alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN Metasploit WMAP GET len 0 and type"; flow:established,to_server; threshold:type limit, track by_src,count 1,seconds 60; http.method; content:"GET"; http.header; content:"|0d 0a|Content-Type|3A 20|text/plain|0d 0a|Content-Length|3A 20|0|0d 0a|"; classtype:attempted-recon; sid:2011974; rev:5; metadata:affected_product Any, attack_target Client_and_Server, created_at 2010_11_24, deployment Perimeter, deployment Internet, deployment Internal, deployment Datacenter, confidence Medium, signature_severity Critical, tag Metasploit, updated_at 2020_09_03;)