alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE AllaKore RAT CnC Checkin M1"; flow:established,to_server; content:"|3c 7c|mainzsoccer|7c|"; fast_pattern; startswith; classtype:attempted-admin; sid:2035542; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_21, deployment Perimeter, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_22;)