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;)