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The worm used in Friday ’s attack , dubbed WannaCry or WanaCrypt0r , encrypted more than 200,000 computers in more than 150 countries for ransoms of $ 300 to $ 600 to restore access .
 ( ransom: attack,  WannaCry: tool, WanaCrypt0r: tool, The worm: tool, encrypted more than 200,000 computers: attack pattern, Friday: time) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( ransom: attack,  WannaCry: tool, WanaCrypt0r: tool, The worm: tool, encrypted more than 200,000 computers: attack pattern, Friday: time) 