ET CHAT IRC USER Likely bot with 0 0 colon checkin

Query · suricata

flow:to_server,established;
content:"USER|20|"; nocase;
content:" 0 0 |3a|"; within:40;
content:"|0a|"; within:40;
flowbits:set,is_proto_irc;

Rule dependencies

Feeds into

  • 15 rules read is_proto_irc · view all
Raw source ET CHAT IRC USER Likely bot with 0 0 colon checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> any 6666:7000 (
    msg:"ET CHAT IRC USER Likely bot with 0 0 colon checkin";
    flow:to_server,established;
    content:"USER|20|"; nocase;
    content:" 0 0 |3a|"; within:40;
    content:"|0a|"; within:40;
    flowbits:set,is_proto_irc;
    classtype:misc-activity;
    sid:2025066; rev:1;
    metadata:created_at 2013_07_13, confidence Medium, signature_severity Informational, updated_at 2019_07_26;
)

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