registry / Data exfiltration / uploader-frontend-legacy
uploader-frontend-legacy
Enterprise-grade utilities with enhanced validation and compatibility layer
This report shows the evidence for uploader-frontend-legacy@9.9.11, the only known version.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiConcrete install-time, obfuscated host-fingerprint exfiltration is present and unrelated to the advertised utility package. This is malicious behavior, not a benign network helper.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
npm install (and any runtime import of index.js)
Impact
Leaks local username, hostname, project-directory name, and timestamp to a remote DNS domain.
Mechanism
Obfuscated DNS-based host-fingerprint exfiltration
Attack narrative
The install lifecycle runs index.js, which suppresses errors while importing lib/core.js. That obfuscated module obtains the local OS username, hostname, and current working directory basename, then encodes them with a timestamp into a DNS resolve4 query beneath oob.sl4x0.xyz. The same behavior also runs whenever the package main entrypoint is imported.
AI rationale
Concrete install-time, obfuscated host-fingerprint exfiltration is present and unrelated to the advertised utility package. This is malicious behavior, not a benign network helper.
Evidence
package.jsonindex.jslib/core.jslib/b02e30.jslib/6ad264.jssrc/network.js
Network endpoints1
oob.sl4x0.xyz
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json runs `node index.js` during install.
- index.js silently imports lib/core.js before exporting utilities.
- lib/core.js collects OS username, hostname, and current-directory basename.
- lib/core.js exfiltrates the collected values through DNS to oob.sl4x0.xyz.
- lib/b02e30.js and lib/6ad264.js obfuscate the DNS and system API calls.
Evidence against
- src/network.js is a user-invoked generic HTTP utility; it has no fixed endpoint.
- No shell execution, file writes, or payload download were found.
Behavioral surface
CryptoDynamicRequireEnvironmentVarsNetwork
HighEntropyStringsObfuscated
Source & flagged code
3 flagged · loading sourcepackage.jsonView file
•scripts.install = node index.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgindex.jsView file
1'use strict';
L2: try { require('./lib/core'); } catch (e) {}
L3:
Medium
src/network.jsView file
•matchType = malicious_source_fingerprint_signature
signature = 526a1294236312cf
signatureType = suspicious_hashes
sourceLabel = final_verdict:malicious
matchedPackage = nms-dashboard-js@9.9.11
matchedPath = src/network.js
matchedIdentity = npm:bm1zLWRhc2hib2FyZC1qcw:9.9.11
similarity = 1.000
shingleOverlap = 7
summary = package final verdict is malicious
Findings
3 High4 Medium2 Low
HighInstall Time Lifecycle Scriptspackage.json
HighObfuscated
HighKnown Malware Source Fingerprint Signaturesrc/network.js
MediumDynamic Requireindex.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowHigh Entropy Strings
Affected versions and remediation
This report applies to uploader-frontend-legacy@9.9.11.
The versions list below shows the verdict for each recorded version.
- Avoid installing uploader-frontend-legacy@9.9.11. 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.