Threat Explorer

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Adware.FlashEnhancer

Adware.FlashEnhancer

Updated:
February 13, 2007
Publisher:
flashtrack.net
Risk Impact:
High
File Names:
XML.dll,Xcpy1_inst.exe,xclean.exe,flnclean.exe. flaclean.exe,Uninst.exe,flncpy.exe,ftkcpy.exe,ftk.dl
Systems Affected:
Windows

Behavior


Adware.FlashEnhancer is an adware program that downloads and displays advertisements. It works as a Browser Helper Object in Internet Explorer.

Note: Detections dated 28th July 2005 or earlier may detect this adware as Adware.FlashTrack or Adware.FlashTrack.B.

Symptoms


The files are detected as Adware.FlashEnhancer

Behavior


The most common installation method for this program is through Web sites. This risk may also come bundled with other security risks.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version June 21, 2017 revision 001
  • Initial Daily Certified version August 19, 2004
  • Latest Daily Certified version June 21, 2017 revision 008
  • Initial Weekly Certified release date August 25, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.FlashEnhancer is running, it may display pop-up advertisements whose content is based on keywords found in the Web page that is being visited.

Adware.FlashEnhancer runs as a Browser Helper Object, which means that the adware component will receive information regarding all the actions inside Internet Explorer. Browser Helper Objects require Internet Explorer 4 or later to function.

When Adware.FlashEnhancer is installed, it does the following:
  1. Creates the following files:

    • %CommonProgramFiles%\Java\flnclean.exe
    • %CommonProgramFiles%\Java\flncpy.exe
    • %CommonProgramFiles%\Java\ftkclean.exe
    • %CommonProgramFiles%\Java\ftkcpy.cfg
    • %CommonProgramFiles%\Java\ftkcpy.exe
    • %Windir%\Temp\ft30s.exe

      Note:
    • %CommonProgramFiles% is a variable that refers to the Common Files folder. By default, this is C:\Program Files\Common Files.
    • %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).

  2. Installs itself to one of the following folders:

    • %ProgramFiles%\Xml\*.*
    • %ProgramFiles%\Fen\*.*
    • %ProgramFiles%\Fla\*.*
    • %ProgramFiles%\Flcp\*.*
    • %ProgramFiles%\Flen\*.*
    • %ProgramFiles%\Fln\*.*
    • %ProgramFiles%\Flt\*.*
    • %ProgramFiles%\Ftk\*.*
    • %ProgramFiles%\Reg2\*.*
    • %ProgramFiles%\Xmod\*.*

      Note:
    • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files.
    • The filenames the risk uses in each folder varies depending on the name of the folder being used.

  3. Creates the following registry subkeys and adds a number of values under these subkeys:


    HKEY_CLASSES_ROOT\CLSID\{5EDB03AF-0341-4e96-9E9B-3171522E4BAF}
    HKEY_CLASSES_ROOT\CLSID\{63CF97E8-4133-438a-A831-CC9C6D47D673}
    HKEY_CLASSES_ROOT\CLSID\{665ACD90-4541-4836-9FE4-062386BB8F05}
    HKEY_CLASSES_ROOT\CLSID\{7371F073-AC0F-4b80-BB2F-96A488CEFB32}
    HKEY_CLASSES_ROOT\CLSID\{7CD20E91-1F31-41da-8379-479EA31DF969}
    HKEY_CLASSES_ROOT\CLSID\{A749B4BC-7621-4a80-9220-D0A283367DD5}
    HKEY_CLASSES_ROOT\CLSID\{D7E588AB-A5D9-4422-B313-22A3470F9700}
    HKEY_CLASSES_ROOT\Interface\{06542764-7BB2-412B-80D6-D103D1474C93}
    HKEY_CLASSES_ROOT\Interface\{28168CCE-5310-4F12-AB58-9DA99A55AAEB}
    HKEY_CLASSES_ROOT\Interface\{6E83AE1C-F69C-4AED-AF98-D23C24C6FA4B}
    HKEY_CLASSES_ROOT\Interface\{890089B7-B385-442F-97B6-99060E8BD08F}
    HKEY_CLASSES_ROOT\Interface\{BAEF4039-3C02-4C9E-A2F4-87B513AB0E87}
    HKEY_CLASSES_ROOT\TypeLib\{1BD49631-AE36-42F4-A37B-CA7F53146821}
    HKEY_CLASSES_ROOT\TypeLib\{48E832EC-B061-49E2-BBC1-AC818623B742}
    HKEY_CLASSES_ROOT\TypeLib\{7955EA20-E0D6-4A77-88B6-120674D979EA}
    HKEY_CLASSES_ROOT\TypeLib\{DB9F4C00-65E8-4FA1-917B-E4844DDF5909}
    HKEY_CLASSES_ROOT\TypeLib\{E6C71E83-E02B-4BC4-958D-A9194916EC19}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0AD937E7-2F37-4873-A05E-548A67EF1D0E}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{5EDB03AF-0341-4e96-9E9B-3171522E4BAF}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{63CF97E8-4133-438a-A831-CC9C6D47D673}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{665ACD90-4541-4836-9FE4-062386BB8F05}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7371F073-AC0F-4b80-BB2F-96A488CEFB32}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7CD20E91-1F31-41da-8379-479EA31DF969}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A749B4BC-7621-4a80-9220-D0A283367DD5}
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D7E588AB-A5D9-4422-B313-22A3470F9700}
    HKEY_CLASSES_ROOT\BRedObj.BRedObj
    HKEY_CLASSES_ROOT\BRedObj.BRedObj.1
    HKEY_CLASSES_ROOT\UnawareObj.UnawareObj
    HKEY_CLASSES_ROOT\UnawareObj.UnawareObj.1
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Reg2
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Fla
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Xmod
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ftk
    HKEY_LOCAL_MACHINE\Software\Netfilter
    HKEY_LOCAL_MACHINE\Software\Xmod
    HKEY_LOCAL_MACHINE\Software\XML
    HKEY_LOCAL_MACHINE\Software\Persistent Bytes
    HKEY_LOCAL_MACHINE\SOFTWARE\FEN
    HKEY_LOCAL_MACHINE\SOFTWARE\Flen
    HKEY_LOCAL_MACHINE\SOFTWARE\Flt
    HKEY_LOCAL_MACHINE\SOFTWARE\Fln
    HKEY_LOCAL_MACHINE\SOFTWARE\Ftk
    HKEY_LOCAL_MACHINE\SOFTWARE\Fla
    HKEY_LOCAL_MACHINE\SOFTWARE\Flcp
    HKEY_USERS\S-1-5-21-1187800756-1387622775-1527857685-500\Software\Microsoft
    \Windows\CurrentVersion\Ext\Stats\{63CF97E8-4133-438A-A831-CC9C6D47D673}
    HKEY_USERS\S-1-5-21-1187800756-1387622775-1527857685-500\Software\Microsoft
    \Windows\CurrentVersion\Ext\Stats\{7371F073-AC0F-4B80-BB2F-96A488CEFB32}

