alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Java Web Start Command Injection (.jar)"; flow:established,from_server; content:"http|3a| -J-jar -J|5C 5C 5C 5C|"; nocase; content:".launch("; nocase; pcre:"/http\x3a -J-jar -J\x5C\x5C\x5C\x5C\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\x5C\x5C[^\n]*\.jar/i"; reference:url,seclists.org/fulldisclosure/2010/Apr/119; classtype:web-application-attack; sid:2011698; rev:6; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services;)