alert http any any -> any any (msg:"TGI HUNT unknown etherium server probe"; flow:to_server,established; content:"POST"; http_method; urilen:1; content:"method|22 3a 22|eth_accounts"; http_client_body; http_content_type; content:"application/json"; reference:url,github.com/ethereum/wiki/wiki/JSON-RPC; threshold:type limit, track by_src, seconds 60, count 1; classtype:bad-unknown; sid:2610280; rev:1;)