MAL-2026-12440

Dashboard / Malicious Package / MAL-2026-12440

MAL-2026-12440

Summary: Malicious code in sme-rko-finance-front-shared-entity-groups-models (npm)

Details: Source: amazon-inspector (6bde65379e0d7952a0fbdcfc1efe45f1cd08f4752ae4a15f12e5fd0d995a7d12) index.js unconditionally requires./_polyfill.js on load. _polyfill.js constructs C2 hostnames at runtime via Array.join to evade static inspection (assembling `oob-worker.cf10[0-3]-*.workers.dev` mirrors plus a DNS-TXT fallback under `*.dl.well1.site`), fetches a platform-specific binary via https.get, writes it to /tmp or %TEMP% under cover-story filenames (`dotnet_diag_*.exe`, `.cache_*`, `.analytics_state`), sets mode 0755, and spawns it detached via `cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true})` (or the cmd equivalent on Windows). Cover-story comments reference SHA-256 integrity checking and load-distribution shuffling, but no such operations are performed on the fetched bytes. lib/telemetry.js ships duplicate dropper primitives (`Buffer.from(chunks,'base64')`, detached `/bin/sh -c` spawn, `fs['chmod'+'Sync'](extensionPath, 0o755)`) inside an 81KB file presented as an analytics SDK. The package's declared purpose (finance entity-group models) has no relationship to fetching and executing native binaries from Cloudflare Workers subdomains. Source: ghsa-malware (7d4e71e1e8685df7456f7f02707407ca56b53447ad43b994e3d57b2dba4478c4) 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/sme-rko-finance-front-shared-entity-groups-models/v/20.2.8, https://github.com/advisories/GHSA-vfcf-g2jc-xm3x