6 - Fun with Numb3rs - 100 pts

Description
Category: Reversing

Uh oh..
This door is protected with number scroll authenticator. There's "powered by .NETv4" sign.

Download
http://www.plaidctf.com/chals/d573190633309f8a930bccbd199a16a4564c35fb.exe

Find out the combination and get the key!