alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE HiveRAT CnC Activity M1"; flow:established,to_server; dsize:<300; content:"|7b 73 77 6f 72 64|"; offset:2; depth:6; fast_pattern; threshold:type both, count 10, seconds 60, track by_src; classtype:command-and-control; sid:2030383; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_24, deployment Perimeter, malware_family FirebirdRAT, confidence High, signature_severity Major, updated_at 2020_06_24;)