MAL-2026-13291 Malicious code in dolyame-boxy-atom-bnpl-text (npm)

On require() of the package, index.js loads helpers.js which immediately runs an init() routine that fetches a platform-specific binary over HTTPS from a set of hosts reassembled at runtime via string split-and-join: oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, and sdk.dl.wel1.ru, with a DNS TXT chunked-base64 fallback for host discovery. The fetched bytes are written to /var/tmp or %TEMP% under disguised names (.cache<hex> or dotnet_diag_<hex>.exe), chmod'd 0755, and spawned detached via /bin/sh -c "<path> &" or cmd /c start. No hash or signature check is performed. A sibling file lib/telemetry.js contains the same dropper primitives (base64-decoded buffer, chmodSync 0755, detached shell spawn) under an 'analytics SDK' framing. Hostnames are reconstructed from arrays such as ["oob-worker.cf101-adf.worker","s.","de","v"].join("") and ['sdk.dl.','wel','1.ru'].join("") to evade static scanners. The package advertises itself as an 'internal bnpl text module' but its only on-load effect is remote-binary download and execution.

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.