Dialer.PremiumHTML

SUMMARY

Behavior

Dialer.PremiumHTML is a dialer browser help object that attempts to dial a high-cost number using a modem.

Symptoms

The files on the system are detected as Dialer.PremiumHTML.

Transmission

This dialer must be manually installed.

Protection

• Virus Definitions (LiveUpdate™ Weekly) March 6, 2005
• Virus Definitions (Intelligent Updater) March 4, 2005

TECHNICAL DETAILS

When Dialer.PremiumHTML is installed, it performs the following actions:

1. Registers itself as a browser help object by creating and populating the following registry keys:
   
   HKEY_CLASSES_ROOTIberoDialerHTML.IberoDialerHTML
   HKEY_CLASSES_ROOTCLSID{73F0FD85-BD47-4A95-86D1-DE38860462C1}
   HKEY_CLASSES_ROOTTypeLib{B9F743B0-42BF-40DF-B3BC-25F96AF8B32B}
   HKEY_CLASSES_ROOTInterface{91393741-8F5A-4717-898B-DDD96EB2A092}
   HKEY_CLASSES_ROOTInterface{7A696BCB-BFEC-41DA-9ED5-1AF177C25F06}
   
   
2. After installation, when Microsoft Internet Explorer starts, it dials a premium number using the modem.

REMOVAL

The following instructions pertain to all Symantec antivirus products that support Security Risk detection.

1. Update the definitions.
2. Close modem connections
3. Close all open Internet Explorer windows
4. Run a full system scan.
5. Delete the value that was 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 modem connections
This risk uses available modems to create an Internet connection, sometimes without any visible signs. In order to successfully remove this threat, ensure that all modem-based Internet connections are disconnected before proceeding. For instructions on how to do this, consult the appropriate Internet service provider, computer manufacturer, or operating system documentation.


3. To close all open Internet Explorer windows
Because Dialer.PremiumHTML functions as a Microsoft Internet Explorer plugin, 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.


4. To run the scan

1. Start your Symantec antivirus program, and then run a full system scan.
   
2. If any files are detected as Dialer.PremiumHTML 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 threat 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 threat 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 threat for this scan only, and thus, the threat 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.
       
       
   • 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 threat 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.
       

5. 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. Read the document, "How to make a backup of the Windows registry," for instructions.

1. Click Start > Run.
   
2. Type regedit
   
   Then click OK.
   
   
3. Navigate to the registry key:
   
   HKEY_CLASSES_ROOT
   
   
4. In the right pane, delete the subkey:
   
   IberoDialerHTML.IberoDialerHTML
   
   
5. Navigate to the key:
   
   HKEY_CLASSES_ROOTCLSID
   
   
6. In the right pane, delete the subkey:
   
   {73F0FD85-BD47-4A95-86D1-DE38860462C1}
   
   
7. Navigate to the key:
   
   HKEY_CLASSES_ROOTTypeLib
   
   
8. In the right pane, delete the subkey:
   
   {B9F743B0-42BF-40DF-B3BC-25F96AF8B32B}
   
   
9. Navigate to the key:
   
   HKEY_CLASSES_ROOTInterface
   
   
10. In the right pane, delete the subkey:
    
    {91393741-8F5A-4717-898B-DDD96EB2A092}
    
    
11. Navigate to the key:
    
    HKEY_CLASSES_ROOTInterface
    
    
12. In the right pane, delete the subkey:
    
    {7A696BCB-BFEC-41DA-9ED5-1AF177C25F06}
    
    
13. Exit the Registry Editor.