Which versions of internallib_v756 are malicious?

The following npm versions of internallib_v756 are flagged malicious: 1.0.7. Treat any of these as compromised.

How do I remediate internallib_v756 if I installed it?

internallib_v756 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.

I already installed internallib_v756 — how do I know if it already compromised me?

If internallib_v756 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.

Is internallib_v756 part of a known attack campaign?

Yes — internallib_v756 is associated with the IN-MAL-2026-017623 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find internallib_v756 across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for internallib_v756 (version 1.0.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging internallib_v756 across your stack and pipelines.

Malicious package

internallib_v756npm

internallib_v756 is a confirmed malicious npm package (MAL-2026-13928) that opens a backdoor for remote access (malicious version 1.0.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in internallib_v756 (npm)

MAL-2026-13928

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall internallib_v756

What this malware does

index.js (the package main entry) synchronously invokes execSync to spawn /bin/bash -i with stdio redirected through /dev/tcp/10.0.74.63/4444, opening an interactive reverse shell to a hardcoded remote address whenever the module is loaded. The shell spawn is top-level code, so it fires immediately on require()/import of the package with no gating, granting the operator of 10.0.74.63 interactive command execution on the installer's host.

Malicious versions

1 flagged

1.0.7

Indicators of compromise (SHA-256)

fb9f2ca94c3bf4bd18f73321d08c08130180a3bb66237a4f05f326d0adcf6e06

Detection & response playbook

Backdoor / remote access

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for internallib_v756 (version 1.0.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging internallib_v756 across your stack and pipelines.
If you installed it — respond
internallib_v756 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 internallib_v756 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 internallib_v756 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

No. internallib_v756 on npm has been identified as a malicious package (version 1.0.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-017623

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks internallib_v756-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

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