alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN WebShag Web Application Scan Detected"; flow:to_server,established; http.user_agent; content:"webshag"; reference:url,www.scrt.ch/pages_en/outils.html; classtype:attempted-recon; sid:2009158; rev:7; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_14;)