MAL-2026-12268

Dashboard / Malicious Package / MAL-2026-12268

MAL-2026-12268

Summary: Malicious code in tinkoff-statist-browser-typed-client-mb.product.tgeofencing (npm)

Details: Source: amazon-inspector (471fb9b5c8d45abc59ffda97063561b4882d28109c9959c717fbcd0d9f25c00d) On require() of this package, index.js loads _platform.js which assembles remote hostnames at runtime by concatenating fragmented string arrays to hide them from static scanners. The resolved hosts include oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, and tin/tina/ldr/win.dl.well1.site, with a DNS-TXT chunked base64 fallback channel. The module downloads an opaque binary via https.get, writes it to /tmp or %TEMP% under disguised names impersonating.NET diagnostics (dotnet_diag_<hex>.exe,.cache_<hex>), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A sibling file lib/telemetry.js ships the same dropper shape (child_process require string-split as require("child_"+"process"), chmodSync via fs["chmod"+"Sync"], cp.spawn("/bin/sh", ["-c", filePath+" &"])) as a staged secondary payload, though it is not reached from index.js in this version. The fetched-and-executed binaries, obfuscated destinations, disguised filenames, and DNS-TXT fallback do not match the package's declared Tgeofencing purpose. The package name also impersonates a Tinkoff internal-scope package, consistent with a dependency-confusion lure. Source: ghsa-malware (9a8e9909e4bd7a28f3fcc975bd5a7786e6f79f0d8c8626e185ddf36ab49d49e9) 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.

References: https://www.npmjs.com/package/tinkoff-statist-browser-typed-client-mb.product.tgeofencing/v/20.9.6, https://github.com/advisories/GHSA-rg3c-9vx6-5mfh