Spyware.Perez

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Updated: February 13, 2007 11:43:37 AM
Type: Spyware
Version: N/A
Publisher: Perezzz Software
Risk Impact: High
File Names: toolbar.exe sys405.exe IESearchToolbar.dll
Systems Affected: Windows

Behavior


Spyware.Perez is a search hijacker that is installed as a Browser Helper Object Toolbar in Microsoft Internet Explorer. Certain address bar searches and unknown domain name searches will be redirected to the program's controlling servers.

Symptoms


Your Symantec product detects the files as Spyware.Perez.

Transmission


Spyware.Perez must be manually installed.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version April 27, 2018 revision 037
  • Initial Daily Certified version April 27, 2005
  • Latest Daily Certified version April 28, 2018 revision 001
  • Initial Weekly Certified release date April 27, 2005

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Updated: February 13, 2007 11:43:37 AM
Type: Spyware
Version: N/A
Publisher: Perezzz Software
Risk Impact: High
File Names: toolbar.exe sys405.exe IESearchToolbar.dll
Systems Affected: Windows


When Spyware.Perez is installed, it performs the following actions:

  1. Creates the following files:

    • %ProgramFiles%\IESearchToolbar\IESearchToolbar.dll
    • %ProgramFiles%\IESearchToolbar\IESearchToolbar.dat
    • %ProgramFiles%\IESearchToolbar\auto.ico
    • %ProgramFiles%\IESearchToolbar\computers.ico
    • %ProgramFiles%\IESearchToolbar\games.ico
    • %ProgramFiles%\IESearchToolbar\heart.ico
    • %ProgramFiles%\IESearchToolbar\medicine.ico
    • %ProgramFiles%\IESearchToolbar\search.ico
    • %ProgramFiles%\IESearchToolbar\security.ico
    • %ProgramFiles%\IESearchToolbar\iesearchtoolbar_uninstall.exe

      Notes: %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files.

  2. Creates the following registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    \{2C5175A2-ADF3-4F57-AB70-BA90FD60A383}
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    \{EB381422-F797-4A98-A266-9DC490821907}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
    \CurrentVersion\Explorer\Browser Helper Objects
    \{2C5175A2-ADF3-4F57-AB70-BA90FD60A383}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
    \CurrentVersion\Uninstall\{69753829-779C-45e7-9D8C-C79CE0989246}
    HKEY_LOCAL_MACHINE\SOFTWARE\Perezzz Software\IESearchToolbar

  3. Adds the value:

    "{EB381422-F797-4A98-A266-9DC490821907}" = "IE Search Toolbar"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar

  4. Adds the values:

    "Search Bar" = "[Web site on the daosearch.com domain]"
    "Start Page" = "[Web site on the daosearch.com domain]"
    "Use Custom Search URL" = "1"

    to the registry subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main

    to modify settings in Internet Explorer.

  5. Adds a search toolbar to Internet Explorer. The toolbar displays the following buttons and redirects searches to the daosearch.com domain:

    • Search Web
    • Adult XXX
    • Games
    • Medicine
    • Privacy
    • Computers
    • Automotive



Updated: February 13, 2007 11:43:37 AM
Type: Spyware
Version: N/A
Publisher: Perezzz Software
Risk Impact: High
File Names: toolbar.exe sys405.exe IESearchToolbar.dll
Systems Affected: Windows


The following instructions pertain to all Symantec antivirus products that support security risk detection.

    1. Update the definitions.
    2. Uninstall Spyware.Perez using the Add/Remove Programs utility.
    3. Run a full system scan.
    4. Delete any values added to the registry.
    5. Reset the Internet Explorer home page.
    6. Reset the Internet Explorer Search 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 uninstall the Adware
    1. Do one of the following:
      1. On the Windows 98 taskbar:
        1. Click Start > Settings > Control Panel.
        2. In the Control Panel window, double-click Add/Remove Programs.

