alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Android/AhMyth RAT WebSocket Session"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/socket.io/?release="; startswith; fast_pattern; content:"&model="; distance:0; content:"&EIO="; distance:0; content:"&id="; distance:0; content:"&transport=websocket&manf="; distance:0; content:"&sid="; distance:0; http.header_names; content:!"Referer"; reference:url,www.stratosphereips.org/blog/2021/5/6/dissecting-a-rat-analysis-of-the-ahmyth; classtype:trojan-activity; sid:2034165; rev:1; metadata:affected_product Android, attack_target Client_Endpoint, created_at 2021_10_11, deployment Perimeter, malware_family AhMyth, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_11;)