Even the most advanced scanners don’t guarantee that your computer is protected from spy applications so many computers are infected. Such situation can cause troublesome consequences. But some of these applications can be removed without assistance antivirus software.

Here is the list of widespread spy applications which have to be deleted. Some of them have even setup application and can be removed by means Add and Remove Programs menu of Control Panel. From example you detected mwsoemon.exe in the list of current processes. So you can find smth like MyWebSearch Toolbar in the list of installed software and use uninstall button. If there is no such application in this list you can use special software like HijackThis!

This is the list of some spy applications and corresponding processes.

Process Application
mwsoemon.exe MyWebSearch toolbar
mediaaccess.exe WindUpdates.com
mediaacck.exe WindUpdates.com
wtoolsa.exe HuntBar
wsup.exe HuntBar spyware
cxtpls.exe AproposMedia
autoupdate.exe Apropos Media adware
wtoolss.exe HuntBar
istsvc.exe IST adware/hijacker
optimize.exe MoneyTree Dialer
gmt.exe Gator adware
cmesys.exe Gator adware
tbps.exe Neo Toolbar
pib.exe PIB Toolbar
gah95on6.exe ShopAtHome Select
mediapass.exe WindUpdates.com
mediapassk.exe WindUpdates.com
tbpssvc.exe Neo Toolbar
bargains.exe Bargain Buddy
Save.exe WhenU SaveNow adware
Salm.exe 180Search Assistant
rk.exe Marketscore “monitoring”
webrebates0.exe TopRebates hijacker/adware
webrebates1.exe TopRebates hijacker/adware
vmss.exe Delfin Media Viewer

Closing of one of these processes can cause Windows shout down or system instability.

System Idle Process
explorer.exe
taskmgr.exe
spoolsv.exe
lsass.exe
csrss.exe
smss.exe
winlogon.exe

svchost.exe – usually more than one
services.exe

If you stopped any other process Windows would work properly.