  4. Adds the values:

    "FlnCPY" = "[PATH TO ORIGINAL FILE]"
    "FlaCPY" = "[PATH TO ORIGINAL FILE]"
    "Jreg" = "[PATH TO ORIGINAL FILE]"
    "t" = "[PATH TO ORIGINAL FILE]"
    "fecpy" = "[PATH TO ORIGINAL FILE]"
    "flencpy" = "[PATH TO ORIGINAL FILE]"
    "flnCPY" = "[PATH TO ORIGINAL FILE]"
    "ftkCPY" = "[PATH TO ORIGINAL FILE]"
    "Xcpy1" = "[PATH TO ORIGINAL FILE]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    so that the risk runs every time Windows starts.

  5. Adds the values:

    "fln" = "[PATH TO ORIGINAL FILE]"
    "f" = "[PATH TO ORIGINAL FILE]"
    "t" = "[PATH TO ORIGINAL FILE]"
    "fla" = "[PATH TO ORIGINAL FILE]"
    "fln" = "[PATH TO ORIGINAL FILE]"
    "ftk" = "[PATH TO ORIGINAL FILE]"

    to the registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce

    so that the risk runs every time Windows starts.

  6. May contact [http:/ /]ads.flashtrack.net/[REMOVED] and display pop-up advertisements with content based on keywords found on the Web page that is being visited.



The following instructions pertain to all Symantec antivirus products that support security risk detection.
  1. Update the definitions.
  2. Unregister the xml.dll file.
  3. Run a full system scan.
  4. Delete any 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 unregister the xml.dll file
  1. Click Start > Run.
  2. Type, or copy and paste, the following text:

    regsvr32 /u "[path to xml.dll]\XML.dll"

    then click OK.

  3. If a dialog box confirming this action appears, click OK.

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 if they exist:

    • %CommonProgramFiles%\Java\flnclean.exe
    • %CommonProgramFiles%\Java\flncpy.exe
    • %CommonProgramFiles%\Java\ftkclean.exe
    • %CommonProgramFiles%\Java\ftkcpy.cfg
    • %CommonProgramFiles%\Java\ftkcpy.exe
    • %Windir%\Temp\ft30s.exe

  5. Navigate to and delete the following folders if they exist:

    • %ProgramFiles%\Xml
    • %ProgramFiles%\Fen
    • %ProgramFiles%\Fla
    • %ProgramFiles%\Flcp
    • %ProgramFiles%\Flen
    • %ProgramFiles%\Fln
    • %ProgramFiles%\Flt
    • %ProgramFiles%\Ftk
    • %ProgramFiles%\Reg2
    • %ProgramFiles%\Xmod

  6. 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 the subkey:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    4. In the right pane, delete the values:

      "FlnCPY" = "[PATH TO ORIGINAL FILE]"
      "FlaCPY" = "[PATH TO ORIGINAL FILE]"
      "Jreg" = "[PATH TO ORIGINAL FILE]"
      "t" = "[PATH TO ORIGINAL FILE]"
      "fecpy" = "[PATH TO ORIGINAL FILE]"
      "flencpy" = "[PATH TO ORIGINAL FILE]"
      "flnCPY" = "[PATH TO ORIGINAL FILE]"
      "ftkCPY" = "[PATH TO ORIGINAL FILE]"
      "Xcpy1" = "[PATH TO ORIGINAL FILE]"

