alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT CoolEK Payload - obfuscated binary base 0"; flow:established,to_client; file_data; content:"|af 9e b6 98 09 fc ee d0|"; within:8; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2016403; rev:2; metadata:created_at 2013_02_12, confidence Medium, 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;)