Dialer.Greencard

Dialer.Greencard

Updated:
13 February 2007
Risk Impact:
High
File Names:
usa.exe,visa.exe,visa.sis,win.com,LINK1.sis,LINK2.sis,LINK3.sis,LINK4.sis
Systems Affected:
Windows

Behavior


Dialer.Greencard is a dialer program that can be used to access various Web sites by dialing a high-cost phone number using the modem.

Symptoms


The files are detected as Dialer.Greencard.

Behavior


This dialer must be manually installed.

Antivirus Protection Dates

  • Initial Rapid Release version 02 October 2014 revision 022
  • Latest Rapid Release version 01 February 2015 revision 020
  • Initial Daily Certified version 09 March 2004
  • Latest Daily Certified version 28 September 2010 revision 036
  • Initial Weekly Certified release date 10 March 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Dialer.Greencard is executed, it performs the following actions:
  1. Creates the following files in the %Program Files% folder:
    • visa.exe
    • link1.exe
    • link2.exe
    • link3.exe
    • link4.exe

  2. Adds the value:

    "windows"="%Program Files%\visa.exe"

    to the registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\CurrentVersion\Run

  3. Adds the value:

    "StartPage"="http://www.link.net"

    to the registry key:

    HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Start Page

  4. Creates the files:
    • C:\docume~1\alluse~1\applic~1\microd~1\network\connec~1\pbk\rasphone.pbk
    • D:\docume~1\alluse~1\applic~1\microd~1\network\connec~1\pbk\rasphone.pbk
    • E:\docume~1\alluse~1\applic~1\microd~1\network\connec~1\pbk\rasphone.pbk

      which contain information that will cause the computer to dial a specified number to access the Internet.


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 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 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
    Start your Symantec antivirus program, and then run a full system scan.

    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.

    • 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.

4. 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 .
  1. Click Start > Run.
  2. Type regedit

    Then click OK.

    Note: If the registry editor fails to open the risk may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.
  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the value:

    "windows"="%program files%\visa.exe"

  5. Exit the Registry Editor.