alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Unknown_gmf EK - flsh.html"; flow:established,to_server; urilen:>80; content:"/flsh.html"; http_uri; classtype:exploit-kit; sid:2016056; rev:2; metadata:created_at 2012_12_18, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)