alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE OSX/Mami CnC Checkin"; flow:established,to_server; urilen:1; http.method; content:"POST"; http.header; content:"User-Agent|3a 20 0d 0a|"; fast_pattern; http.request_body; content:"r="; depth:2; content:"&rc="; distance:0; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:url,objective-see.com/blog/blog_0x26.html; reference:md5,8482fc5dbc6e00da151bea3eba61e360; classtype:command-and-control; sid:2025199; rev:4; metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2018_01_14, deployment Perimeter, malware_family Mami, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2024_03_11;)