alert dns $HOME_NET any -> any any (msg:"ET INFO DNSBin Demo (requestbin .net) - Data Exfil"; threshold:type limit, track by_src, seconds 180, count 1; dns.query; bsize:>32; content:"|2e|"; content:".requestbin.net"; distance:1; within:15; endswith; reference:md5,2e065fdd4099b51a48228a30793e3267; reference:url,requestbin.net/dns; classtype:misc-activity; sid:2039018; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_09_27, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_08_25, reviewed_at 2023_11_17;)