ET MALWARE Linux.Trojan.IptabLex Variant Checkin

Query · suricata

flow:to_server,established;
dsize:157;
content:"|77|"; depth:1;
pcre:"/^[\x01\x03\x08\x09\x0b]\x00/R";
content:"|20 40 20|"; distance:0;
content:"Hz"; nocase; within:15;
Raw source ET MALWARE Linux.Trojan.IptabLex Variant Checkin · 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 Linux.Trojan.IptabLex Variant Checkin";
    flow:to_server,established;
    dsize:157;
    content:"|77|"; depth:1;
    pcre:"/^[\x01\x03\x08\x09\x0b]\x00/R";
    content:"|20 40 20|"; distance:0;
    content:"Hz"; nocase; within:15;
    reference:md5,019765009f7142a89af15aaaac7400cc;
    reference:url,blog.malwaremustdie.org/2014/06/mmd-0025-2014-itw-infection-of-elf.html;
    classtype:command-and-control;
    sid:2021050; rev:1;
    metadata:created_at 2015_05_04, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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