So I just upgraded to windows 10 today, and after almost a day of usage, I took a look at the Start-up tab in Task Manager.
There I see listed:
Program, literally, the name listed is "Program". It says that it's enabled, and the startup impact is not measured. There's no data about the publisher.
For the people who run windows 10: do you have it listed in the Start-up list too? (im a bit suspicious)