It's a Base64 encoded message, once decoded it says "you need to decrypt this one. it's a md5 hash. 7f10d8d24c6302747d2e053dde9833f8"
You don't decrypt MD5, you bruteforce it.
I know the exact term is "bruteforcing", just wanted to let the more expert find it first, did you think i would give it so easily anyway?

But once someone "bruteforces" that md5 hash the answer is there, in front of your eyes.