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMain
   
   
7. Downloads configuration and update information from borlander.cn.
   

REMOVAL

The following instructions pertain to all Symantec antivirus products that support security risk detection.

1. Update the definitions.
2. Close all open Internet Explorer windows.
3. Find and stop the service.
4. Run a full system scan.
5. Delete any values added to the registry.
   

For specific details on each of these steps, read the following instructions.

1. To update the definitions
To obtain the most recent definitions, start your Symantec program and run LiveUpdate.


2. To close all open Internet Explorer windows
Because this risk functions as a Microsoft Internet Explorer plug-in, it is necessary to close all open Internet Explorer windows to remove it. If you are reading this writeup in Internet Explorer, print this writeup using our printer-friendly option at the top of the page, or write down the following instructions, and then close all Internet Explorer windows.


3. To find and stop the service

1. Click Start > Run.
2. Type services.msc, and then click OK.
3. Locate and select the service that was detected.
4. Click Action > Properties.
5. Click Stop.
6. Change Startup Type to Manual.
7. Click OK and close the Services window.
8. Restart the computer.

4. To run the scan

1. Start your Symantec antivirus program, and then run a full system scan.
   
2. If any files are detected, and depending on which software version you are using, you may see one or more of the following options:
   
   Note: This applies only to versions of Norton AntiVirus that support security risk detection. If you are running a version of Symantec AntiVirus Corporate Edition that supports security risk detection, and security risk detection has been enabled, you will only see a message box that gives the results of the scan. If you have questions in this situation, contact your network administrator.
   
   • Exclude (Not recommended): If you click this button, it will set the risk so that it is no longer detectable. That is, the antivirus program will keep the security risk on your computer and will no longer detect it to remove from your computer.
     
     
   • Ignore or Skip: This option tells the scanner to ignore the risk for this scan only. It will be detected again the next time that you run a scan.
     
     
   • Cancel: This option is new to Norton Antivirus 2005. It is used when Norton Antivirus 2005 has determined that it cannot delete a security risk. This Cancel option tells the scanner to ignore the risk for this scan only, and thus, the risk will be detected again the next time that you run a scan.
     
     To actually delete the security risk:
     • Click its file name (under the Filename column).
     • In the Item Information box that displays, write down the full path and file name.
     • Then use Windows Explorer to locate and delete the file.
       
       
   • Delete: This option will attempt to delete the detected files. In some cases, the scanner will not be able to do this.
     • If you see a message, "Delete Failed" (or similar message), manually delete the file.
     • Click the file name of the risk that is under the Filename column.
     • In the Item Information box that displays, write down the full path and file name.
     • Then use Windows Explorer to locate and delete the file.
       
       
3. Navigate to and delete the file %System%stdd.ini.
   
4. Navigate to and delete the folders
   
   • %ProgramFiles%MMSAssist
   • %System%stdcache
   • %Temp%mq

Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode. Once you have restarted in Safe mode, run the scan again.

After the files are deleted, restart the computer in Normal mode and proceed with the next section.

Warning messages may be displayed when the computer is restarted, since the risk may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [FILE PATH]
Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

5. To delete the values from the registry
Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified subkeys only. Read the document: How to make a backup of the Windows registry.

1. Click Start > Run.
2. Type regedit
   
   Then click OK.
   
   Note: If the registry editor fails to open the risk may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.
   
   
3. Navigate to and delete the subkeys:
   
   HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{6671A431-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREClassesInterface{74289A79-E652-4A57-A6B9-EE64AD532A8D}
   HKEY_LOCAL_MACHINESOFTWAREClassesInterface{AB45CE36-C280-4525-BCF9-1BD01D3E4B57}
   HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{077525AC-C681-4139-8C3E-B582BDD375C7}
   HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{22F87D75-7DD1-4545-94B3-CA80C0F462C6}
   HKEY_LOCAL_MACHINESOFTWAREClassesAd.AxObj
   HKEY_LOCAL_MACHINESOFTWAREClassesAd.AxObj.1
   HKEY_LOCAL_MACHINESOFTWAREClassesInsII.brins
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssist
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssist.1
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssistMenu
   HKEY_LOCAL_MACHINESOFTWAREClassesMMSBho.MMSAssistMenu.1
   HKEY_LOCAL_MACHINESOFTWAREClassesFBDF84372483F7693F63FF
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerExtensions{6671A433-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{6671A431-5C3D-463d-A7CF-5587F9B7E191}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall{6A512BF7-EC78-4e8d-9841-6C02E8FA9838}
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallMMSAssist
   HKEY_LOCAL_MACHINESOFTWAREMMSAssist
   HKEY_LOCAL_MACHINESOFTWAREStdup
   HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExtStats{6A512BF7-EC78-4E8D-9841-6C02E8FA9838}
   HKEY_CURRENT_USERSoftwareRFO
   HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMenuExt  >> ²ÊÐÅ·¢ËÍ <<
   
4. Navigate to the key
   
   HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerExtensionsCmdMapping
   
   and delete the value
   
   "{6671A433-5C3D-463d-A7CF-5587F9B7E191}" = "0x00002002"
   
   
5. Exit the Registry Editor.