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In fact , so - called ransomware has become one of the most lucrative criminal enterprises in the U.S. and internationally , with the FBI estimating total payments are nearing $ 1 billion .
 ransomware: tool; the U.S.: place; internationally: place; $ 1 billion: price
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:
 ransomware: tool; the U.S.: place; internationally: place; $ 1 billion: price