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Adware.Lop

Adware.Lop

Updated:
February 13, 2007
Publisher:
lop.com
Risk Impact:
High
Systems Affected:
Windows

Behavior


Adware.Lop adds its own toolbar and search button to Internet Explorer.

Symptoms


Your Symantec program detects Adware.Lop.

Behavior


This adware component must be manually installed, or installed as a component of another program.

Antivirus Protection Dates

  • Initial Rapid Release version October 02, 2014 revision 022
  • Latest Rapid Release version July 21, 2017 revision 017
  • Initial Daily Certified version September 29, 2003 revision 002
  • Latest Daily Certified version July 21, 2017 revision 007
  • Initial Weekly Certified release date October 01, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

When Adware.Lop is installed, it does the following:
  1. May create the file %UserProfile%\Application Data\[RANDOM CHARACTERS].dll.

    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. May create multiple copies of the following file:

    %ProgramFiles%\[RANDOM FOLDER NAME]\[RANDOM FILE NAME]


    Note:
    • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files.
    • [RANDOM FOLDER NAME] and [RANDOM FILE NAME] are composed of random English words, such as the following:

      • team pure
      • bolt date book
      • OozeBind
      • Hold way amok
      • KEEP AXIS

  3. Adds the .dll file as a Browser Helper Object in the registry.

  4. May create multiple copies of the following files:

    • %Windir%\[RANDOM FILE NAME].htm
    • %Windir%\[RANDOM FILE NAME].gif

      Note: %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

  5. May create the following files:

    • %Temp%\Delete.me\Xpp.idx
    • %Temp%\Delete.me\Tbt.idx

      Note: %Temp% is a variable that refers to the Windows temporary folder. By default, this is C:\Windows\TEMP (Windows 95/98/Me/XP) or C:\WINNT\Temp (Windows NT/2000).

  6. Adds a toolbar and search button to Internet Explorer.

  7. Adds one of the values:

    "(Default)" = "%ProgramFiles%\[RANDOM FOLDER NAME]\[RANDOM FILE NAME]"
    "(Default)" = "%UserProfile%\Application Data\[RANDOM CHARACTERS].dll"

    to one of the following registry subkeys:

    HKEY_CLASSES_ROOT\CLSID\[RANDOM CLSID]\InprocServer32
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\[RANDOM CLSID]\InprocServer32



The following instructions pertain to all Symantec antivirus products that support security risk detection.
  1. Update the definitions.
  2. Run a full system scan.
  3. 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 run the scan
  1. Start your Symantec antivirus program, and then run a full system scan. Record the names of the file detected.
  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.

  3. After the files are deleted, restart the computer and proceed with the next section.

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.

3. 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. Click Edit > Find.

  4. Enter the name of the files recorded in step 2a.

  5. Click Find Next.

    You may be redirected to one of the following subkeys:

    HKEY_CLASSES_ROOT\CLSID\[RANDOM CLSID]\InprocServer32
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\[RANDOM CLSID]\InprocServer32

    containing one of the values:

    "(Default)" = "%ProgramFiles%\[RANDOM FOLDER NAME]\[RANDOM FILE NAME]"
    "(Default)" = "%UserProfile%\Application Data\[RANDOM CHARACTERS].dll"

  6. Record the [RANDOM CLSID] in the above subkeys.

  7. In the right pane, delete any of the values:

    "(Default)" = "%ProgramFiles%\[RANDOM FOLDER NAME]\[RANDOM FILE NAME]"
    "(Default)" = "%UserProfile%\Application Data\[RANDOM CHARACTERS].dll"

  8. Click Edit > Find.

  9. Enter the [RANDOM CLSID] that was recorded in step 4f.

  10. Delete any subkeys found.

  11. Exit the Registry Editor