MAL-2026-12843

Dashboard / Malicious Package / MAL-2026-12843

MAL-2026-12843

Summary: Malicious code in bigops-telephony-ui-adapter (npm)

Details: Source: amazon-inspector (95bba7270d3de4aa970aefb0ef6b0017f4d9663219dd0eccbb44b5d3c9dd6f6a) The package main `index.js` unconditionally requires `_init.js`, which on module load selects a platform-specific asset (linux_x64, linux_arm64, darwin, win32), downloads an opaque binary via `https.get` from runtime-assembled hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), writes it to a temp path under a disguised name (`dotnet_diag_*.exe`, `.cache_*`), chmods 0o755 on POSIX, and detach-spawns it via `cmd /c start` on Windows or `/bin/sh -c '<path> &'` on POSIX with `{detached:true, stdio:'ignore'}`. Destination hostnames are reassembled from split string fragments (e.g. `['oob-worker.cf100-416','.workers.','dev'].join('')`, `['sdk','.dl.wel1','.ru'].join('')`) to evade static scans, and a DNS TXT fallback channel reconstructs the payload from base64 chunks via `resolveTxt` when HTTPS delivery fails. A `DISABLE_TELEMETRY` environment variable serves as a cover-story opt-out. The fetched bytes are not publisher-hosted, are not pinned by hash or signature, and are executed detached from the parent process. Any consumer that requires this package receives arbitrary attacker-controlled code execution on the host. Source: ghsa-malware (5ba703443c47c5c41ded8a9d2c7823860a9abc84a2f9fc763d780af8668b88db) 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/bigops-telephony-ui-adapter/v/35.6.4, https://github.com/advisories/GHSA-4jx7-3p75-j9r8