alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/CopperStealer Installer Started"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"type=install&seller="; startswith; fast_pattern; content:"&price="; content:"&guid="; content:"&ver="; content:"&origin="; reference:md5,e2d3f779d8d646f7287dc58976e79494; classtype:command-and-control; sid:2031928; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_02_09, deployment Perimeter, malware_family Win32_CopperStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_09;)