      2. On the Windows Me taskbar:
        1. Click Start > Settings > Control Panel.
        2. In the Control Panel window, double-click Add/Remove Programs.
          If you do not see the Add/Remove Programs icon, click "...view all Control Panel options."

      3. On the Windows 2000 taskbar:
        By default, Windows 2000 is set up the same as Windows 98, so follow the instructions for Windows 98. If otherwise, click Start, point to Settings > Control Panel, and then click Add/Remove Programs.

      4. On the Windows XP taskbar:
        1. Click Start > Control Panel.
        2. In the Control Panel window, double-click Add or Remove Programs.

    2. Click IE Search Toolbar plugin


      Note:
      You may need to use the scroll bar to view the whole list.

    3. Click Add/Remove, Change/Remove, or Remove (this varies with the operating system). Follow the prompts.


    3. To run the scan
    1. Start your Symantec antivirus program, and then run a full system scan.

      Note: If you ran the Add/Remove programs applet as described in the previous section, all the files may have been removed, and thus none of them will be detected.
    2. If any files are detected as Spyware.Perez 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.

    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.

      Note:
      If you ran the Add/Remove programs applet as described in the above section, all the registry keys may have been removed, and thus none of them will be located.
    1. Click Start > Run.
    2. Type regedit

      Then click OK.
    3. Navigate to and delete the following registry subkeys:

      HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
      \{2C5175A2-ADF3-4F57-AB70-BA90FD60A383}
      HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
      \{EB381422-F797-4A98-A266-9DC490821907}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
      \CurrentVersion\Explorer\Browser Helper Objects
      \{2C5175A2-ADF3-4F57-AB70-BA90FD60A383}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
      \CurrentVersion\Uninstall\{69753829-779C-45e7-9D8C-C79CE0989246}
      HKEY_LOCAL_MACHINE\SOFTWARE\Perezzz Software\IESearchToolbar

    4. Navigate to the subkey:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar

    5. In the right pane, delete the value:

      "{EB381422-F797-4A98-A266-9DC490821907}" = "IE Search Toolbar"

    6. Exit the Registry Editor.

    5. 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 .

      6. To reset the Internet Explorer Search page
      Follow the instructions for your version of Windows.

      Windows 98/Me/2000
      1. Start Microsoft Internet Explorer.
      2. Click the Search button on the toolbar.
      3. In the Search pane, click Customize.
      4. Click Reset.
      5. Click Autosearch Settings.
      6. Select a search site from the drop-down list, and then click OK.
      7. Click OK.

      Windows XP
      Because Windows XP is set by default to use animated characters in the search, how you do this can vary. Read all the instructions before you start.
      1. Start Microsoft Internet Explorer.
      2. Click the Search button on the toolbar.
      3. Do one of the following:
        • If the pane that opens looks similar to the following picture, click the word Customize and proceed to step h:




        • If the pane that opens has the words "Search Companion" at the top, and the center looks similar to the following picture, click the Change preferences link and proceed with step d.




      4. Click the Change Internet search behavior link.
      5. Under "Internet Search Behavior," click With Classic Internet Search.
      6. Click OK. Then close Internet Explorer. (Close the program for the change to take effect.)
      7. Start Internet Explorer. When the search pane opens, it should look similar to the following picture:





        Click the word Customize, and then proceed with the next step.

      8. In the Search pane, click Customize.
      9. Click Reset.
      10. Click Autosearch Settings.
      11. Select a search site from the drop-down list, and then click OK.
      12. Click OK.
      13. Do one of the following:
        • If you were using (or want to continue using) the "Classic Internet Search" panel, stop here (or proceed with the next section).
        • If you want to go back to the "Search Companion" search (it usually has an animated character at the button), proceed with step n.

      14. Click the word Customize again.
      15. In the "Customize Search Settings" window, click Use Search Companion > OK.
      16. Close Internet Explorer. The next time you open it, it will again use the Search Companion.