587
Once the payload has been dropped and run on a compromised system , GandCrab , for the most part , acts like any other form of ransomware , encrypting Windows files using an RSA algorithm and demanding payment for the ' GandCrab Decryptor ' required to unlock the files .
 using an RSA algorithm: attack pattern; GandCrab: tool; ransomware: tool; encrypting Windows files: attack pattern; GandCrab Decryptor: attacker
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 using an RSA algorithm: attack pattern; GandCrab: tool; ransomware: tool; encrypting Windows files: attack pattern; GandCrab Decryptor: attacker