Threat Explorer

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Adware.LookNSearch

Adware.LookNSearch

Updated:
February 13, 2007
Risk Impact:
High
File Names:
Iesearch.exe
Systems Affected:
Windows

Behavior


Adware.LookNSearch is an Internet Explorer browser plug-in that downloads programs and advertisements.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version February 01, 2015 revision 020
  • Initial Daily Certified version May 12, 2004
  • Latest Daily Certified version January 26, 2015 revision 023
  • Initial Weekly Certified release date May 12, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.LookNSearch is executed, it performs the following actions:
  1. Drops the following .dll files in %System% and %ProgramFiles%\Internet Explorer:
    • guardian.dll
    • hookDLL.,dll
    • netClient.dll
    • r_process.dll


      Notes:
    • %System% is a variable. The adware locates the System folder and copies itself to that location. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
    • %ProgramFiles% is a variable that refers to the path to the program files folder. By default, this is C:\Program Files.

  2. It adds the entry

    "Iesearch.exe"="%ProgramFiles%\Internet Explorer\Iesearch.exe"

    to the registry key

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

    so that it runs when you start Windows.

  3. May make outgoing HTTP connections to download software or advertisements.



The following instructions pertain to all Symantec antivirus products that support Security Risk detection.
  1. Update the definitions.
  2. Run a full system scan and delete all the files detected as Adware.LookNSearch.
  3. Delete the value that was 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 scan for and delete the files
  1. Start your Symantec antivirus program, and then run a full system scan.
  2. If any files are detected as Adware.LookNSearch, click Delete.


    Note: If your Symantec antivirus product reports that it cannot delete a detected file, write down the path and file name. Then use Windows Explorer to locate and delete the file.

3. To delete the value from the registry

WARNING: 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 keys only. Read the document, "How to make a backup of the Windows registry ," for instructions.
  1. Click Start, and then click Run. (The Run dialog box appears.)
  2. Type regedit

    Then click OK. (The Registry Editor opens.)

  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the value:

    "Iesearch.exe"="%ProgramFiles%\Internet Explorer\Iesearch.exe"

  5. Exit the Registry Editor.