Dialer.Nunci - Removal

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

1. Update the definitions.
2. Close modem connections
3. Run a full system scan.
4. Restore the correct telephone number of your ISP for dial-up connection.
5. Delete links added by the risk.
6. Reset the Internet Explorer home page.
7. Reverse the changes that were made to the registry.
8. Delete the added lines from the Windows Hosts file.
   

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 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.
       
       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.
       

Important: If your Symantec antivirus product reports that it cannot delete a detected file, Windows may be using the file. To fix 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.

4. To restore the correct telephone number of your ISP for dial-up connection
Note: The location of the RAS phone-book file, rasphone.pbk, may vary and some computers may not have this file.
For example, if the file exists in Windows XP, it is usually located in the C:\Documents and Settings\All Users\Application Data\Microsoft\Network\Connections\Pbk folder.

Follow the instructions for your operating system:

• Windows 95/98/Me/NT/2000
  1. Click Start, point to Find or Search, and then click Files or Folders.
  2. Make sure that "Look in" is set to (C:) and that "Include subfolders" is checked.
  3. In the "Named" or "Search for..." box, type:
     
     rasphone.pbk
     
     
  4. Click Find Now or Search Now.
  5. If you find rasphone.pbk, right-click the file, and then click Open With.
  6. Deselect the Always use this program to open this program check box.
  7. Scroll through the list of programs and double-click Notepad.
  8. When the file opens, search for the section named:
     
     [RENConnector]
     
  9. Remove all the entries of this section.
  10. Close Notepad and save your changes when prompted.
      
      
• Windows XP
  1. Click Start, and then click Search.
  2. Click All files and folders.
  3. In the "All or part of the file name" box, type:
     
     rasphone.pbk
     
     
  4. Verify that "Look in" is set to "Local Hard Drives" or to (C:).
  5. Click More advanced options.
  6. Check Search system folders.
  7. Check Search subfolders.
  8. Click Search.
  9. If you find rasphone.pbk file, right-click the file, and then click Open With.
  10. Deselect the Always use this program to open this program check box.
  11. Scroll through the list of programs and double-click Notepad.
  12. When the file opens, search for the section named:
      
      [RENConnector]
      
  13. Remove all the entries of this section.
  14. Close Notepad and save your changes when prompted.
      

5. To delete the links added by the risk

1. Click Start > Programs > Accessories > Windows Explorer.
2. Navigate to and delete the following files:
   
   • %UserProfile%\Desktop\FOTO - ANNUNCI - FILM - VIDEOCHAT.lnk
   • %UserProfile%\Start Menu\Programs\FOTO - ANNUNCI - FILM - VIDEOCHAT.lnk
   • %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\FOTO - ANNUNCI - FILM - VIDEOCHAT.lnk
     
3. Exit Windows Explorer.
   

6. 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.


7. Reverse the changes that were made to 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 keys 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 subkey:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
   
4. In the right pane, delete the values:
   
   "Connector" = "%System%\Winx\[DIALER FILE NAME].EXE -n"
   "SNSS.EXE" = "%System%\snss.exe"
   
   
5. Navigate to and delete the subkeys:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
   \{54F7FD6E-E782-4F9F-8FF0-677090048729}
   HKEY_CURRENT_USER\Software\Freeware\{AC5ACED1-97DB-4A2A-81A9-ACFC8ECA1085}
   HKEY_CURRENT_USER\Software\Freeware\{FFB51760-344E-4FFB-BFFF-4B18C7AC1D63}
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions
   \{FFB51760-344E-4FFB-BFFF-4B18C7AC1D63}
   HKEY_LOCAL_MACHINE\SOFTWARE\CLSID\{AE71A324-1EF2-40BC-ADDC-30FD9CF95F87}
   

8. To delete the added lines from the Windows Hosts file
Note: The location of the Hosts file may vary and some computers may not have this file. For example, if the file exists in Windows 98, it will usually be in C:\Windows; and it is located in the C:\WINNT\system32\drivers\etc folder in Windows 2000. There may also be multiple copies of this file in different locations.
Follow the instructions for your operating system:

• Windows 95/98/Me/NT/2000
  1. Click Start, point to Find or Search, and then click Files or Folders.
  2. Make sure that "Look in" is set to (C:) and that "Include subfolders" is checked.
  3. In the "Named" or "Search for..." box, type:
     
     hosts
     
     
  4. Click Find Now or Search Now.
  5. For each Hosts file that you find, right-click the file, and then click "Open With."
  6. Deselect the "Always use this program to open this program" check box.
  7. Scroll through the list of programs and double-click Notepad.
  8. When the file opens, delete all the entries in the Hosts file, except for the following line:
     
     127.0.0.1     localhost
     
     Note: If this line does not exist, add it to the file.
     
  9. Close Notepad and save your changes when prompted.
     
     
• Windows XP
  1. Click Start, and then click Search.
  2. Click All files and folders.
  3. In the "All or part of the file name" box, type:
     
     hosts
     
     
  4. Verify that "Look in" is set to "Local Hard Drives" or to (C:).
  5. Click "More advanced options."
  6. Check "Search system folders."
  7. Check "Search subfolders."
  8. Click Search.
  9. Click Find Now or Search Now
  10. For each Hosts file that you find, right-click the file, and then click "Open With."
  11. Deselect the "Always use this program to open this program" check box.
  12. Scroll through the list of programs and double-click Notepad.
  13. When the file opens, delete all the entries in the Hosts file except for the following line:
      
      127.0.0.1     localhost
      
      Note: If this line does not exist, add it to the file.
      
  14. Close Notepad and save your changes when prompted.

Technical Details