ET EXPLOIT_KIT Observed DNS Query to ClickFix Domain in Domain (nxtbook .com) in DNS Lookup

Query · suricata

dns.query; dotprefix;
content:".nxtbook.com"; nocase; endswith;
threshold:type limit,count 1,seconds 300,track by_src;
Raw source ET EXPLOIT_KIT Observed DNS Query to ClickFix Domain in Domain (nxtbook .com) in DNS Lookup · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
#alert dns $HOME_NET any -> any any (
#    msg:"ET EXPLOIT_KIT Observed DNS Query to ClickFix Domain in Domain (nxtbook .com) in DNS Lookup";
#    dns.query; dotprefix;
#    content:".nxtbook.com"; nocase; endswith;
#    threshold:type limit,count 1,seconds 300,track by_src;
#    classtype:trojan-activity;
#    sid:2060822; rev:3;
#    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, tag compromised_website, 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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