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Then , in early 2016 , the Callisto Group began sending highly targeted spear phishing emails with malicious attachments that contained , as their final payload , the “ Scout ” malware tool from the HackingTeam RCS Galileo platform .
 the Callisto Group: attacker; early 2016: time; spear phishing emails: tool
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: phishing 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, trusted entity 
Text: {0} 
Answer:
 the Callisto Group: attacker; early 2016: time; spear phishing emails: tool