ET MALWARE [PTsecurity] DorkBot.Downloader CnC Response

Query · suricata

flow:established,to_client;
dsize:517;
content:"|45 36 27 18|"; depth:4; fast_pattern;
content:"|00 00 00 00 00 00 00 00 00 00 00 00 00 00|"; distance:0;
Raw source ET MALWARE [PTsecurity] DorkBot.Downloader CnC Response · 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 $EXTERNAL_NET 1024: -> $HOME_NET any (
    msg:"ET MALWARE [PTsecurity] DorkBot.Downloader CnC Response";
    flow:established,to_client;
    dsize:517;
    content:"|45 36 27 18|"; depth:4; fast_pattern;
    content:"|00 00 00 00 00 00 00 00 00 00 00 00 00 00|"; distance:0;
    reference:url,www.freebuf.com/articles/terminal/153428.html;
    reference:url,research.checkpoint.com/dorkbot-an-investigation/;
    classtype:command-and-control;
    sid:2025152; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_15, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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