sme-foundation-frame-managernpm
Advisory published Updated
sme-foundation-frame-manager is a confirmed malicious npm package (MAL-2026-12439) that executes malicious code on install (malicious version 20.7.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sme-foundation-frame-manager (npm)
What this malware does
On require/import of the package, index.js unconditionally loads runtime.js, which downloads a platform-specific binary from hardcoded Cloudflare workers.dev endpoints (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked base64 fallback resolved through *.well1.site. The binary is written to /tmp or %TEMP% under deceptive names such as.cache<hex> and dotnet_diag_<hex>.exe, chmod 0755'd, and executed detached via /bin/sh or cmd.exe. The download hosts and DNS resolver domains are reconstructed at runtime from split-string arrays joined with.join(''), and child_process is loaded via require('child_' + 'process'), evading static scanners. No hash or signature verification is performed on the fetched binary.
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 sme-foundation-frame-manager (version 20.7.8).
If you installed it — respond
Remove sme-foundation-frame-manager 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 sme-foundation-frame-manager 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-foundation-frame-manager-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.