MAL-2026-11510 Malicious code in beaver-ui-layout (npm)

The package is advertised as a React UI layout library but on require('beaver-ui-layout') loads bridge.js, which reconstructs hostnames from array-joined string fragments to build Cloudflare Workers URLs (oob-worker.cf100/cf101/cf102-*.workers.dev) and a DNS-TXT covert-channel fallback under *.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp or the Windows TEMP directory under disguised names such as dotnet_diag.exe and.cache_, chmods it 0755, and spawns it detached via cp.spawn('/bin/sh', ['-c', fp+' &']) or spawn('cmd',…). A marker file (analytics_state/.analytics_state) is used to gate re-execution, and DISABLE_TELEMETRY/DO_NOT_TRACK environment variables are checked as a cover story. lib/telemetry.js bundles the same dropper primitives (base64 chunk buffer, chmod 755, /bin/sh spawn, require('child_'+'process') split-string obfuscation) as an alternate variant. Importing this package results in arbitrary attacker-controlled code executing on the installer's host.

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.