alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Operation Baby Coin syschk CnC Communication"; flow:to_server,established; http.method; content:"POST"; http.content_type; content:"multipart / form-data|3b 20|boundary = --------------------------- 7dab371b0124"; fast_pattern; bsize:74; http.header_names; content:!"Referer|0d 0a|"; reference:url,blog.alyac.co.kr/1640; classtype:command-and-control; sid:2026609; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_04_25, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_08_27;)