It is a way of getting a known programme to run a malware programme

Directory of C:\Program Files\Windows Defender 11/21/2010 03:06 AM en-US [c:\windows\system32\config] 07/13/2009 09:41 PM MpAsDesc.dll [c:\windows\system32\config] 05/27/2013 01:50 AM MpClient.dll [c:\windows\system32\config] 07/13/2009 09:39 PM MpCmdRun.exe [c:\windows\system32\config] 05/27/2013 01:50 AM MpCommu.dll [c:\windows\system32\config] 07/13/2009 09:29 PM MpEvMsg.dll [c:\windows\system32\config] 07/13/2009 09:41 PM MpOAV.dll [c:\windows\system32\config] 07/13/2009 09:41 PM MpRTP.dll [c:\windows\system32\config] 05/27/2013 01:50 AM MpSvc.dll [c:\windows\system32\config] 07/13/2009 09:39 PM MSASCui.exe [c:\windows\system32\config]

How is the computer behaving now ?