Malware causes spike in svchost.exe program

My pc is running on windows 7 and is having an issue where the svchost.exe escalates it's memory usage and maxes out my cpu until it causes the computer to crash. I do not know what to do.
 
Here's a list of services (at least on my win/7) that are threads within svchosts:
{the PID is the program itself and everything shown after it is a thread therein}

So; first question would be in services.msc, which services are actually started and do you know why?

Second, you need something like Process Explorer from sysinternals.com to find the threads
Code:
Image Name					 PID Services									
========================= ======== ============================================
									
svchost.exe					808 DcomLaunch, PlugPlay, Power				 
svchost.exe					896 RpcEptMapper, RpcSs						 
svchost.exe					976 AudioSrv, Dhcp, eventlog,				   
								   HomeGroupProvider, lmhosts				  
svchost.exe					428 AudioEndpointBuilder, hidserv, IPBusEnum,   
								   Netman, PcaSvc, SysMain, TrkWks,			
								   UmRdpService, UxSms, Wlansvc, wudfsvc	   
svchost.exe					588 AeLookupSvc, Appinfo, AppMgmt, BITS,		
								   Browser, CertPropSvc, EapHost, gpsvc,	   
								   IKEEXT, iphlpsvc, LanmanServer, MMCSS,	  
								   ProfSvc, RasAuto, RasMan, Schedule,		 
								   seclogon, SENS, SessionEnv,				 
								   ShellHWDetection, Themes, Winmgmt, wuauserv 
								   
svchost.exe				   1160 EventSystem, fdPHost, netprofm, nsi,		
								   SstpSvc, THREADORDER, W32Time,			  
								   WdiServiceHost							  
svchost.exe				   1240 CryptSvc, Dnscache, LanmanWorkstation,	  
								   NlaSvc, TapiSrv, TermService, Wecsvc		
svchost.exe				   1376 BFE, DPS, MpsSvc, WwanSvc 
				
svchost.exe				   1752 FDResPub, SensrSvc, SSDPSRV, upnphost,	  
								   wcncsvc									 
svchost.exe				   2052 LPDSVC								 
svchost.exe				   2348 stisvc									  
svchost.exe				   2656 p2pimsvc, p2psvc, PNRPsvc				   
svchost.exe				   3320 PolicyAgent								 
svchost.exe				   3380 WinDefend 
								 
svchost.exe				   1168 SDRSVC
 
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