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The MacDownloader malware was designed to profile the victim 's computer , and then steal credentials by generating fake system login boxes and harvesting them from Apple 's password management system , Keychain .
 credentials: compromised data; generating fake system login boxes: attack pattern; computer: victim; The MacDownloader malware: tool; 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: data breach 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, number of victim, compromised data, number of data 
Text: {0} 
Answer:
 credentials: compromised data; generating fake system login boxes: attack pattern; computer: victim; The MacDownloader malware: tool; victim: victim