ET MALWARE Java/Jacksbot Check-in

Query · suricata

flow:established,to_server;
content:"|00 2d 00 68 00 20 00 32 00 66 00|";
pcre:"/^(?:4\x00[1-9a-f]|5\x00[\da])/Rs";
content:"|00 33 00 61 00|"; within:5;
Raw source ET MALWARE Java/Jacksbot Check-in · 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 Java/Jacksbot Check-in";
    flow:established,to_server;
    content:"|00 2d 00 68 00 20 00 32 00 66 00|";
    pcre:"/^(?:4\x00[1-9a-f]|5\x00[\da])/Rs";
    content:"|00 33 00 61 00|"; within:5;
    reference:md5,6d93fc6132ae6938013cdd95354bff4e;
    classtype:trojan-activity;
    sid:2017983; rev:3;
    metadata:created_at 2014_01_17, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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