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In its own words , the malware part of Satan is simply explained : Satan is a ransomware , a malicious software that once opened in a Windows system , encrypts all the files , and demands a ransom for the decryption tools .
 ( ransom: demands a ransom,  encrypts all the files: attack pattern, Windows system: victim, a malicious software: tool, ransomware: tool, Satan: tool) 
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: demands a ransom,  encrypts all the files: attack pattern, Windows system: victim, a malicious software: tool, ransomware: tool, Satan: tool) 