registry / internallib_v275 / 1.0.3

internallib_v275@1.0.3

AI Security Review

scanned 3d ago · by lpm-firewall-ai

The package exposes a function that downloads and executes a reverse-shell payload.

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

Remote code executes with the calling process's permissions and can establish shell access.

Mechanism

child_process.exec launches Bash, which retrieves remote shell code with curl and pipes it into sh.

Attack narrative

Calling the package's exported command function starts a shell that downloads a payload from reverse-shell.sh and immediately executes it. The URL specifies 10.0.49.106:443 as the reverse-shell destination. Execution is caller-triggered, but the source establishes a concrete remote payload execution path.

AI rationale

The inspected entrypoint directly downloads and executes a reverse-shell payload. This concrete attack behavior supports blocking despite the absence of an install hook.

Evidence

package.jsonindex.js

Network endpoints1

reverse-shell.sh/10.0.49.106:443

OSV advisory

OpenSSF/OSV

Advisory

MAL-2026-17510

index.js exports a `command` function that invokes `/bin/bash -c` to curl a reverse-shell payload from reverse-shell.sh targeting the hardcoded host 10.0.49.106:443 and pipes the response to `sh`, yielding interactive remote shell access on the installer host whenever the exported API is called. The fetch-and-execute path has no pinning, no hash verification, and runs over an unauthenticated network retrieval. package.json also declares a self-referential dependency on `internallib_v275@^1.0.0`, a dependency-confusion shape consistent with a package targeting an internal registry namespace so that resolution against the public registry pulls this backdoor into internal builds. ## Source: ghsa-malware (7e73d7869fce3c750cb3bdd88167659dd362d142c79a91f25408221ebacdf3e6) 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.

internallib_v275@1.0.3

AI Security Review

OSV advisory

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Source & flagged code