alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/SocksTroy Session Initiation Attempt M1"; stream_size:client,<,263; flow:established,to_server; content:"|00 00 fe 00|"; offset:2; depth:4; byte_jump:4,0, little, from_beginning, post_offset 3; isdataat:!2,relative; reference:md5,0f9b876031ffc16c7eedfeaf2ca9dc5b; classtype:trojan-activity; sid:2042771; rev:1; metadata:attack_target Client_and_Server, created_at 2022_12_13, deployment Perimeter, malware_family Win32_SocksTroy, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_13;)