ET HUNTING HTTP Redirect Chain With Image Filetype in URI

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/(?:png|jpg|jpeg)/";
content:"|3f|response|2d|content|2d|type|3d|"; fast_pattern; within:36;
content:!"X-Amz-Algorithm=";
Raw source ET HUNTING HTTP Redirect Chain With Image Filetype in URI · 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 HTTP Redirect Chain With Image Filetype in URI";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/(?:png|jpg|jpeg)/";
    content:"|3f|response|2d|content|2d|type|3d|"; fast_pattern; within:36;
    content:!"X-Amz-Algorithm=";
    classtype:misc-activity;
    sid:2057440; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_11_13, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_11_13;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.