alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING HTTP Request for OpenNIC API GeoIP Request"; flow:established,to_server; http.uri; content:"/geoip"; nocase; startswith; http.host; content:"api.opennicproject.org"; bsize:22; fast_pattern; reference:url,wiki.opennic.org/API; classtype:bad-unknown; sid:2032745; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_04_12, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_12;)