alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Aurora Ransomware CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?generate="; fast_pattern; content:"/"; distance:0; content:"&hwid="; distance:0; reference:md5,2409c058a86cd8743abb10a5735ef487; classtype:command-and-control; sid:2025931; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_07_30, deployment Perimeter, malware_family Aurora_Ransomware, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_01, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)