ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.GORAT.[POST]

Query · suricata

flow:established,to_server;
urilen:1;
http.request_line;
content:"POST / HTTP/1.1"; bsize:15;
http.connection;
content:"upgrade"; depth:7;
http.header;
content:"|0d 0a|Upgrade|3a 20|tcp/1|0d 0a|"; fast_pattern;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
content:!"|0d 0a|Accept";
content:!"|0d 0a|Cookie|0d 0a|";
Raw source ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.GORAT.[POST] · 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 http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.GORAT.[POST]";
    flow:established,to_server;
    urilen:1;
    http.request_line;
    content:"POST / HTTP/1.1"; bsize:15;
    http.connection;
    content:"upgrade"; depth:7;
    http.header;
    content:"|0d 0a|Upgrade|3a 20|tcp/1|0d 0a|"; fast_pattern;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    content:!"|0d 0a|Accept";
    content:!"|0d 0a|Cookie|0d 0a|";
    reference:url,github.com/fireeye/red_team_tool_countermeasures;
    classtype:trojan-activity;
    sid:2031270; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_08, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_24;
)

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