ET MALWARE TeamPCP CanisterWorm - Namastex npm Campaign - Exfiltration

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /v1/telemetry HTTP/1.1";
http.content_type;
content:"application/json";
http.header;
content:"x-seesion-id|3a 20|"; nocase;
content:"x-request-signature|3a 20|"; fast_pattern; nocase;
Raw source ET MALWARE TeamPCP CanisterWorm - Namastex npm Campaign - Exfiltration · Suricata
Esc
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 TeamPCP CanisterWorm - Namastex npm Campaign - Exfiltration";
    flow:established,to_server;
    http.request_line;
    content:"POST /v1/telemetry HTTP/1.1";
    http.content_type;
    content:"application/json";
    http.header;
    content:"x-seesion-id|3a 20|"; nocase;
    content:"x-request-signature|3a 20|"; fast_pattern; nocase;
    reference:url,socket.dev/blog/namastex-npm-packages-compromised-canisterworm;
    classtype:trojan-activity;
    sid:2068941; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2026_04_23, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2026_04_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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