alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE HiveRAT CnC Activity M2"; flow:established,to_server; dsize:<300; content:"|5b 50 61 73 73 77|"; offset:2; depth:6; fast_pattern; threshold:type both, count 10, seconds 60, track by_src; reference:md5,4ae4ab4a84a78e5b00b5edf0941d4354; classtype:command-and-control; sid:2037734; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_11, deployment Perimeter, malware_family FirebirdRAT, confidence Medium, signature_severity Major, updated_at 2022_07_11;)