ET EXPLOIT_KIT Observed ClickFix Domain (connection .click) in TLS SNI

Query · suricata

flow:established,to_server;
tls.sni; dotprefix;
content:".connection.click"; endswith; fast_pattern;
Raw source ET EXPLOIT_KIT Observed ClickFix Domain (connection .click) in TLS SNI · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT Observed ClickFix Domain (connection .click) in TLS SNI";
    flow:established,to_server;
    tls.sni; dotprefix;
    content:".connection.click"; endswith; fast_pattern;
    classtype:trojan-activity;
    sid:2060866; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_03_13, deployment Perimeter, former_category MALWARE, malware_family ClickFix, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2025_03_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1102, mitre_technique_name Web_Service;
)

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