alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Minimal HTTP GET Request to cl .ly"; flow:established,to_server; http.method; content:"GET"; http.start; content:"HTTP/1.1|0d 0a|Host|3a 20|cl.ly|0d 0a|Connection|3a 20|Keep-Alive|0d 0a 0d 0a|"; endswith; fast_pattern; classtype:bad-unknown; sid:2031588; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2021_01_29, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2021_01_29;)