ET HUNTING Possible Fake 404 Credential Phish Landing Page

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.header;
content:"X-Powered-By: PHP";
content:"PHPSESSID="; startswith;
file.data;
content:"<title>404 Not Found</title><p>The requested URL was not found on this server.</p>"; fast_pattern;
Raw source ET HUNTING Possible Fake 404 Credential Phish Landing Page · 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 HUNTING Possible Fake 404 Credential Phish Landing Page";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.header;
    content:"X-Powered-By: PHP";
    content:"PHPSESSID="; startswith;
    file.data;
    content:"<title>404 Not Found</title><p>The requested URL was not found on this server.</p>"; fast_pattern;
    reference:url,github.com/phish-report/IOK;
    classtype:credential-theft;
    sid:2038494; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_08_11, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_03;
)

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