sme-rko-finance-front-operations-widget-implnpm
sme-rko-finance-front-operations-widget-impl is a confirmed malicious npm package (MAL-2026-13651) that executes malicious code on install (malicious version 35.8.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sme-rko-finance-front-operations-widget-impl (npm)
What this malware does
index.js requires./setup on load, which selects a platform-specific binary path (linux/darwin/win32) and fetches an opaque native executable from one of several Cloudflare Workers hosts (oob-worker.cf100-*.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. Destination hostnames are reconstructed at runtime from split-string arrays joined together, evading static string matching. The fetched binary is written to /tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows (names disguised to resemble system caches or.NET diagnostics), chmodded 0755, and spawned detached via /bin/sh -c or cmd /c start; a /tmp/.analytics_state marker suppresses re-execution. lib/telemetry.js carries a second copy of the same spawn/chmod/base64-buffer pattern. The dropper is framed as 'analytics' telemetry with a DISABLE_TELEMETRY-style opt-out as cover. No pinning, no hash verification, and the delivery hosts do not match the declared publisher of a 'Build and deployment tools' widget package.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for sme-rko-finance-front-operations-widget-impl (version 35.8.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging sme-rko-finance-front-operations-widget-impl across your stack and pipelines.
If you installed it — respond
Remove sme-rko-finance-front-operations-widget-impl from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If sme-rko-finance-front-operations-widget-impl was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks sme-rko-finance-front-operations-widget-impl before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks sme-rko-finance-front-operations-widget-impl-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.