alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible Android Stagefright MP4 (CVE 2016-3861) Set"; flow:established,from_server; file_data; content:"ftyp"; fast_pattern; offset:4; depth:4; content:"|00|"; distance:5; within:1; flowbits:set,ET.MP4Stagefright; flowbits:noalert; reference:cve,2016-3861; reference:url,googleprojectzero.blogspot.com.br/2016/09/return-to-libstagefright-exploiting.html; classtype:attempted-user; sid:2023184; rev:2; metadata:created_at 2016_09_12, cve CVE_2016_3861, confidence Medium, signature_severity Major, tag Android_Exploit, updated_at 2019_07_26;)