i think my keurig is haunted

 im late to the keurig train, and havent really ever used one before. my daughter pointed one out at a thrift store that had little reusuable pods and it was a small machine that didnt take up a lot of space, so i bought it.

after some system flushing (it is used after all) we got it to a decent working condition and i have been using it more or less daily. but sometimes i notice it making an odd noise. unprompted and when the machine is off. 

after making a cup it sometimes moans for lack of a better word.

the machine is off. i think it might have gremlins lol.