Detailed Information, Enigmatrix:->
Services.exe:
This is the Services Control Manager, which is responsible for running, ending, and interacting with system services.
The services.exe file is located in the C:\Windows\System32 folder. In other cases, services.exe is a virus, spyware, trojan or worm! The viruses or trojans associated are:
W32/Leave.B (service.exe)
W32.Randex.R (service.exe)
W32.HLLW.Kazping (service.exe)
W32.XTC.Worm (service.exe)
Lsass.exe:-
1) (From Wikipedia, the free encyclopedia)
Local Security Authority Subsystem Service (LSASS), is a process in Microsoft Windows operating systems that verifies the user logging on to a Windows computer or server.
2) lsass.exe is a system process of the Microsoft Windows security mechanisms. It specifically deals with local security and login policies. This program is important for the stable and secure running of your computer and should not be terminated.
lsass.exe is a process which also relates to trojan and worm security threats spread via e-mails and peer-to-peer sharing networks such as Kazaa. The trojans allows attackers to access your computer from remote locations, stealing passwords, Internet banking and personal data. It is a registered security risk and should be removed immediately.
Winlogon.exe:-
Winlogon.exe is the windows logon component that manages logon and logoff activity. When a user logs on to the local system, Winlogon performs all the authentication tasks. It is not a virus.