Adware.AdBars

SUMMARY

Behavior

Adware.AdBars is a Browser Helper Object that creates a search bar in Internet Explorer. It also displays advertisement web pages.

Symptoms

One or more files are detected as Adware.AdBars.

Transmission

The file must be manually executed to install this program.

Protection

• Virus Definitions (LiveUpdate™ Weekly) April 6, 2005
• Virus Definitions (Intelligent Updater) April 6, 2005

TECHNICAL DETAILS

When Adware.AdBars is installed, the following actions are performed:

1. Creates the following files:
   
   
   • %System%AdBar.dll
   • %Windir%Downloaded Program FilesDownloadHtml.dll
     
     
     Notes:
   • %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).
   • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:Windows or C:Winnt.
     
     
2. Creates the following registry keys:
   
   
   • HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{C4CA6559-2CF1-48B6-96B2-8340A06FD129}
   • HKEY_LOCAL_MACHINESOFTWAREClassesInterface{EC4ACEBD-8918-4924-869E-FC3C060D2EE9}
   • HKEY_LOCAL_MACHINESOFTWAREClassesInterface{F12DFA04-77C4-47E8-B101-6A2B1E631410}
   • HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{BDEAA8B4-BE40-4B94-B989-065AFCF8A06F}
   • HKEY_LOCAL_MACHINESOFTWAREClassesAdBar.AlisysRubBandTest
   • HKEY_LOCAL_MACHINESOFTWAREClassesDownloadHtml.SetupHtml
   • HKEY_LOCAL_MACHINESOFTWAREClassesDownloadHtml.SetupHtml.1
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall{C4CA6559-2CF1-48B6-96B2-8340A06FD129}
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftCode Store DatabaseDistribution Units{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_CURRENT_USERSoftwareRuboskizo
     
     
3. Modifies the value:
   
   "{C4CA6559-2CF1-48B6-96B2-8340A06FD129}" = "Toolbar Ruboskizo"
   
   in the registry key:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerToolbar
   
   
4. Modifies the value:
   
   "goicfboogidikkejccmclpieicihhlpo ijbaca" = "Ruboskizo S.L."
   
   in the registry key:
   
   HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionWinTrustTrust ProvidersSoftware PublishingTrust Database
   
   
5. Modifies the value:
   
   "7DFDF6841B48C0155A0217E4A9FBFFA653671031" = <encoded value>
   
   in the registry key:
   
   HKEY_CURRENT_USERSoftwareMicrosoftSystemCertificatesTrustedPublisherCertificates
   
   
6. Changes Internet Explorer homepage to "http:// www.turbonXX.com"
   
   
7. Displays advertisements in Internet Explorer.

REMOVAL

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Update the definitions.
2. Run a full system scan.
3. 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 run the scan

1. Start your Symantec antivirus program, and then run a full system scan.
   
2. If any files are detected asAdware.AdBars 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.
       
       If Windows reports that it cannot delete the file, this indicates that the file is in use. In this situation, complete the rest of the instructions on this page, restart the computer in Safe mode, and then delete the file using Windows Explorer. Restart the computer in Normal mode.
       
       
   • 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.
       
       If Windows reports that it cannot delete the file, this indicates that the file is in use. In this situation, complete the rest of the instructions on this page, restart the computer in Safe mode, and then delete the file using Windows Explorer. Restart the computer in Normal mode.

3. To delete the value 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. For instructions refer to the document: How to make a backup of the Windows registry.

1. Click Start > Run.
2. Type regedit
3. Click OK.
   
   
4. Navigate to and delete the key:
   
   • HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{C4CA6559-2CF1-48B6-96B2-8340A06FD129}
   • HKEY_LOCAL_MACHINESOFTWAREClassesInterface{EC4ACEBD-8918-4924-869E-FC3C060D2EE9}
   • HKEY_LOCAL_MACHINESOFTWAREClassesInterface{F12DFA04-77C4-47E8-B101-6A2B1E631410}
   • HKEY_LOCAL_MACHINESOFTWAREClassesTypeLib{BDEAA8B4-BE40-4B94-B989-065AFCF8A06F}
   • HKEY_LOCAL_MACHINESOFTWAREClassesAdBar.AlisysRubBandTest
   • HKEY_LOCAL_MACHINESOFTWAREClassesDownloadHtml.SetupHtml
   • HKEY_LOCAL_MACHINESOFTWAREClassesDownloadHtml.SetupHtml.1
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionExplorerBrowser Helper Objects{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall{C4CA6559-2CF1-48B6-96B2-8340A06FD129}
   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftCode Store DatabaseDistribution Units{51641EF3-8A7A-4D84-8659-B0911E947CC8}
   • HKEY_CURRENT_USERSoftwareRuboskizo
     
     
5. Navigate to the subkey:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerToolbar
   
   
6. In the right pane, delete the value:
   
   "{C4CA6559-2CF1-48B6-96B2-8340A06FD129}" = "Toolbar Ruboskizo"
   
   
7. Navigate to the subkey:
   
   HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionWinTrustTrust ProvidersSoftware PublishingTrust Database
   
   
8. In the right pane, delete the value:
   
   "goicfboogidikkejccmclpieicihhlpo ijbaca" = "Ruboskizo S.L."
   
   
9. Navigate to the subkey:
   
   HKEY_CURRENT_USERSoftwareMicrosoftSystemCertificatesTrustedPublisherCertificates
   
   
10. In the right pane, delete the value:
    
    "7DFDF6841B48C0155A0217E4A9FBFFA653671031" = <encoded value>
    
    
11. Exit the Registry Editor.
    
    

4. To reset the Internet Explorer home page

1. Start Microsoft Internet Explorer.
2. Connect to the Internet, and then go to the page that you want to set as your home page.
3. Click Tools > Internet Options.
4. In the Home page section of the General tab, click Use Current > OK.

For additional information, or if this procedure does not work, read the Microsoft Knowledge Base article: Home Page Setting Changes Unexpectedly, or You Cannot Change Your Home Page Setting, Article ID 320159.