ET INFO Observed DNS Query to Online Document Sharing Service (onlyoffice .com)

Query · suricata

dns.query; dotprefix;
content:".onlyoffice.com"; nocase; endswith;
threshold:type limit,count 1,seconds 300,track by_src;
target:src_ip;
Raw source ET INFO Observed DNS Query to Online Document Sharing Service (onlyoffice .com) · 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 INFO Observed DNS Query to Online Document Sharing Service (onlyoffice .com)";
    dns.query; dotprefix;
    content:".onlyoffice.com"; nocase; endswith;
    threshold:type limit,count 1,seconds 300,track by_src;
    classtype:misc-activity;
    sid:2062767; rev:1;
    metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2025_06_04, deployment Perimeter, confidence High, signature_severity Informational, tag TA_Abused_Service, updated_at 2025_06_04;
    target:src_ip;
)

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