tinkoff-boxy-desktop-mgm-product-filternpm
tinkoff-boxy-desktop-mgm-product-filter is a confirmed malicious npm package (MAL-2026-12229) that steals credentials and exfiltrates sensitive data (malicious version 20.1.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in tinkoff-boxy-desktop-mgm-product-filter (npm)
What this malware does
The package's index.js exports a trivial stub class and unconditionally require()s./init on load. init.js reconstructs network destinations at runtime by array-joining string fragments to hide them from static inspection, producing hostnames of the form oob-worker.cf<NNN>-<NNN>.workers.dev and a DNS-TXT fallback under *.dl.well1.site (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site) whose base64 chunks are reassembled into a payload. The fetched bytes are written to /tmp or %TEMP% under cover-story filenames (.cache<hex>, dotnet_diag<hex>.exe), chmod 0o755, and spawned detached via /bin/sh -c "<path> &" or cmd /c start. Execution is suppressed when DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env vars are set and a marker file at /tmp/.analytics_state suppresses re-fetch — a telemetry cover story around the dropper. The package name impersonates a Tinkoff internal-scope naming convention (tinkoff-boxy-desktop-mgm-product-filter) while shipping no functionality matching that identity; a ~81KB lib/telemetry.js is not referenced by the public API. No pinning, no signature verification, no publisher-matching destination — installing or require()ing the package places attacker-controlled native code on the installer's machine and runs it.
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
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for tinkoff-boxy-desktop-mgm-product-filter (version 20.1.8). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging tinkoff-boxy-desktop-mgm-product-filter across your stack and pipelines.
If you installed it — respond
tinkoff-boxy-desktop-mgm-product-filter is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If tinkoff-boxy-desktop-mgm-product-filter 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 tinkoff-boxy-desktop-mgm-product-filter 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 tinkoff-boxy-desktop-mgm-product-filter-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.