1. Symantec/
  2. Security Response/
  3. W32.Lovgate.R@mm

W32.Lovgate.R@mm - Removal

Risk Level 2: Low

Discovered:
April 5, 2004
Updated:
February 13, 2007 12:20:51 PM
Also Known As:
W32/Lovgate.x@MM [McAfee], I-Worm.LovGate.w [Kaspersky]
Type:
Worm
Systems Affected:
Windows

Removal using the W32.HLLW.Lovgate Removal Tool
Symantec Security Response has developed a removal tool to clean the infections of W32.HLLW.Lovgate.R@mm. Try this removal tool first, as it is the easiest way to remove this threat.

Manual Removal
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
  1. Disable System Restore (Windows Me/XP).
  2. Update the virus definitions.
  3. Restart the computer in Safe mode or VGA mode.
  4. Reverse the changes made to the registry.
  5. Run a full system scan and delete all the files detected as W32.Lovgate.R@mm.
For details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:
For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

  • Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).

    The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.

3. To restart the computer in Safe mode or VGA mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode.
  • For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode."
  • For Windows NT 4 users, restart the computer in VGA mode.

4. To reverse the changes made to 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 keys only. Read the document, "How to make a backup of the Windows registry," for instructions.

  1. Click Start > Run.
  2. Type regedit

    Then click OK.

  3. Navigate to the key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the values:

    "Hardware Profile"="%System%\hxdef.exe
    "Microsoft NetMeeting Associates, Inc."="NetMeeting.exe"
    "Program in Windows"="%System%\IEXPLORE.EXE"
    "Protected Storage"="RUNDLL32.EXE MSSIGN30.DLL ondll_reg"
    "Shell Extension"="%System%\spollsv.exe"
    "VFW Encoder/Decoder Settings"="RUNDLL32.exe MSSIGN30.DLL ondll_reg"
    "WinHelp"="%System%\WinHelp.exe"


  5. Do one of the following:
    • If you use Windows 95/98/Me, proceed with step f.
    • If you use Windows NT/2000/XP, proceed with step g.

  6. Navigate to the key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\
    RunServices


    In the right pane, delete the value:

    "SystemTra"="%Windir%\Systra.exe"

    Then proceed with step h.

  7. Navigate to the key:

    HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\
    Windows


    In the right pane, delete the following value:

    "run"="RAYMOND.exe"

  8. Navigate to the key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

    In the left-hand pane, delete the key "_reg"

  9. Navigate to the key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

    In the left-hand pane, delete the key "Windows Management Protocol v.0(experimental)"

  10. Exit the Registry Editor.

5. To scan for and delete the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected as infected with W32.Lovgate.R@mm, click Delete.
  4. Restart the computer in Normal mode. For instructions, read the section on returning to Normal mode in the document, "How to start the computer in Safe Mode."



Writeup By: Yuhui Huang

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