MAL-2026-12453

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Source: amazon-inspector (9f8aa3f187231d6a828b8d3cd99eee3f0b3dbb95abecc8ebf1add2c393f59b15)

On require() of the package, support.js assembles remote hostnames from split-string array joins (e.g. ["oob-wo","rker.cf1","02-baf.workers.","dev"].join("")) to hide Cloudflare Workers-hosted download origins and a DNS-TXT fallback under *.dl.well1.site. It selects a platform-specific path, downloads an opaque native binary over HTTPS, writes it to /tmp or %TEMP% under disguised names (dotnetdiag<hex>.exe,.cache<hex>), chmods it 0o755 on POSIX, and spawns it detached (detached:true, stdio:"ignore",.unref()) via /bin/sh -c or cmd.exe /c start /b. A marker file.analyticsstate throttles re-download to ~6.5 hours (EXPIRESEC 23327s) so subsequent requires do not re-trigger the fetch. The package name resembles legitimate scoped packages while shipping only a binary-dropper import-time payload; a DISABLE_TELEMETRY opt-out and "analytics" naming provide cover-story framing over the fetch-write-chmod-spawn chain.

Source: ghsa-malware (ad6959e1bd9f23751057c2c7d61d91cc3a6bf7dff795ad045271dabaac5c77eb)

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.