Probably. Currently I can't imagine anyone wanting to buy that domain name for that reason, and neither can I imagine why else the OP registered it other than trying to make money off someone's trademark. Whether Microsoft will take action or not is solely up to them, even if others think they won't go after everyone. Count yourself lucky if they don't, and be ready to deal with the results if they do go after you. And my last paragraph above is for everyone else reading this. YMMV. As to whether a registrar should be liable for, say, contributory infringement, there's no stopping anyone from trying. But you'd have to show the registrar is willingly and knowingly involved, and that's rather tough to demonstrate. Lockheed Martin and Size Inc. sued the original Network Solutions Inc. exactly for that reason. They both lost.
No idea on this but in GoDaddy's aftermarket auctions you can't just submit your domains... there is an 'approved' layer involved so at the very least "the system" does so willingly and knowingly. (Unlike SEDO.) But since it is clear that volumes of auctioners with a volume of potentially infringing domains are allow to advertise in the public eye with no ill effects... no one else thinks so.