Threat Explorer

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Dialer.BaciamiStupido

Dialer.BaciamiStupido

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

Behavior


Dialer.BaciamiStupido is a dialer program that accesses a Web site by dialing a high-cost number using the modem.

Symptoms


One or more files are detected as Dialer.BaciamiStupido.
  • The Internet Explorer home page is reset to www.popup-freesex-adv.biz.

Behavior


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

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 25 December 2005
  • Latest Daily Certified version 07 May 2019 revision 008
  • Initial Weekly Certified release date 28 December 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Dialer.BaciamiStupido is executed, it performs the following actions:
  1. Copies itself as:

    • %UserProfile%\Start Menu\[ORIGINAL FILE NAME]
    • %UserProfile%\[ORIGINAL FILE NAME]

      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).

  2. Adds the value:

    "*" = "2"

    to the registry subkeys:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\super-videochat-community.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\nanobyte.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\umts-gprs-mondo-telefonino-cellulare.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\baciamistupido.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\popup-freesex-adv.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\ricercadoppia.com\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\roserosse.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\terzodesiderio.biz\www

  3. Adds the values:

    "1001" = "0"
    "1004" = "0"
    "1200" = "0"
    "1201" = "0"
    "1400" = "0"
    "1402" = "0"
    "1405" = "0"
    "1406" = "0"
    "1407" = "0"
    "1609" = "1"
    "1800" = "0"
    "1803" = "0"
    "CurrentLevel" = "0"
    "MinLevel" = "0"
    "RecommendedLevel" = "0"

    to the registry subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2

  4. Changes the Internet Explorer home page to www.popup-freesex-adv.biz.

  5. Creates the following phone book:

    %System%\_PHB1

    Note: %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).

  6. Makes an outgoing connection to the following server by dialing a high-cost number using the modem:

    www.baciamistupido.biz/[REMOVED]

  7. Downloads the following files, if the user opens Internet Explorer:

    %System%\ciakaisen.exe
    %System%\smallActive.dll

  8. Adds the following value:

    "ciakaisen.exe" = "%System%\ciakaisen.exe"

    to the registry subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

  9. Adds the following values:

    "%System%\ciakaisen.exe" = "1"
    "%System%\smallActive.dll" = "1"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs

  10. Creates the following registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\
    {9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_CLASSES_ROOT\CLSID\{9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\
    {8DAB5C8C-C784-4651-84F7-B6C9F4EEC53D}
    HKEY_CLASSES_ROOT\TypeLib\{8DAB5C8C-C784-4651-84F7-B6C9F4EEC53D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ActiveXCOM.myActiveXCOM
    HKEY_CLASSES_ROOT\ActiveXCOM.myActiveXCOM
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database\
    Distribution Units\{9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    ModuleUsage\%System%/ciakaisen.exe
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    ModuleUsage\%System%/smallActive.dll
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\
    {9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_CURRENT_USER\Software\ADWhere Component

  11. Attempts to download other security risks and the latest version of itself.



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. Reset the Internet security zone settings.
  6. Reset the Internet Explorer home page.
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.

    • 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.

Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do 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 following registry subkeys:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\super-videochat-community.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\nanobyte.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\umts-gprs-mondo-telefonino-cellulare.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\baciamistupido.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\popup-freesex-adv.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\ricercadoppia.com\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\roserosse.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\terzodesiderio.biz\www
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\terzodesiderio.biz\www
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\
    {9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_CLASSES_ROOT\CLSID\{9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\
    {8DAB5C8C-C784-4651-84F7-B6C9F4EEC53D}
    HKEY_CLASSES_ROOT\TypeLib\{8DAB5C8C-C784-4651-84F7-B6C9F4EEC53D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ActiveXCOM.myActiveXCOM
    HKEY_CLASSES_ROOT\ActiveXCOM.myActiveXCOM
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database\
    Distribution Units\{9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    ModuleUsage\%System%/ciakaisen.exe
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    ModuleUsage\%System%/smallActive.dll
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\
    {9F5BB9E1-31AE-4A13-8734-15CED0F60A3D}
    HKEY_CURRENT_USER\Software\ADWhere Component

  4. Navigate to the subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

  5. In the right pane, delete the value:

    "ciakaisen.exe" = "%System%ciakaisen.exe"

  6. Navigate to the subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs

  7. In the right pane, delete the values:

    "%System%\ciakaisen.exe" = "1"
    "%System%\smallActive.dll" = "1"

  8. Exit the Registry Editor.


5. To reset the Internet security zone settings
  1. Open Microsoft Internet Explorer.
  2. Click Tools > Internet Options.
  3. Click the Security tab.
  4. Click the Internet Icon.
  5. Click Default Level.
  6. Click the Local Intranet Icon.
  7. Click Sites.
  8. Remove any Web sites from the list that you do not recognize or do not trust.
  9. Click Default Level.
  10. Click the Trusted sites Icon.
  11. Click on Sites.
  12. Remove any Web sites from the list that you do not recognize or do not trust.
  13. Click Default Level.
  14. Click the Restricted sites Icon.
  15. Click on Sites.
  16. Remove any Web sites from the list that you want to have access to.
  17. Click Default Level on lower right corner of the window.
  18. Click OK on lower right corner of the window.

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 .