When I first saw your question, I posted an answer indicating that it was indeed a bot and that you should rerun malwarebytes and anti virus, again, after being updated.
Since then, to my surprise, I find that I have the same scheduled task in my task scheduler. So far I have found that it is part of the Windows Live group of programs.
It is located in c:/program files/windows live/soxe.
Trust me I, too now, want to get to the bottom of this. I will post as I find additional information. It may actually be a bot; we cannot trust it just because its placed there by microsoft.
Edit: To date, I have found that it is essential to at least some of the Windows Live Software and should not be deleted, unless the corresponding software is removed.
I am very surprised, but I am having problems finding the actual purpose for this task