alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT RIG EK Landing March 20 2015 M2"; flow:established,from_server; file_data; content:"|22 29 3b 2f 2a|"; pcre:"/^[^\x2a]+\x2a\x2f(?:\x2f\x2a[^\x2a]+\x2a\x2f)*?(?P<arg>[a-z0-9]{3,})(?:\x2f\x2a[^\x2a]+\x2a\x2f)*?\x28[^\x29]+\x29\x3b\x2f\x2a[^\x2a]+\x2a\x2f(?:\x2f\x2a[^\x2a]+\x2a\x2f)*?(?P=arg)(?:\x2f\x2a[^\x2a]+\x2a\x2f)*?\x28/R"; classtype:exploit-kit; sid:2020726; rev:2; metadata:created_at 2015_03_23, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)