ET MALWARE Backdoor.Win32.Dorkbot.AR Join IRC channel

Query · suricata

flow:to_server,established;
content:"NICK n|7B|"; nocase;
pcre:"/^\S{2,3}\x7c\S+?[au]\x7D\w{2,11}\x0d?\x0a/Ri";
Raw source ET MALWARE Backdoor.Win32.Dorkbot.AR Join IRC channel · 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 tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Backdoor.Win32.Dorkbot.AR Join IRC channel";
    flow:to_server,established;
    content:"NICK n|7B|"; nocase;
    pcre:"/^\S{2,3}\x7c\S+?[au]\x7D\w{2,11}\x0d?\x0a/Ri";
    reference:url,microsoft.com/security/portal/threat/encyclopedia/entry.aspx?Name=Worm%3AWin32/Dorkbot.AR;
    reference:md5,7e76c7db8706511fc59508af4aef27fa;
    classtype:trojan-activity;
    sid:2016768; rev:4;
    metadata:created_at 2013_04_18, signature_severity Major, updated_at 2019_07_26;
)

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