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;
)