alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Malicious JS Leading to Fiesta EK"; flow:established,from_server; file_data; content:"xapLoad"; fast_pattern; content:"swfLoad"; content:"xapURL"; content:"swfURL"; content:"errURL"; content:"var id"; classtype:exploit-kit; sid:2019920; rev:2; metadata:created_at 2014_12_11, confidence High, signature_severity Major, updated_at 2019_07_26;)