alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT DotkaChef Payload Dec 20 2013"; flow:established,to_server; content:"/?f=bb.mp3"; http_uri; flowbits:set,et.exploitkitlanding; reference:url,www.kahusecurity.com/2013/analyzing-dotkachef-exploit-pack/; classtype:exploit-kit; sid:2017894; rev:3; metadata:created_at 2013_12_21, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)