LWA-2026-12080 MAL-2026-16170 ↗ confirmed malware

@biz44/id99-client@1.1.100

Malicious code in @biz44/id99-client (npm)

T1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1053 · Scheduled Task/Job

Analysis

@biz44/id99-client@1.1.100 executes remote code on import. Importing the package (index.js) automatically spawns a detached background `node loader.js` process (PID persisted to a .pid file). loader.js performs an HTTPS GET to hxxps://api[.]npoint[.]io/24c12c4b66a29747764f, reads the `code` field from the returned JSON, base64-decodes it, and executes the decoded string via the Function constructor with require/__dirname/__filename/module/exports in scope — a remote-code-execution dropper whose payload is served remotely rather than shipped in the tarball. It also monkey-patches Module.prototype.require to intercept child_process spawn/execSync calls. The remote endpoint fully controls what code runs on the host.

analyzed by
Leitwacht
first seen
Sep 12, 2026, 05:42 PM
analyzed
Sep 12, 2026, 05:45 PM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.