alert http $EXTERNAL_NET any -> $HOME_NET [2375,2376] (msg:"ET INFO External Host Sending Docker Swarm Join Command"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/swarm/join"; endswith; http.request_body; content:"|7b 22|ListenAddr|22 3a 22|"; startswith; content:"|22|RemoteAddrs|22 3a 5b 22|"; content:"|2c 22|JoinToken|22 3a 22|"; http.header_names; content:!"Referer"; reference:url,github.com/Caprico1/Docker-Botnets/commit/bbfd65fce31d74bfa798e00a2c918022a45d211a; classtype:misc-activity; sid:2031587; rev:3; metadata:attack_target Server, created_at 2021_01_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Docker, updated_at 2023_06_23;)