ET INFO Telegram Auth Cookie (stel_ssid)

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.cookie;
content:"stel_ssid="; fast_pattern;
Raw source ET INFO Telegram Auth Cookie (stel_ssid) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET INFO Telegram Auth Cookie (stel_ssid)";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.cookie;
    content:"stel_ssid="; fast_pattern;
    classtype:misc-activity;
    sid:2071581; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_08_18, deployment Perimeter, confidence High, signature_severity Informational, tag Telegram, updated_at 2026_08_18;
)

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