ET MALWARE FBot Downloader Generic GET for ARM Payload

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/fbot.arm"; depth:9; fast_pattern;
content:".u"; endswith;
pcre:"/^\/fbot\.arm\d{1}\.u$/i";
http.protocol;
content:"HTTP/1.0";
Raw source ET MALWARE FBot Downloader Generic GET for ARM Payload · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE FBot Downloader Generic GET for ARM Payload";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/fbot.arm"; depth:9; fast_pattern;
    content:".u"; endswith;
    pcre:"/^\/fbot\.arm\d{1}\.u$/i";
    http.protocol;
    content:"HTTP/1.0";
    reference:url,blog.netlab.360.com/the-new-developments-of-the-fbot-en/;
    classtype:trojan-activity;
    sid:2026951; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_02_21, deployment Perimeter, malware_family Fbot, performance_impact Low, confidence Medium, signature_severity Major, tag Downloader, tag DDoS, updated_at 2020_09_16;
)

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