ET INFO DYNAMIC_DNS HTTP Request to a *.dyndns.* domain

Query · suricata

flow:established,to_server;
http.host;
content:".dyndns."; fast_pattern;
content:!"checkip."; depth:8;
content:!"update."; depth:7;
pcre:"/\.dyndns\.(biz|info|org|tv)$/";
Raw source ET INFO DYNAMIC_DNS HTTP Request to a *.dyndns.* domain · 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 -> $EXTERNAL_NET any (
    msg:"ET INFO DYNAMIC_DNS HTTP Request to a *.dyndns.* domain";
    flow:established,to_server;
    http.host;
    content:".dyndns."; fast_pattern;
    content:!"checkip."; depth:8;
    content:!"update."; depth:7;
    pcre:"/\.dyndns\.(biz|info|org|tv)$/";
    classtype:bad-unknown;
    sid:2013097; rev:16;
    metadata:attack_target Client_and_Server, created_at 2011_06_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_12_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1568, mitre_technique_name Dynamic_Resolution;
)

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