alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Higaisa CnC (ipconfig)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"inter.php"; bsize:9; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.request_body; content:"&test="; startswith; fast_pattern; reference:url,blog.malwarebytes.com/threat-analysis/2020/06/higaisa/; classtype:command-and-control; sid:2030265; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_06_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_08;)