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The ransomware presents its victim with a decryption code , which they can enter in a Dark Web portal to pay the ransom and unlock their files .
 a Dark Web portal: payment method; they: victim; The ransomware: tool; its victim: victim
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:
 a Dark Web portal: payment method; they: victim; The ransomware: tool; its victim: victim