@reason-machines/cli-win32-arm64@0.2.523: Manual Review npm

AI Security Review

scanned 18h ago · by lpm-firewall-ai

The manifest has no lifecycle scripts, and the flagged JavaScript behavior inspected is consistent with sandbox proxy setup. The packaged native executable remains materially unresolved because its trusted analysis is limited, so the source evidence does not support either a clean or malicious verdict.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

Running the packaged Windows ARM64 CLI; the executable's activation and behavior could not be established from the available analysis.

Impact

No concrete impact was confirmed; native executable behavior remains unresolved.

Mechanism

The offline report identifies embedded source candidates but does not establish their reachability or account for other native behavior.

AI rationale

The manifest has no lifecycle scripts, and the flagged JavaScript behavior inspected is consistent with sandbox proxy setup. The packaged native executable remains materially unresolved because its trusted analysis is limited, so the source evidence does not support either a clean or malicious verdict.

Evidence

.lpm-inspection-EydvXh/0-d3a14b76bd25.txtbin/reason.exebin/runtime/srt/sandbox-runtime.mjs

Decision evidence

public snapshot

AI called this Manual Review at 93.0% confidence as Unknown with medium false-positive risk.

AI review observations

The manifest identifies this as a Windows ARM64 native CLI package and declares no lifecycle scripts.
The runtime source contains loopback proxy setup consistent with sandbox operation.
The native executable analysis contains only bounded embedded-source windows and cannot establish loader reachability or rule out other native behavior.

Evidence against

The inspected manifest has no install-time lifecycle hook.
The flagged runtime code includes loopback proxy setup, which is consistent with sandbox functionality.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystem

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

Manifest

NoLicense

scanned 1 file(s), 524 KB of source, external domains: 127.0.0.1

Source & flagged code

6 flagged

bin/runtime/srt/sandbox-runtime.mjsView file

60mux backend dial failed (${d}) L61: `)}),l.on("error",()=>c.destroy()),l.once("close",()=>c.destroy()),c.once("close",()=>l.destroy()),l.pipe(c),c.pipe(l)}let o=px((l)=>{a.add(l),l.once("close",()=>a.delete(l)),l.on(... L62: `).filter(Boolean);if(y===1)return[];throw Error(`ripgrep failed with exit code ${y}: ${f}`)}import{join as dr,dirname as Vx}from"path";import{fileURLToPath as Fx}from"url";import*...

High

Child Process

Package source references child process execution.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L60

55\r L56: `)}}),t.on("request",async(r,i)=>{r.on("error",(a)=>{C(`Client request error: ${a.message}`,{level:"error"})}),i.on("error",(a)=>{C(`Client response error: ${a.message}`,{level:"er... L57: `)),e.end(fx(s))}function _l(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function dx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${d}) L61: `)}),l.on("error",()=>c.destroy()),l.once("close",()=>c.destroy()),c.once("close",()=>l.destroy()),l.pipe(c),c.pipe(l)}let o=px((l)=>{a.add(l),l.once("close",()=>a.delete(l)),l.on(... L62: `).filter(Boolean);if(y===1)return[];throw Error(`ripgrep failed with exit code ${y}: ${f}`)}import{join as dr,dirname as Vx}from"path";import{fileURLToPath as Fx}from"url";import*

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L55

47\r L48: Connection blocked by network allowlist`);return}if(s||i.destroyed){i.destroy();return}let R=_t(E)??E;if(e.mitmCA&&(e.shouldTerminateTLS?.(R,k)??!0)){i.write(`HTTP/1.1 200 Connecti... L49: \r ... L55: \r L56: `)}}),t.on("request",async(r,i)=>{r.on("error",(a)=>{C(`Client request error: ${a.message}`,{level:"error"})}),i.on("error",(a)=>{C(`Client response error: ${a.message}`,{level:"er... L57: `)),e.end(fx(s))}function _l(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function dx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${d}) L61: `)}),l.on("error",()=>c.destroy()),l.once("close",()=>c.destroy()),c.once("close",()=>l.destroy()),l.pipe(c),c.pipe(l)}let o=px((l)=>{a.add(l),l.once("close",()

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L47

•matchType = normalized_sha256 matchedPackage = @reason-machines/cli-linux-x64-musl@0.2.517 matchedPath = bin/runtime/srt/sandbox-runtime.mjs matchedIdentity = npm:[redacted]:0.2.517 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.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 6d5c8eac552fc83c signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @reason-machines/cli-win32-x64@0.2.418 matchedPath = bin/runtime/srt/sandbox-runtime.mjs matchedIdentity = npm:[redacted]:0.2.418 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.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg

bin/native/win32/prebuilds/win32-arm64/win32-platform.nodeView file

•path = [redacted]-arm64/win32-platform.node kind = native_binary sizeBytes = 9216 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

bin/native/win32/prebuilds/win32-arm64/win32-platform.nodeView on unpkg

Source & flagged code

6 flagged · loading source

bin/runtime/srt/sandbox-runtime.mjsView file

60mux backend dial failed (${d}) L61: `)}),l.on("error",()=>c.destroy()),l.once("close",()=>c.destroy()),c.once("close",()=>l.destroy()),l.pipe(c),c.pipe(l)}let o=px((l)=>{a.add(l),l.once("close",()=>a.delete(l)),l.on(... L62: `).filter(Boolean);if(y===1)return[];throw Error(`ripgrep failed with exit code ${y}: ${f}`)}import{join as dr,dirname as Vx}from"path";import{fileURLToPath as Fx}from"url";import*...

High

Child Process

Package source references child process execution.

bin/runtime/srt/sandbox-runtime.mjsView on unpkg · L60

55\r L56: `)}}),t.on("request",async(r,i)=>{r.on("error",(a)=>{C(`Client request error: ${a.message}`,{level:"error"})}),i.on("error",(a)=>{C(`Client response error: ${a.message}`,{level:"er... L57: `)),e.end(fx(s))}function _l(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function dx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${d}) L61: `)}),l.on("error",()=>c.destroy()),l.once("close",()=>c.destroy()),c.once("close",()=>l.destroy()),l.pipe(c),c.pipe(l)}let o=px((l)=>{a.add(l),l.once("close",()=>a.delete(l)),l.on(... L62: `).filter(Boolean);if(y===1)return[];throw Error(`ripgrep failed with exit code ${y}: ${f}`)}import{join as dr,dirname as Vx}from"path";import{fileURLToPath as Fx}from"url";import*

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

Findings

5 High3 Medium4 Low

HighChild Processbin/runtime/srt/sandbox-runtime.mjs

HighSame File Env Network Executionbin/runtime/srt/sandbox-runtime.mjs

HighCommand Output Exfiltrationbin/runtime/srt/sandbox-runtime.mjs

HighKnown Malware Source Similaritybin/runtime/srt/sandbox-runtime.mjs

HighKnown Malware Source Fingerprint Signaturebin/runtime/srt/sandbox-runtime.mjs

MediumEnvironment Vars

MediumShips Native Binarybin/native/win32/prebuilds/win32-arm64/win32-platform.node

MediumStructural Risk Force Deep Review

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

LowNo License

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

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Behavioral surface

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Source & flagged code