sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-implnpm
sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-impl is a confirmed malicious npm package (MAL-2026-13657) that typosquats a legitimate package to trick installs (malicious version 35.8.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-impl (npm)
What this malware does
On require() of the package, index.js loads bootstrap.js which downloads a platform-specific native binary from Cloudflare Workers subdomains assembled at runtime from split-string arrays (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS-TXT covert-channel fallback to *.dl.wel1.ru. The fetched bytes are written to /tmp/.cache<rnd> on Unix or %TEMP%\dotnet_diag_<rnd>.exe on Windows (a filename that mimics a Microsoft.NET diagnostic tool), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe with stdio ignored and unref(). Execution is gated by a state flag at /tmp/.analytics_state. Destination hostnames are constructed from fragmented substrings (e.g. ["oob","-worker.c","f99","-9b3.wor","kers.d","ev"].join("")) to evade static analysis, and the surrounding code is framed as runtime analytics/telemetry with DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK opt-out variables — a cover story inconsistent with dropping and executing an unsigned native binary from Workers subdomains and a.ru fallback. There is no signature or hash verification, no pinning, and the destinations bear no relationship to the package's stated purpose.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind 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-payments-currency-payment-actions-operations-repeat-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-payments-currency-payment-actions-operations-repeat-impl across your stack and pipelines.
If you installed it — respond
sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-impl is a typosquat — you almost certainly intended a legitimately-named package. Remove sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-impl, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If sme-rko-finance-front-payments-currency-payment-actions-operations-repeat-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-payments-currency-payment-actions-operations-repeat-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-payments-currency-payment-actions-operations-repeat-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.