bpm-foundation-sentrynpm
bpm-foundation-sentry is a confirmed malicious npm package (MAL-2026-13117) that opens a backdoor for remote access (malicious version 35.8.7). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in bpm-foundation-sentry (npm)
What this malware does
The package's main entry (index.js) unconditionally requires runtime.js, which downloads an opaque platform-specific binary at load time from hardcoded Cloudflare Workers subdomains (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback under sdk.dl.wel1.ru, writes it to /var/tmp or %TEMP% under disguised names (.cache<hex>, dotnet_diag_<hex>.exe,.analytics_state), sets mode 0755, and detached-spawns it via /bin/sh -c or cmd.exe /c start /b. C2 hostnames, the child_process import, and fs.chmodSync are assembled from split-string arrays and concatenation to evade string scanners. Cover-story naming and opt-out env checks present the behavior as telemetry, but the fetched bytes are opaque native code from anonymous *.workers.dev hosts unrelated to any declared publisher.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for bpm-foundation-sentry (version 35.8.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging bpm-foundation-sentry across your stack and pipelines.
If you installed it — respond
bpm-foundation-sentry establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If bpm-foundation-sentry 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 bpm-foundation-sentry 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 bpm-foundation-sentry-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.