LWA-2026-12255 MAL-2026-16314 ↗ confirmed malware

test1hh235@99.99.99

Malicious code in test1hh235 (npm)

T1059.007 · JavaScriptT1071.001 · Web ProtocolsT1195.002 · Compromise Software Supply Chain

Analysis

The package's preinstall and postinstall hooks both execute index.js, which makes an HTTP GET to hxxp://128[.]199[.]122[.]145/?test1hh235, transmitting the package name to a remote host at install time. The package is a 396-byte stub published at synthetic version 99.99.99 with no repository or description, consistent with a dependency-confusion/version-squat beacon.

analyzed by
Leitwacht
first seen
Sep 18, 2026, 08:40 PM
analyzed
Sep 18, 2026, 08:41 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.