https://www.bleepingcomputer.com/news/security/robbinhood-ransomware-claims-its-protecting-your-privacy/

A new ransomware is in play called RobbinHood that is targeting entire networks and then encrypting all computers that they can gain access to. They then request a certain amount of  bitcoins to decrypt a single computer or a larger amount to decrypt the entire network.

Not much is currently known about this ransomware and a sample for RobbinHood has not currently been found. We  have, though, seen the ransom notes and encrypted files of various victims, which allows us to put together a picture of how this ransomware may operate.