ET MALWARE Magecart Loader Javascript

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.server;
content:"DDoS-Guard"; nocase; bsize:10; fast_pattern;
file.data;
content:"|09 09 09 09|";
byte_test:4,=,151587081,20,relative;
content:"function"; distance:0;
content:"|09 09 09 09|";
byte_test:4,=,151587081,7000,relative;
Raw source ET MALWARE Magecart Loader Javascript · 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 http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Magecart Loader Javascript";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.server;
    content:"DDoS-Guard"; nocase; bsize:10; fast_pattern;
    file.data;
    content:"|09 09 09 09|";
    byte_test:4,=,151587081,20,relative;
    content:"function"; distance:0;
    content:"|09 09 09 09|";
    byte_test:4,=,151587081,7000,relative;
    reference:url,malwarebytes.com/blog/threat-intelligence/2023/01/crypto-inspired-magecart-skimmer-surfaces-via-digital-crime-haven;
    classtype:bad-unknown;
    sid:2043311; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_01_17, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_17, reviewed_at 2024_10_14;
)

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