alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ZenRAT Tasking CnC Response M1"; flow:established,to_client; flowbits:isset,ET.ZenRATTasking; content:"|00 19 00 00 00 00 00 00 00|"; startswith; pcre:"/^[\x00-\xff]\x00{3}[\x00-\xff]{2}\x00{10}$/R"; reference:md5,6f809b1c82d9fb6cd277c6b645ecaf84; classtype:trojan-activity; sid:2047764; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2023_08_25, deployment Perimeter, malware_family ZenRAT, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_03_14, reviewed_at 2023_08_25; target:dest_ip;)