ET INFO GET Request Exfiltrating Username and Hostname

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/index.php?name="; fast_pattern; startswith;
content:"&host="; distance:0;
Raw source ET INFO GET Request Exfiltrating Username and Hostname · 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 INFO GET Request Exfiltrating Username and Hostname";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/index.php?name="; fast_pattern; startswith;
    content:"&host="; distance:0;
    reference:md5,76ee96d37d492dddcd8b62a2a0c1e426;
    classtype:misc-activity;
    sid:2039605; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_10_31, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_31;
)

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