ET MALWARE Marai Variant Activity (Inbound)

Query · suricata

flow:established,to_client;
dsize:21;
content:"|00 15 00 00 00 3c 0a 01 d1 de 72 00 18 01 07 05 32 35 35 36 35|"; fast_pattern;
target:dest_ip;
Raw source ET MALWARE Marai Variant Activity (Inbound) · 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-pkt $EXTERNAL_NET 1024: -> $HOME_NET any (
    msg:"ET MALWARE Marai Variant Activity (Inbound)";
    flow:established,to_client;
    dsize:21;
    content:"|00 15 00 00 00 3c 0a 01 d1 de 72 00 18 01 07 05 32 35 35 36 35|"; fast_pattern;
    reference:md5,6f413d0c340d75ed0d97d5e430bae3ea;
    reference:md5,63bf76c58d2d895d01d3fd5e39c597aa;
    reference:url,www.akamai.com/blog/security-research/new-rce-botnet-spreads-mirai-via-zero-days;
    classtype:trojan-activity;
    sid:2049394; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_29, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_29;
    target:dest_ip;
)

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