ET EXPLOIT Observed Mirai/Gafgyt Post Brute Force Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/fuckyou/xd."; startswith; fast_pattern;
http.user_agent;
content:"wget/"; startswith; nocase;
http.host;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
threshold:type both,track by_src, count 30, seconds 60;
target:src_ip;
Raw source ET EXPLOIT Observed Mirai/Gafgyt Post Brute Force 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 -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT Observed Mirai/Gafgyt Post Brute Force Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/fuckyou/xd."; startswith; fast_pattern;
    http.user_agent;
    content:"wget/"; startswith; nocase;
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    threshold:type both,track by_src, count 30, seconds 60;
    reference:url,isc.sans.edu/diary/rss/29304;
    reference:md5,512d5c2ba6b14f732061fc2f28a72f72;
    classtype:misc-attack;
    sid:2042956; rev:1;
    metadata:attack_target Linux_Unix, created_at 2022_12_16, deployment Perimeter, malware_family Mirai, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_16;
    target:src_ip;
)

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