2411
A ransomware variant which has been relatively inactive for almost two years is back , and this time it 's stealing user credentials from victims in addition to demanding a ransom to unencrypt locked files .
 ( data breach: stealing,  user credentials: compromised data, victims: victim, A ransomware variant: 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:
 ( data breach: stealing,  user credentials: compromised data, victims: victim, A ransomware variant: tool) 