alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Ave Maria/Warzone RAT Encrypted CnC Checkin (Inbound)"; flow:established,to_client; stream_size:server,=,13; dsize:12; content:"|09 12 3b 42|"; depth:4; fast_pattern; content:"|33 a2 44|"; distance:1; within:3; content:"|01 86 73|"; distance:1; within:3; reference:md5,48ad0ffe0b3209700f2b2d73cf2777dc; classtype:command-and-control; sid:2036735; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_06, deployment Perimeter, malware_family AveMariaRAT, confidence High, signature_severity Major, updated_at 2022_07_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;)