MAL-2026-15586 Malicious code in originaldevelopmentstelemetry (npm)

The package is advertised as a telemetry utility but its sole exported function, downloadAndRunClient, downloads updater.hta from raw.githubusercontent.com/Acevatex/Testprogram/main/updater.hta (an unrelated personal GitHub account, on the mutable main branch, with no pinning and no hash or signature check), writes it to a temporary path, and launches it via Windows mshta as a detached process. HTA execution grants the remote repository owner arbitrary code execution on any Windows host that invokes this function, and the fetched content can change at any time without a new package release. The stated 'telemetry' purpose is inconsistent with a Windows HTA runner, and the author metadata is a generic 'originaldevelopments' identity.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.