Threat Explorer

The Threat Explorer is a comprehensive resource consumers can turn to for daily, accurate, up-to-date information on the latest threats, risks and vulnerabilities.

Dialer.MicroDialer

Dialer.MicroDialer

Updated:
13 February 2007
Risk Impact:
High
Systems Affected:
Windows

Behavior


Dialer.MicroDialer is a dialer program that modifies the Remote Access Server (RAS) phone-book. It attempts to establish a RAS connection and to use the modem to dial a predefined, high-cost phone number.

Symptoms


Your Symantec program detects Dialer.MicroDialer.

Behavior


This security risk can be manually installed or installed as a component of another program.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 07 May 2019 revision 006
  • Initial Daily Certified version 27 October 2005
  • Latest Daily Certified version 07 May 2019 revision 008
  • Initial Weekly Certified release date 02 November 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Dialer.MicroDialer is executed, it performs the following actions:
  1. Adds a new RAS phone-book entry named "gsa1113_Connection".

  2. Attempts to dial a predefined high-cost phone number and establish a RAS connection.

  3. Attemps to open the browser and show a predefined web site.


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. Delete the entries added to the RAS phonebook 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 as Dialer.MicroDialer, 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.


4. To delete the entries added to the RAS phonebook file

Note:
The location of the RAS phonebook 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, delete all the lines that are included in the section:

      [gsa1113_Connection]

    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:

      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, delete all the lines that are included in the sections:

      [gsa1113_Connection]

    13. Close Notepad and save your changes when prompted.