ET MALWARE Likely Linux/Xorddos.F DDoS Attack Participation (ns3.hostasa.org)

Query · suricata

threshold:type both,track by_src,count 10,seconds 120;
dns.query;
content:"ns3.hostasa.org"; depth:15; fast_pattern; nocase; endswith;
Raw source ET MALWARE Likely Linux/Xorddos.F DDoS Attack Participation (ns3.hostasa.org) · Suricata
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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 MALWARE Likely Linux/Xorddos.F DDoS Attack Participation (ns3.hostasa.org)";
    threshold:type both,track by_src,count 10,seconds 120;
    dns.query;
    content:"ns3.hostasa.org"; depth:15; fast_pattern; nocase; endswith;
    reference:md5,3c49b5160b981f06bd5242662f8d0a54;
    classtype:trojan-activity;
    sid:2021329; rev:5;
    metadata:created_at 2015_06_24, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;
)

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