sme-rko-finance-front-operations-widget-domainnpm
sme-rko-finance-front-operations-widget-domain is a confirmed malicious npm package (MAL-2026-13650) 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-domain (npm)
What this malware does
On require() of this package, index.js loads _compat.js, which downloads a platform-specific native binary from Cloudflare Workers subdomains under oob-worker.cf*.workers.dev and, on failure, reassembles the payload from base64-encoded DNS TXT records under *.dl.wel1.ru. Destination hostnames and fallback resolver domains are hidden by joining split string fragments at runtime to evade static inspection. The downloaded binary is written to /var/tmp or %TEMP% under a disguised name (.cache_<hex> or dotnet_diag_<hex>.exe), chmodded to 0755, and spawned detached via /bin/sh -c or cmd.exe. Naming choices (analytics_state, DISABLE_TELEMETRY, dotnet_diag_*.exe) and a cooldown stamp present the behavior as benign telemetry while the code fetches and executes attacker-controlled native code on every consumer that imports the package. The DNS-TXT fallback provides a covert delivery channel that bypasses HTTP egress controls.
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-domain (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-domain across your stack and pipelines.
If you installed it — respond
Remove sme-rko-finance-front-operations-widget-domain 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-domain 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-domain 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-domain-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.