ET INFO Exfil to FormSpark Form

Query · suricata

flow:established,to_client;
http.stat_code;
content:"302";
http.location;
content:"submitted.formspark.io?_formId="; fast_pattern;
content:"&_referer="; distance:0;
Raw source ET INFO Exfil to FormSpark Form · 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 Exfil to FormSpark Form";
    flow:established,to_client;
    http.stat_code;
    content:"302";
    http.location;
    content:"submitted.formspark.io?_formId="; fast_pattern;
    content:"&_referer="; distance:0;
    classtype:bad-unknown;
    sid:2066745; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2026_01_14;
)

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