Ransomware with exfiltration capabilities

As we basically know, ransomware is all about blocking the victim's access to his/her files in exchange for ransom. However, this is not the case for a new instance of ransomware named DoppelPaymer. Recently, a bunch of proprietary documents were leaked by criminals behind the DoppelPaymer after Visser Precision, a contractor company in the aerospace market, declined to pay a ransom. In general, it is not a good idea to pay the ransom when you are hit by ransomware. However, ransomware with exfiltration capabilities may be more convincing for the victims to pay the ransom.