ET MALWARE Win32/Neptune Loader Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri.raw;
content:"|2f 2f 2f 2f 2f 2f 2f 2f 2f 2f 2f 2f|"; startswith; fast_pattern;
content:"|2f 2f 2f|tasks.php?bid="; distance:10;
http.user_agent;
content:"|2f 2f|"; bsize:2;
http.header_names;
content:!"Referer";
content:!"Accept";
target:src_ip;
Raw source ET MALWARE Win32/Neptune Loader Activity (GET) · 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 MALWARE Win32/Neptune Loader Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri.raw;
    content:"|2f 2f 2f 2f 2f 2f 2f 2f 2f 2f 2f 2f|"; startswith; fast_pattern;
    content:"|2f 2f 2f|tasks.php?bid="; distance:10;
    http.user_agent;
    content:"|2f 2f|"; bsize:2;
    http.header_names;
    content:!"Referer";
    content:!"Accept";
    reference:md5,b419a6ad40e2e123727dabfda97e29f5;
    reference:url,tufan-gungor.github.io/posts/neptune-loader-analysis/;
    classtype:trojan-activity;
    sid:2050109; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_01_17, deployment Perimeter, malware_family Win32_Neptune, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_17;
    target:src_ip;
)

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