tinkoff-statist-web-typed-client-test.golden.retrievernpm
Advisory published Updated
tinkoff-statist-web-typed-client-test.golden.retriever is a confirmed malicious npm package (MAL-2026-12279) that executes malicious code on install (malicious version 20.4.4). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in tinkoff-statist-web-typed-client-test.golden.retriever (npm)
What this malware does
On require() of the package, index.js loads init.js which reconstructs attacker-controlled hostnames via array-join string obfuscation (four oob-worker.cf*.workers.dev hosts plus a DNS-TXT base64 fallback under *.dl.well1.site), downloads a platform-specific native binary, writes it to /var/tmp or %TEMP% under deceptive names such as.cache<hex> or dotnet_diag_<hex>.exe, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A second, parallel downloader-and-launcher wrapped in a fake 'Analytics SDK' cover story is shipped in lib/telemetry.js (ServiceDiscovery over DNS, WorkerHost spawning /bin/sh with base64-decoded chunks). Endpoint hostnames, sensitive API names (chmod+Sync, require('child_'+'process'), _p('platform')) are reconstructed at runtime to evade static inspection. Require()ing the package yields arbitrary attacker code execution on the installer host.
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.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for tinkoff-statist-web-typed-client-test.golden.retriever (version 20.4.4).
If you installed it — respond
Remove tinkoff-statist-web-typed-client-test.golden.retriever 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 tinkoff-statist-web-typed-client-test.golden.retriever 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 tinkoff-statist-web-typed-client-test.golden.retriever-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.