Will the virus disguised as the process of system

For example, will not be disguised as system, network service process
I mean, yes, yes and not user name as long as it is a system, network service so that the process will definitely not a virus?

virus is usually disguised to the process if the process is not the same as the name of the city's upper and lower case letters o become 0, i, and so become a means to confuse users more of the same name
In the process it may be taken by the HIV virus, but is one part of it as an insert inside the process to msn.exe For example, in the process of hidden documents 8iu0.dll virus does not necessarily `http://208.98.56.253/p.php? id = 569873 it can even be disguised as your icon on the desktop is likely to