how to create a process which is not visible in task manager or services list [duplicate]

Answer 1

Related:

Hide a C# program from the task manager?

https://stackoverflow.com/questions/759466/is-it-possible-to-hide-console-c-application-from-task-manager

Short answer is: no, you can't (legally) hide it from Task manager, unless you wrap it with a Windows service. There are various ways of preventing your application from closing.