LWA-2026-11283 confirmed malware

hunterone-build-probe-9210@1.0.0

Malicious code in hunterone-build-probe-9210 (npm)

T1059.007 · JavaScriptT1082 · System Information DiscoveryT1552.001 · Credentials In FilesT1005 · Data from Local SystemT1041 · Exfiltration Over C2 ChannelT1071.001 · Web Protocols

Analysis

The package's preinstall and postinstall hooks run probe.js, which collects the hostname, working directory, user id, platform, the full environment-variable set, /proc/self/environ, the root directory listing, network-interface details, the output of `id`, and the contents of ~/.npmrc, then POSTs this JSON to webhook[.]site at path /22508080-b099-4ec3-8ab7-7354af2886a9/buildenv. Reading ~/.npmrc and dumping environment variables exposes npm tokens and cloud credentials to the remote host.

analyzed by
Leitwacht
first seen
Aug 14, 2026, 06:48 PM
analyzed
Aug 14, 2026, 06:49 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.