alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MOBILE_MALWARE Android/FakeCalls CnC Server Response"; flow:established,to_client; http.stat_code; content:"200"; file.data; content:"|22|a01|22 3a 20 22|"; fast_pattern; content:"|22|b05|22 3a 20 22|"; content:"|22|a07|22 3a 20 22|"; reference:url,research.checkpoint.com/2023/south-korean-android-banking-menace-fakecalls/; classtype:trojan-activity; sid:2044655; rev:1; metadata:affected_product Android, attack_target Mobile_Client, created_at 2023_03_16, deployment Perimeter, deployment SSLDecrypt, malware_family FakeCalls, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_16;)