devplatform-nx-pvmnpm
devplatform-nx-pvm is a confirmed malicious npm package (MAL-2026-12725) that steals credentials and exfiltrates sensitive data (malicious version 35.2.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in devplatform-nx-pvm (npm)
What this malware does
On require() of devplatform-nx-pvm, compat.js fetches a platform-specific binary over HTTPS from hardcoded hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), writes it to /tmp or %TEMP% under a disguised filename (.cache<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmods it 0755, and spawns it detached via /bin/sh or cmd. The C2 hostnames are assembled from split string arrays (e.g. ["oob-worker.cf100-416.work","ers.dev"].join("")) to evade static scanners, and a cover file named analytics_state is used as a run marker. If the HTTPS fetches fail, the code falls back to a DNS TXT covert channel against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru and net.dl.wel1.ru, retrieving a chunk count from c.<domain> and base64-encoded payload chunks from N.<domain>, concatenating and decoding them, then executing the resulting binary. The dropper is skipped when specific telemetry opt-out environment variables are set, further indicating stealth. The package presents itself as a trivial library shim, and index.js unconditionally requires _compat, so installing and importing the package auto-executes the attacker-controlled binary on the installer's machine.
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 devplatform-nx-pvm (version 35.2.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging devplatform-nx-pvm across your stack and pipelines.
If you installed it — respond
devplatform-nx-pvm 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 devplatform-nx-pvm 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 devplatform-nx-pvm 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 devplatform-nx-pvm-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.