alert tcp $HOME_NET any -> $EXTERNAL_NET 9639 (msg:"ET MALWARE Trojan/Win32.Agent Variant Checkin"; flow:established,to_server; content:"|01 01 7b 43 43 43 30 42 33 38 38 2d 31 33 43 43 2d 34 37 35 35 2d 41 35 34 41 2d 41 30 43 38 31 31 38 42 37 46 41 31 7d|"; startswith; fast_pattern; content:"|32 30 32 31 2d 30 38 2d 30 39|"; distance:0; content:"|32 30 32 31 2d 30 38 2d 30 39|"; distance:0; reference:md5,0b7e93b91d2d387112969173c681da92; classtype:trojan-activity; sid:2044344; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_24;)