alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SPECIFIC_APPS phpSkelSite theme parameter remote file inclusion"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/login.tpl.php?"; nocase; content:"theme="; nocase; pcre:"/theme=\s*(ftps?|https?|php)\:\//i"; reference:bugtraq,33092; classtype:web-application-attack; sid:2009071; rev:6; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)