ET MALWARE plain-crypto-js RAT Stage 1 C2 Outbound Request


Query · suricata

flow:established,to_server;
http.user_agent;
content:"WindowsPowerShell|2f|";
http.content_type;
content:"application/x-www-form-urlencoded";
http.request_body;
content:"packages.npm.org/product"; fast_pattern;
pcre:"/^[0-2]$/R";
http.method;
content:"POST";
target:src_ip;
Raw source ET MALWARE plain-crypto-js RAT Stage 1 C2 Outbound Request · 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 $HOME_NET any -> any any (
    msg:"ET MALWARE plain-crypto-js RAT Stage 1 C2 Outbound Request";
    flow:established,to_server;
    http.user_agent;
    content:"WindowsPowerShell|2f|";
    http.content_type;
    content:"application/x-www-form-urlencoded";
    http.request_body;
    content:"packages.npm.org/product"; fast_pattern;
    pcre:"/^[0-2]$/R";
    http.method;
    content:"POST";
    reference:url,www.wiz.io/blog/axios-npm-compromised-in-supply-chain-attack;
    reference:md5,089e2872016f75a5223b5e02c184dfec;
    classtype:trojan-activity;
    sid:2068519; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2026_04_01, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2026_04_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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