ET MALWARE Zloader Related Download Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/processingSetRequest"; fast_pattern;
content:"/?servername="; distance:3;
http.user_agent;
content:"powershell"; nocase;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Zloader Related Download Activity (GET) · Suricata
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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 Zloader Related Download Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/processingSetRequest"; fast_pattern;
    content:"/?servername="; distance:3;
    http.user_agent;
    content:"powershell"; nocase;
    http.header_names;
    content:!"Referer";
    reference:md5,06ca129910fd79de8bdc7a319949fb25;
    reference:url,medium.com/walmartglobaltech/signed-dll-campaigns-as-a-service-7760ac676489;
    classtype:trojan-activity;
    sid:2034892; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_01_11, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_11, reviewed_at 2023_08_22;
)

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