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;)