Dialer.NewDial

SUMMARY

Behavior

Dialer.NewDial is a dialer program that can be used to access pornography by dialing a high-cost number using a modem.

Symptoms

The files are detected as Dialer.NewDial.

Transmission

The most common installation method of this dialer program is through various Web sites, mainly pornographic in nature.

Protection

• Virus Definitions (LiveUpdate™ Weekly) October 29, 2003
• Virus Definitions (Intelligent Updater) October 28, 2003

TECHNICAL DETAILS

When Dialer.NewDial runs, it does the following:

1. Creates the folder, %Windir%\_DlrApps.
   
   

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   Note: %Windir% is a variable. The dialer locates the Windows folder and creates the folder _DlrApps in that location. By default, this is C:Windows (Windows 95/98/Me/XP) or C:Winnt (Windows NT/2000).
   

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2. Copies itself as %Windir%\_DlrAppsigsex2x.exe.
   
   
3. Adds the value:
   
   "igsex2x"="%Windows%\_DlrAppsigsex2x.exe /astart..."
   
   to the registry key:
   
   HKEY_CURRENT_USERSOFTWAREMicrosoftWindowsCurrentVersionRun
   
   so that the dialer runs when you start Windows.
   
   
4. Creates a shortcut icon on the Windows Desktop and System Tray.
   
   
5. Adds %Windir%\_DlrAppsigsex2x.exe to the Start Menu and the Windows Favorites.
   
   
6. Runs the file, %Windir%\_DlrAppsigsex2x.exe. When this file runs, a dialog box similar to the following appears:
   
   
   
   
   

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 and delete all the files detected as Dialer.NewDial.
4. Delete the value that was added to the registry.
   

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

1. Updating 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. Scanning for and deleting the infected files

1. Start Norton AntiVirus and make sure that it is configured to scan all the files. For more information, read the document, "How to configure Norton AntiVirus to scan all files."
2. Run a full system scan.
3. If any files are detected as infected with Dialer.NewDial, click Delete.
4. Delete the subfolder _DlrApps in the %Windir% folder.

4. Deleting the values from the registry

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WARNING: 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.

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1. Click Start, and then click Run. (The Run dialog box appears.)
2. Type regedit
   
   Then click OK. (The Registry Editor opens.)
   
   
3. Navigate to the following key:
   
   HKEY_CURRENT_USERSOFTWAREMicrosoftWindowsCurrentVersionRun
   
   
4. In the right pane, delete the value:
   
   "igsex2x"="%Windows%\_DlrAppsigsex2x.exe /astart..."
   
   
5. Exit the Registry Editor.