sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-modelsnpm
Advisory published Updated
sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-models is a confirmed malicious npm package (MAL-2026-13656) 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-classic-payment-actions-operations-repeat-models (npm)
What this malware does
On require, index.js loads _bridge.js which selects a platform-specific asset path (linux_x64, linux_arm64, darwin, win32), downloads bytes from a rotating set of Cloudflare Workers endpoints (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT discovery fallback under *.dl.wel1.ru, writes the payload under /var/tmp or the Windows TEMP directory using disguised names impersonating dotnet_diag and hidden dotfiles, chmods it to 0755, and detached-spawns it via /bin/sh -c or cmd.exe /c start /b. Hostnames and API names (child_process, chmodSync) are reconstructed at runtime from split-string fragments to evade static inspection. lib/telemetry.js contains a parallel dropper (base64 chunk assembly, split-property fs.chmodSync, cp.spawn of /bin/sh) reachable from the main entry, redundantly staging payload delivery. A filesystem stamp implements run-once deduplication.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Search your lockfiles and build artifacts for sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-models (version 35.8.1).
If you installed it — respond
sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-models is a typosquat — you almost certainly intended a legitimately-named package. Remove sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-models, 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-classic-payment-actions-operations-repeat-models was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-models-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.