Rule History

alert http any any -> any any (msg:"ET MALWARE ELF/LiLocked Ransom Note in HTTP Response"; flow:established,from_server; http.stat_code; content:"200"; file.data; content:"ENCRYPTED|20|ALL|20|YOUR|20|SENSITIVE"; depth:200; content:"STRONG|20|ENCRYPTION"; distance:0; content:"BUY|20|A|20|DECRYPTION|20|KEY"; distance:0; fast_pattern; reference:url,www.zdnet.com/article/thousands-of-servers-infected-with-new-lilocked-lilu-ransomware/; classtype:trojan-activity; sid:2027968; rev:2; metadata:affected_product Linux, attack_target Server, created_at 2019_09_09, deployment Perimeter, malware_family LiLocked, performance_impact Low, confidence High, signature_severity Major, tag Ransomware, updated_at 2020_09_01;)