alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT RedKit applet + obfuscated URL Apr 7 2013"; flow:established,from_server; file_data; content:"applet"; fast_pattern; content:"8ss&299"; within:200; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016734; rev:2; metadata:created_at 2013_04_09, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)