ET MALWARE NginxSpy Magic Bytes M2 (Inbound)

Query · suricata

flow:established,to_server;
flowbits:isset,ET.nginxspy;
content:"|e5 cf ff 02 b1 69 20 69 75 15 99 45 20 2e 0a 10 e3 10 b3 70 8d 6d ab 54 52 79 f0 1b 78 5e d1 46|"; fast_pattern;
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE NginxSpy Magic Bytes M2 (Inbound) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE NginxSpy Magic Bytes M2 (Inbound)";
    flow:established,to_server;
    flowbits:isset,ET.nginxspy;
    content:"|e5 cf ff 02 b1 69 20 69 75 15 99 45 20 2e 0a 10 e3 10 b3 70 8d 6d ab 54 52 79 f0 1b 78 5e d1 46|"; fast_pattern;
    reference:url,jsac.jpcert.or.jp/archive/2023/pdf/JSAC2023_2_4_peter-jr-wei_en.pdf;
    classtype:trojan-activity;
    sid:2044123; rev:1;
    metadata:attack_target Web_Server, created_at 2023_02_06, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_06;
    target:dest_ip;
)

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