    5. Navigate to the subkey:

      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce

    6. In the right pane, delete the values:

      "fln" = "[PATH TO ORIGINAL FILE]"
      "f" = "[PATH TO ORIGINAL FILE]"
      "t" = "[PATH TO ORIGINAL FILE]"
      "fla" = "[PATH TO ORIGINAL FILE]"
      "fln" = "[PATH TO ORIGINAL FILE]"
      "ftk" = "[PATH TO ORIGINAL FILE]"

    7. Navigate to and delete the subkeys:

      HKEY_CLASSES_ROOT\CLSID\{5EDB03AF-0341-4e96-9E9B-3171522E4BAF}
      HKEY_CLASSES_ROOT\CLSID\{63CF97E8-4133-438a-A831-CC9C6D47D673}
      HKEY_CLASSES_ROOT\CLSID\{665ACD90-4541-4836-9FE4-062386BB8F05}
      HKEY_CLASSES_ROOT\CLSID\{7371F073-AC0F-4b80-BB2F-96A488CEFB32}
      HKEY_CLASSES_ROOT\CLSID\{7CD20E91-1F31-41da-8379-479EA31DF969}
      HKEY_CLASSES_ROOT\CLSID\{A749B4BC-7621-4a80-9220-D0A283367DD5}
      HKEY_CLASSES_ROOT\CLSID\{D7E588AB-A5D9-4422-B313-22A3470F9700}
      HKEY_CLASSES_ROOT\Interface\{06542764-7BB2-412B-80D6-D103D1474C93}
      HKEY_CLASSES_ROOT\Interface\{28168CCE-5310-4F12-AB58-9DA99A55AAEB}
      HKEY_CLASSES_ROOT\Interface\{6E83AE1C-F69C-4AED-AF98-D23C24C6FA4B}
      HKEY_CLASSES_ROOT\Interface\{890089B7-B385-442F-97B6-99060E8BD08F}
      HKEY_CLASSES_ROOT\Interface\{BAEF4039-3C02-4C9E-A2F4-87B513AB0E87}
      HKEY_CLASSES_ROOT\TypeLib\{1BD49631-AE36-42F4-A37B-CA7F53146821}
      HKEY_CLASSES_ROOT\TypeLib\{48E832EC-B061-49E2-BBC1-AC818623B742}
      HKEY_CLASSES_ROOT\TypeLib\{7955EA20-E0D6-4A77-88B6-120674D979EA}
      HKEY_CLASSES_ROOT\TypeLib\{DB9F4C00-65E8-4FA1-917B-E4844DDF5909}
      HKEY_CLASSES_ROOT\TypeLib\{E6C71E83-E02B-4BC4-958D-A9194916EC19}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0AD937E7-2F37-4873-A05E-548A67EF1D0E}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{5EDB03AF-0341-4e96-9E9B-3171522E4BAF}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{63CF97E8-4133-438a-A831-CC9C6D47D673}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{665ACD90-4541-4836-9FE4-062386BB8F05}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7371F073-AC0F-4b80-BB2F-96A488CEFB32}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7CD20E91-1F31-41da-8379-479EA31DF969}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A749B4BC-7621-4a80-9220-D0A283367DD5}
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{D7E588AB-A5D9-4422-B313-22A3470F9700}
      HKEY_USERS\S-1-5-21-1187800756-1387622775-1527857685-500\Software\Microsoft
      \Windows\CurrentVersion\Ext\Stats\{63CF97E8-4133-438A-A831-CC9C6D47D673}
      HKEY_USERS\S-1-5-21-1187800756-1387622775-1527857685-500\Software\Microsoft
      \Windows\CurrentVersion\Ext\Stats\{7371F073-AC0F-4B80-BB2F-96A488CEFB32}
      HKEY_CLASSES_ROOT\BRedObj.BRedObj
      HKEY_CLASSES_ROOT\BRedObj.BRedObj.1
      HKEY_CLASSES_ROOT\UnawareObj.UnawareObj
      HKEY_CLASSES_ROOT\UnawareObj.UnawareObj.1
      HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Reg2
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Fla
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Xmod
      HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ftk
      HKEY_LOCAL_MACHINE\Software\Netfilter
      HKEY_LOCAL_MACHINE\Software\Xmod
      HKEY_LOCAL_MACHINE\Software\XML
      HKEY_LOCAL_MACHINE\Software\Persistent Bytes
      HKEY_LOCAL_MACHINE\SOFTWARE\FEN
      HKEY_LOCAL_MACHINE\SOFTWARE\Flen
      HKEY_LOCAL_MACHINE\SOFTWARE\Flt
      HKEY_LOCAL_MACHINE\SOFTWARE\Fln
      HKEY_LOCAL_MACHINE\SOFTWARE\Ftk
      HKEY_LOCAL_MACHINE\SOFTWARE\Fla
      HKEY_LOCAL_MACHINE\SOFTWARE\Flcp

    8. Exit the Registry Editor.