Threat Explorer

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Dialer.WSV

Dialer.WSV

Updated:
13 February 2007
Risk Impact:
High
File Names:
tibs5.exe drexinit.dll [FILE NAME].exe
Systems Affected:
Windows

Behavior


When Dialer.WSV is executed, it installs itself and attempts to use the modem to dial a high-cost telephone number.

Symptoms


The files are detected as Dialer.WSV.

Behavior


There are reports that Web sites have installed this file.

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 18 March 2004
  • Latest Daily Certified version 07 May 2019 revision 008
  • Initial Weekly Certified release date 18 March 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Dialer.WSV is executed, it does the following:
  1. Drops a copy of itself to %ProgramFiles%\WebSiteViewer\[FILE NAME].exe.

    Notes:
    • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files.
    • [FILE NAME]: This is a six digit number representing the threat version.

  2. Attempts to download files from a predetermined Web site.

  3. Adds the following files:

    • %Windir%\drexinit.dll
    • %Windir%\cerbmod.dll
    • %System%\dload.exe
    • %SystemRoot%\misb.exe
    • %SystemRoot%\12*.exe
    • %ProgramFiles%\WebSiteViewer\[FILE NAME].exe
    • %ProgramFiles%\WebSiteViewer\[FILE NAME].ico
    • %ProgramFiles%\WebSiteViewer\[FILE NAME].dlr
    • %ProgramFiles%\WebSiteViewer\[FILE NAME].dd
    • %ProgramFiles%\WebSiteViewer\[FILE NAME].ban
    • %ProgramFiles%\WebSiteViewer\lDE.txt
    • %ProgramFiles%\WebSiteViewer\lPT.txt

      Notes:
    • %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
    • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows (Windows 95/98/Me/XP) or C:\Winnt (Windows NT/2000).

  4. Adds a .lnk file on the desktop and Start menu that links to a copy of the dialer executable, similar to the following:

    • %UserProfile%\Desktop\Best Sex.lnk
    • %UserProfile%\Start Menu\Best Sex.lnk
    • %UserProfile%\Desktop\kanpane.lnk
    • %UserProfile%\Start Menu\kanpane.lnk
    • %UserProfile%\Desktop\erotica-planet.lnk
    • %UserProfile%\Start Menu\erotica-planet.lnk
    • %UserProfile%\Desktop\a-sexgirls.lnk
    • %UserProfile%\Start Menu\a-sexgirls.lnk
    • %UserProfile%\Desktop\Free Pics.lnk
    • %UserProfile%\Start Menu\Free Pics.lnk
    • %UserProfile%\Desktop\XXX-files.lnk
    • %UserProfile%\Start Menu\XXX-files.lnk

      Note: %UserProfile% is a variable that refers to the current user's profile folder. By default, this is C:\Documents and Settings\[Current User] (Windows NT/2000/XP).

  5. May copy itself as %System%\tibs[RANDOM NUMBER].exe.

  6. Creates the following registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\WebSiteViewer
    HKEY_ALL_USERS\Software\WebSiteViewer
    HKEY_CLASSES_ROOT\CLSID\{C1C2AC28-5E4B-4228-B7A0-05E986FFCE14}
    HKEY_CLASSES_ROOT\CLSID\{A0269420-A638-4509-889C-8FC3CC85DA7E}
    HKEY_CLASSES_ROOT\CLSID\{C1C2AC28-5E4B-4228-B7A0-05E986FFCE13}
    HKEY_CLASSES_ROOT\CLSID\{25720328-5F2D-4B90-920C-2C244165CFF3}
    HKEY_CLASSES_ROOT\Interface\{5FF31463-6856-4604-BEE9-D84C92F60BA4}
    HKEY_CLASSES_ROOT\Interface\{DB767162-0D30-4181-9ED6-8019F6452FFF}
    HKEY_CLASSES_ROOT\Interface\{0B454D9A-29BB-4930-A0C7-C87F21F82882}
    HKEY_CLASSES_ROOT\TypeLib\{D88DA98D-48BA-4116-96AB-77C38EAE487F}
    HKEY_CLASSES_ROOT\TypeLib\{C4855F24-2FEE-4253-AF26-24D539508AB1}
    HKEY_CLASSES_ROOT\TypeLib\{9C1AB637-F5E9-4C5D-BD2F-0EB389905301}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    \Browser Helper Objects\{A0269420-A638-4509-889C-8FC3CC85DA7E}
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader.4
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader.1
    HKEY_CLASSES_ROOT\SBIT6LOADER.SBITPlugin
    HKEY_CLASSES_ROOT\SBIT6LOADER.SBITPlugin.1HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0F9561D0-03B2-44a3-89A6-E95E417CBA25}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{491BE5B7-A7F8-40EC-AAD4-CBA11FDFD814}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{29358AA6-679D-44EA-8A51-59A3C6E6F811}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    \Browser Helper Objects\{0F9561D0-03B2-44a3-89A6-E95E417CBA25}

