ET MALWARE ELF/Muhstik Attempting to Download Payload

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?port="; fast_pattern;
http.user_agent;
content:"wget/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE ELF/Muhstik Attempting to Download Payload · 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 ELF/Muhstik Attempting to Download Payload";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?port="; fast_pattern;
    http.user_agent;
    content:"wget/";
    http.header_names;
    content:!"Referer";
    reference:url,blog.netlab.360.com/gpon-exploit-in-the-wild-i-muhstik-botnet-among-others-en/;
    classtype:trojan-activity;
    sid:2025575; rev:3;
    metadata:affected_product Linux, attack_target Networking_Equipment, created_at 2018_05_11, deployment Perimeter, malware_family Muhstik, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25;
)

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