alert tcp $HOME_NET any -> $EXTERNAL_NET 32691 (msg:"ET MALWARE Win32/Packed.BlackMoon.A Checkin"; flow:established,to_server; content:"|d3 c3 bb a7 bd f8 c8 eb 7c 7c|"; offset:12; depth:10; fast_pattern; content:"|7c 7c 7c 7c 49 4f 7c 7c 31 31 31|"; reference:md5,d90196ad534e1729c33bd1a83352b972; classtype:trojan-activity; sid:2044553; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_09, deployment Perimeter, malware_family Win32_Packed_BlackMoon_A, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_09;)