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The assault on Hollywood Presbyterian occurred Feb 5 , when hackers using malware infected the institution 's computers , preventing hospital staff from being able to communicate from those devices , said Chief Executive Allen Stefanek .
 Hollywood Presbyterian: attacker; Feb 5: time; hackers: attacker; using malware infected the institution 's computers: attack pattern; preventing hospital staff from being able to communicate from those devices: attack pattern
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:
 Hollywood Presbyterian: attacker; Feb 5: time; hackers: attacker; using malware infected the institution 's computers: attack pattern; preventing hospital staff from being able to communicate from those devices: attack pattern