MAL-2026-13286 Malicious code in dolyame-boxy-atom-bnpl-dolyame-button (npm)

On require, adapter.js selects a platform-specific endpoint, fetches an opaque binary over HTTPS from one of several Cloudflare Workers mirrors (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), writes it to /tmp/.cache<hex> or the Windows TEMP directory as dotnet_diag_<hex>.exe, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. Mirror hostnames are reconstructed from split string arrays joined at runtime to evade static scanners. If HTTPS retrieval fails, the module falls back to a DNS TXT covert channel under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru and net.dl.wel1.ru: it reads a count TXT at c.<domain>, pulls N base64-chunked TXT records from <i>.<domain>, concatenates and base64-decodes them, and feeds the resulting bytes into the same write-chmod-spawn pipeline. A lockfile at /tmp/.analytics_state throttles re-execution. lib/telemetry.js is a companion 81 KB module presenting itself as an observability SDK and contains the same write-chmod-spawn pattern with concatenation-obfuscated API names (require("child_" + "process"), fs["chmod" + "Sync"]). The disguised filenames, obfuscated destination reconstruction, and DNS-TXT covert-channel transport are deliberate evasion of egress filtering and scanning.

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.