alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Spy.Mekotio.EY Payload Request"; flow:established,to_server; dsize:10; content:"ARQUIVOX|0d 0a|"; fast_pattern; reference:md5,3aa473d7ce55eb5e5c0da9e81ccfc051; classtype:trojan-activity; sid:2039179; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_10_12, deployment Perimeter, malware_family Mekotio, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_12;)