ET MALWARE Linux/KDefend Checkin

Query · suricata

flow:established,to_server;
content:"c|00|h|00|i|00|n|00|a|00 00 00|"; offset:16; depth:12; fast_pattern;
content:"|20|MB|00|"; within:10;
content:"/proc/stat|00|cpu|00|"; within:21;
Raw source ET MALWARE Linux/KDefend 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/KDefend Checkin";
    flow:established,to_server;
    content:"c|00|h|00|i|00|n|00|a|00 00 00|"; offset:16; depth:12; fast_pattern;
    content:"|20|MB|00|"; within:10;
    content:"/proc/stat|00|cpu|00|"; within:21;
    reference:url,blog.malwaremustdie.org/2015/12/mmd-0045-2015-kdefend-new-elf-threat.html;
    classtype:command-and-control;
    sid:2022219; rev:3;
    metadata:created_at 2015_12_04, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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