ET MALWARE Backdoor.Egobot Checkin

Query · suricata

flow:to_server,established;
http.uri;
content:".php?arg1="; nocase; fast_pattern;
content:"&arg2=";
pcre:"/&arg2=((?:[a-f0-9]{32})|(?:[A-Za-z0-9\x2b\x2f]{4})*(?:[A-Za-z0-9\x2b\x2f]{2}==|[A-Za-z0-9\x2b\x2f]{3}=|[A-Za-z0-9\x2b\x2f]{4}))(?:&|$)/i";
Raw source ET MALWARE Backdoor.Egobot Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Backdoor.Egobot Checkin";
    flow:to_server,established;
    http.uri;
    content:".php?arg1="; nocase; fast_pattern;
    content:"&arg2=";
    pcre:"/&arg2=((?:[a-f0-9]{32})|(?:[A-Za-z0-9\x2b\x2f]{4})*(?:[A-Za-z0-9\x2b\x2f]{2}==|[A-Za-z0-9\x2b\x2f]{3}=|[A-Za-z0-9\x2b\x2f]{4}))(?:&|$)/i";
    reference:url,symantec.com/connect/blogs/backdooregobot-how-effectively-execute-targeted-campaign;
    classtype:command-and-control;
    sid:2017600; rev:4;
    metadata:created_at 2013_10_15, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_21;
)

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