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In the months since the attack , the bitcoin wallets containing the money extorted by WannaCry were left untouched , but August 3 saw them suddenly start to be emptied .
 the months: time; the bitcoin wallets: payment method
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:
 the months: time; the bitcoin wallets: payment method