alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MOBILE_MALWARE Trojan-Ransom.AndroidOS.CryCrypt.c Checkin";
flow:established,to_server;
http.uri;
content:"/socket.io/?EIO=3&transport=polling";
http.header;
content:"finger|3a 20|eyJhcGlWZXJzaW9uIjo"; fast_pattern;
http.user_agent;
content:"okhttp/";
http.header_names;
content:!"Referer";
reference:md5,fdf3e983bc097042d6d6cdb4fb62639e;
reference:url,www.lookout.com/blog/iranian-spyware-bouldspy;
classtype:command-and-control;
sid:2045287; rev:1;
metadata:affected_product Any, attack_target Mobile_Client, created_at 2023_05_02, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_02;
)