alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Disdain EK URI Struct Aug 23 2017 M2"; flow:established,to_server; urilen:34; flowbits:set,ET.DisDain.EK; http.uri; content:"/test.mp3"; offset:25; depth:9; pcre:"/^\/(?=[a-z0-9]{0,22}[A-Z]+?[a-z0-9])(?=[A-Z0-9]{0,22}[a-z]+?[A-Z0-9])[a-zA-Z0-9]{24}\/test\.mp3$/"; classtype:exploit-kit; sid:2024607; rev:4; metadata:created_at 2017_08_23, deprecation_reason Age, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_12, reviewed_at 2023_12_12;)