alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected SandCat Related Communication (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/hulk/___"; startswith; fast_pattern; content:".php"; within:15; endswith; http.request_body; content:"u_id="; startswith; http.header_names; content:!"Referer|0d 0a|"; reference:md5,fe5338aee73b3aae375d7192067dc5c8; classtype:trojan-activity; sid:2029621; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_03_12, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_03_12;)