@reason-machines/cli-darwin-arm64@0.2.414: Manual Review npm

AI Security Review

scanned 4d ago · by lpm-firewall-ai

The manifest has no install lifecycle hook, and the inspected JavaScript excerpt does not establish harmful agent-configuration changes. The native executable analysis is explicitly incomplete, so its runtime behavior remains unresolved.

Static reason

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

Trigger

Running the packaged native CLI executable.

Impact

A malicious attack cannot be established from the inspected evidence, but the executable cannot be cleared.

Mechanism

The available analysis does not establish which embedded code is reachable or whether other native behavior exists.

AI rationale

The manifest has no install lifecycle hook, and the inspected JavaScript excerpt does not establish harmful agent-configuration changes. The native executable analysis is explicitly incomplete, so its runtime behavior remains unresolved.

Evidence

bin/reason.lpm-inspection-u6ZVmb/0-53b4b41fc933.txt

Decision evidence

public snapshot

AI called this Manual Review at 96.0% confidence as Unknown with medium false-positive risk.

AI review observations

The manifest identifies this as a Darwin ARM64 CLI package and contains no lifecycle hooks or JavaScript entrypoint.
The bundled sandbox runtime names .mcp.json and Claude command and agent paths, but the inspected excerpt does not establish a harmful mutation.
The native executable analysis contains only bounded embedded source candidates and states that it cannot establish loader reachability or rule out other native behavior.

Evidence against

No concrete malicious behavior was confirmed in the inspected source.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystem

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

Manifest

NoLicense

scanned 1 file(s), 523 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=ux((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 ur,dirname as Lx}from"path";import{fileURLToPath as Ox}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: ${a.message}`,{level:"er... L57: `)),e.end(cx(s))}function Tl(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function lx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${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=ux((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 ur,dirname as Lx}from"path";import{fileURLToPath as Ox}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: ${a.message}`,{level:"er... L57: `)),e.end(cx(s))}function Tl(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function lx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${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=ux((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-darwin-arm64@0.2.410 matchedPath = bin/runtime/srt/sandbox-runtime.mjs matchedIdentity = npm:[redacted]:0.2.410 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

bin/Background/Reason.app/Contents/MacOS/ReasonBackgroundIdentityView file

•path = bin/Background/Reason.[redacted] kind = native_binary sizeBytes = 55536 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

bin/Background/Reason.app/Contents/MacOS/ReasonBackgroundIdentityView on unpkg

package.jsonView file

1{ "name": "@reason-machines/cli-darwin-arm64", "version": "0.2.414", "description": "Reason CLI native binary for darwin-arm64", "os": [ "darwin" ], "cpu": [ "arm64" ], "files": [ "bin", "README.md"

Low

Suspicious Lifecycle Evidence

The manifest identifies this as a Darwin ARM64 CLI package and contains no lifecycle hooks or JavaScript entrypoint.

package.jsonView on unpkg · L1

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=ux((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 ur,dirname as Lx}from"path";import{fileURLToPath as Ox}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: ${a.message}`,{level:"er... L57: `)),e.end(cx(s))}function Tl(e){return Buffer.from([5,e,0,1,0,0,0,0,0,0])}function lx(e){return new Promise((t)=>{let n=Buffer.alloc(0),r=(s)=>{e.off("data",a),clearTimeout(i),t(s)... ... L60: mux backend dial failed (${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=ux((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 ur,dirname as Lx}from"path";import{fileURLToPath as Ox}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

4 High3 Medium5 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

MediumEnvironment Vars

MediumShips Native Binarybin/Background/Reason.app/Contents/MacOS/ReasonBackgroundIdentity

MediumStructural Risk Force Deep Review

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

LowNo License

LowSuspicious Lifecycle Evidencepackage.json

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

More from @reason-machines

Behavioral surface

Related packages

More from @reason-machines

Source & flagged code