alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Fiesta EK Landing Oct 09 2013"; flow:established,from_server; file_data; content:"|27|urn|3a|schemas-microsoft-com|3a|vml|27|"; content:"=String.fromCharCode|3b|"; fast_pattern; content:"return parseInt"; content:"return |27 27|"; classtype:exploit-kit; sid:2017577; rev:5; metadata:created_at 2013_10_11, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_17;)