If I had my way
The entire senior management of any organisation who paid a ransom to these bastards would be charged with financing organised crime, and would be looking at lengthy stretches at Her Majesty's leisure. There is a very good reason our authorities do not negotiate with terrorists, and why they do not pay ransoms for kidnapped expats.
This lot even admitted they had backups. So why was it necessary to pay these vermin? Re-image your machines and replace the missing data, and swallow the cost as an object lesson in sound security procedures.