alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/SupremeBot CnC Checkin (POST) M1"; flow:established,to_server; urilen:<30; http.method; content:"POST"; http.uri; content:"connection.php"; endswith; fast_pattern; http.connection; content:"Keep-Alive"; http.content_type; content:"application/x-www-form-urlencoded"; http.content_len; bsize:2; content:"38"; http.request_body; content:"m="; startswith; pcre:"/^(?:[0-9a-z]{8})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{12})$/R"; reference:md5,90647ec1bc00c6d35ba3fd7ee214cd20; reference:url,blog.cyble.com/2023/06/23/trojanized-super-mario-game-installer-spreads-supremebot-malware; classtype:trojan-activity; sid:2046643; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_06_26, deployment Perimeter, malware_family SupremeBot, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_27;)