  7. May add one of the values:

    "tibs[RANDOM NUMBER]" = "%System%\tibs[RANDOM NUMBER].exe"
    "Windows Service" = ""
    "lbs" = ""

    to the registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

    so that the risk runs every time Windows starts

  8. Adds the following sections to the RAS phonebook file, rasphone.pbk:

    [TIBS41]
    [TIBS42]
    [TIBS43]

  9. Attempts to contact a Web site and use the modem to dial a high cost phone number.

  10. Adds the following registry keys which can also be used by legitimate programs:

    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card0
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card1
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card10
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card11
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card12
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card13
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card14
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card15
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card16
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card17
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card18
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card19
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card2
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card20
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card21
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card22
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card3
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card4
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card5
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card6
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card7
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card8
    HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards\Card9
    HKEY_USERS\S-1-5-21-448539723-413027322-839522115-1003\Software\Microsoft\MessengerService\PassportBalloon
HKEY_USERS\S-1-5-21-448539723-413027322-839522115-1003\Software\Microsoft\MessengerService\PassportBalloon



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 any values added to the registry.
  5. Delete the entry that was added to the RAS phone-book 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.

  3. Open Windows Explorer.

  4. Navigate to and delete the following files

    • %ProgramFiles%\WebSiteViewer
    • %UserProfile%\Desktop\Best Sex.lnk
    • %UserProfile%\Start Menu\Best Sex.lnk
    • %UserProfile%\Desktop\kanpane.lnk
    • %UserProfile%\Start Menu\kanpane.lnk
    • %UserProfile%\Desktop\erotica-planet.lnk
    • %UserProfile%\Start Menu\erotica-planet.lnk
    • %UserProfile%\Desktop\a-sexgirls.lnk
    • %UserProfile%\Start Menu\a-sexgirls.lnk
    • %UserProfile%\Desktop\Free Pics.lnk
    • %UserProfile%\Start Menu\Free Pics.lnk
    • %UserProfile%\Desktop\XXX-files.lnk
    • %UserProfile%\Start Menu\XXX-files.lnk
    • %Windir%\cerbmod.dll
    • %SystemRoot%\misb.exe
    • %SystemRoot%\12*.exe

  5. Exit Windows Explorer.
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.

Warning messages may be displayed when the computer is restarted, since the risk may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [File path]
Message body: Windows cannot find [file name]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

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 and delete the subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\WebSiteViewer
    HKEY_ALL_USERS\Software\WebSiteViewer
    HKEY_CLASSES_ROOT\CLSID\{C1C2AC28-5E4B-4228-B7A0-05E986FFCE14}
    HKEY_CLASSES_ROOT\CLSID\{A0269420-A638-4509-889C-8FC3CC85DA7E}
    HKEY_CLASSES_ROOT\CLSID\{C1C2AC28-5E4B-4228-B7A0-05E986FFCE13}
    HKEY_CLASSES_ROOT\CLSID\{25720328-5F2D-4B90-920C-2C244165CFF3}
    HKEY_CLASSES_ROOT\Interface\{5FF31463-6856-4604-BEE9-D84C92F60BA4}
    HKEY_CLASSES_ROOT\Interface\{DB767162-0D30-4181-9ED6-8019F6452FFF}
    HKEY_CLASSES_ROOT\Interface\{0B454D9A-29BB-4930-A0C7-C87F21F82882}
    HKEY_CLASSES_ROOT\TypeLib\{D88DA98D-48BA-4116-96AB-77C38EAE487F}
    HKEY_CLASSES_ROOT\TypeLib\{C4855F24-2FEE-4253-AF26-24D539508AB1}
    HKEY_CLASSES_ROOT\TypeLib\{9C1AB637-F5E9-4C5D-BD2F-0EB389905301}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    \Browser Helper Objects\{A0269420-A638-4509-889C-8FC3CC85DA7E}
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader.4
    HKEY_CLASSES_ROOT\TIBSLoaderAXDLL.TIBSLoader.1
    HKEY_CLASSES_ROOT\SBIT6LOADER.SBITPlugin
    HKEY_CLASSES_ROOT\SBIT6LOADER.SBITPlugin.1HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0F9561D0-03B2-44a3-89A6-E95E417CBA25}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{491BE5B7-A7F8-40EC-AAD4-CBA11FDFD814}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{29358AA6-679D-44EA-8A51-59A3C6E6F811}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    \Browser Helper Objects\{0F9561D0-03B2-44a3-89A6-E95E417CBA25}

  4. Navigate to the subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

  5. In the right pane, delete the values if they exist:

    "tibs[RANDOM NUMBER]" = "%System%\tibs[RANDOM NUMBER].exe"
    "Windows Service" = ""
    "lbs" = ""

  6. Exit the Registry Editor.
    5. To delete the added entry from 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 sections:

        [TIBS41]
        [TIBS42]
        [TIBS43]

      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:

        [TIBS41]
        [TIBS42]
        [TIBS43]

      13. Close Notepad and save your changes when prompted.