ET HUNTING Possible Snake Header in HTTP Request

Query · suricata

flow:established,to_server;
http.header_names;
content:"Cockie|0d 0a|"; fast_pattern;
Raw source ET HUNTING Possible Snake Header in HTTP Request · 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 HUNTING Possible Snake Header in HTTP Request";
    flow:established,to_server;
    http.header_names;
    content:"Cockie|0d 0a|"; fast_pattern;
    reference:url,cisa.gov/news-events/cybersecurity-advisories/aa23-129a;
    classtype:misc-activity;
    sid:2045633; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_10, deployment Perimeter, malware_family Snake, performance_impact Significant, confidence Low, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_10;
)

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