MAL-2026-13282 Malicious code in dolyame-boxy-atom-bnpl-badge (npm)

On require() of dolyame-boxy-atom-bnpl-badge, helpers.js fetches an OS-specific native binary from hardcoded Cloudflare Workers mirrors (oob-worker.cf100-.workers.dev, oob-worker.cf102-.workers.dev, oob-worker.cf103-.workers.dev, oob-worker.cf199-.workers.dev) with a DNS-TXT chunked fallback through sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. Destination hostnames and API names are assembled via array-join fragments (e.g. ['oob-worker.cf103-070.wo','rkers','.dev'].join(''); require('child'+'process'); 'chmod'+'Sync') to evade static matching. The downloaded bytes are written to a disguised path in /tmp or %TEMP% as dotnet_diag_<hex>.exe or.cache_<hex>, chmod 0755 on POSIX, then spawned detached with stdio ignored via cp.spawn('/bin/sh',['-c', fp+' &'],{detached:true,stdio:'ignore'}).unref(). No hash or signature verification. Execution is gated by a.analytics_state marker file and by env vars named DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK to impersonate a telemetry opt-out. The dropper is unrelated to the package's stated BNPL-badge purpose. A sibling lib/telemetry.js frames the chain as analytics as a cover story.

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.