ET MALWARE Win32/SocksTroy Session Initiation Attempt M1

Query · suricata

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;
Raw source ET MALWARE Win32/SocksTroy Session Initiation Attempt M1 · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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