ET HUNTING Possible External IP Check

Query · suricata

flow:established,to_server;
http.uri;
content:".php?action=check_ip&ip="; fast_pattern;
http.header_names;
content:!"Referer|0d 0a|";
target:src_ip;
Raw source ET HUNTING Possible External IP Check · Suricata
Esc
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 External IP Check";
    flow:established,to_server;
    http.uri;
    content:".php?action=check_ip&ip="; fast_pattern;
    http.header_names;
    content:!"Referer|0d 0a|";
    classtype:misc-activity;
    sid:2051870; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_04_01, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_01;
    target:src_ip;
)

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