alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Sakura obfuscated javascript Jun 1 2013"; flow:established,from_server; file_data; content:"a5chZev!"; distance:0; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016966; rev:7; metadata:created_at 2013_06_04, 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;)