Tuesday, June 22, 2010

How to Manually Clean the Navidad Trojan

Click on Start,
Find, Files or Folders
Search for REGEDIT.EXE
Rename REGEDIT.EXE to REGEDIT.COM
Run REGEDIT.COM
In the left panel of the Registry Editor, click on
the "+" at left of the names to go to the registry below:
HKEY_CLASSES_ROOT\exefile\shell\open\command
In the right panel, double-click on the entry with
the data(Default) = "%systemdir%\WINSVRC.EXE"%1""%*"
where %systemdir% is the Windows system directory; e.g.,
\WINDOWS\SYSTEM for Win 9x, and \WINNT\SYSTEM32 for NT/2K.
In the Edit window that appears, delete the entire
first part of the string, leaving behind "%1"%*"
As in step 5, go to the registry entry below:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
Click on the entry below, then press "DELETE"
Win32BaseServiceMOD = %systemdir%\WINSVRC.EXE
Go to the registry entry below:
HKEY_CURRENT_USER\Software\Navidad
Delete this key
Reboot your system
Scan your system with an up-to-date virus scanner
Rename REGEDIT.COM back to REGEDIT.EXE

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