alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Metasploit Based Unknown EK Jar Download June 03 2013"; flow:established,to_server; http.uri; content:"/j_"; content:".jar"; endswith; pcre:"/\/j_[a-z0-9]+_(?:0422|1723|3544|5076)\.jar$/"; http.user_agent; content:"Java/1."; fast_pattern; classtype:exploit-kit; sid:2016965; rev:9; metadata:affected_product Any, attack_target Client_and_Server, created_at 2013_06_04, deployment Perimeter, deployment Internet, deployment Internal, deployment Datacenter, confidence Medium, signature_severity Critical, tag Metasploit, updated_at 2024_03_17;)