ET INFO DYNAMIC_DNS HTTP Request to a *.mfc-krsulin .ru domain

Query · suricata

flow:established,to_server;
http.host;
content:".mfc-krsulin.ru"; endswith; fast_pattern;
Raw source ET INFO DYNAMIC_DNS HTTP Request to a *.mfc-krsulin .ru 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 *.mfc-krsulin .ru domain";
    flow:established,to_server;
    http.host;
    content:".mfc-krsulin.ru"; endswith; fast_pattern;
    reference:url,freedns.afraid.org/domain/registry/page-9.html;
    classtype:bad-unknown;
    sid:2070825; rev:1;
    metadata:attack_target Client_and_Server, created_at 2026_07_04, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_07_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1568, mitre_technique_name Dynamic_Resolution;
)

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