alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE BYOB - Python Backdoor Stager Download"; flow:established,to_client; http.stat_code; content:"200"; http.response_body; content:"|0a 27|Stager|20 28|Build Your Own Botnet|29 27 0a|"; fast_pattern; reference:md5,76117987409f341b5272958e27dd9ac5; classtype:command-and-control; sid:2030551; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_07_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_16;)