alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/AZORult V3.3 Client Checkin M3"; flow:established,to_server; http.method; content:"POST"; http.request_body; pcre:"/^(?:\x00\x00\x00)?(?:[\x40-\x42]|[\x45-\x47]|\x26\x66)/P"; content:"|8b 31 11 8b 30 66 8b 30 61 8b 30 66 ef 26 66 9c 46 16 8b 30 63 8b 31 11|"; distance:6; within:49; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; classtype:command-and-control; sid:2029406; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_10, deployment Perimeter, malware_family AZORult, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_08_30;)