We checked up the file %APPDATA%\NTLDR.DLL and found it hazardous.
The file %APPDATA%\NTLDR.DLL must be deleted from the system immediately.
Kill the process %APPDATA%\NTLDR.DLL and remove %APPDATA%\NTLDR.DLL from the Windows startup.

%APPDATA%\NTLDR.DLL Information and Removal:
NTLDR.DLL is known as: Trojan-PSW.Generic [PCTools] Trojan-Spy.Win32.KeyLogger.ijt [Kaspersky Lab] Mal/Behav-053 [Sophos] VirTool:Win32/Keylogger.A [Microsoft] Virus.Win32.Keylogger [Ikarus] Win-Trojan/Keylogger.150016.E [AhnLab].
MD5 of NTLDR.DLL = ED63F35721EE66BF6B206BEFC94C91C7
NTLDR.DLL size is 150016 bytes.
Full path on a computer: %APPDATA%\NTLDR.DLL
Related Files:
%APPDATA%\MICROSOFT\INSTALLER.EXE
%APPDATA%\JUNGHEINRICH.EXE
%APPDATA%\NTLDR.DLL
%APPDATA%\PAGEFILE.SYS
%APPDATA%\RUNDLL.EXE