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WCry , the National Security Agency exploit - powered ransomware worm that began spreading worldwide on Friday , had reportedly affected hundreds of thousands of computers before the weekend , but the malware had only brought in about $ 20,000 in ransom payments .
 ( ransom: ransom payments,  $ 20,000: price, the malware: tool, weekend: time, computers: victim) 
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: ransom payments,  $ 20,000: price, the malware: tool, weekend: time, computers: victim) 