Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Query to IP Check Tool With Minimal Headers (ip .tool .chinaz .com"; flow:established,to_server; http.method; content:"GET"; http.host; content:"ip.tool.chinaz.com"; bsize:18; fast_pattern; http.content_len; content:"0"; bsize:1; http.header_names; content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a 0d 0a|"; bsize:26; reference:md5,6c970b5d5a68455346e504069179ff80; reference:url,infosec.exchange/@still/111692194892367763; classtype:misc-activity; sid:2049897; rev:1; metadata:created_at 2024_01_03, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_03;)