alert http $HOME_NET any -> $EXTERNAL_NET 1024: (
msg:"ET MOBILE_MALWARE AndroidOS/Basbanke.A Activity (POST)";
flow:established,to_server;
http.request_line;
content:"POST /rdc?method="; fast_pattern; startswith;
http.user_agent;
content:"okhttp/"; startswith;
http.header_names;
content:!"Referer";
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
reference:md5,220ec1e3effb6f4a4a3acb6b3b3d2e90;
reference:url,www.cleafy.com/cleafy-labs/how-brata-is-monitoring-your-bank-account;
classtype:trojan-activity;
sid:2034965; rev:1;
metadata:attack_target Mobile_Client, created_at 2022_01_25, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_25;
)