registry / Remote code execution / statist-browser-typed-client-mb.product.mclaccount
statist-browser-typed-client-mb.product.mclaccount
Internal mclaccount module for platform services
This report shows the evidence for statist-browser-typed-client-mb.product.mclaccount@20.2.6. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiDirect source inspection confirms an import-time staged payload downloader and executor. The lack of an install hook does not mitigate execution when the package is imported.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any Node.js require/import resolving main entry index.js.
Impact
Arbitrary attacker-controlled native code execution under the importing process user.
Mechanism
import-time remote binary download, drop, chmod, and detached execution
Attack narrative
At module import, index.js silently requires _loader.js. The loader suppresses errors, avoids repeated execution with a temporary marker, obtains a platform-specific payload from rotating obfuscated HTTPS hosts or DNS TXT records, writes it to a temp path, makes it executable on Unix, and launches it via detached shell/cmd spawn. This is an unconsented remote-code-execution chain.
AI rationale
Direct source inspection confirms an import-time staged payload downloader and executor. The lack of an install hook does not mitigate execution when the package is imported.
Evidence
package.jsonindex.js_loader.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints5
oob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/package/pkg/package
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _loader.js on every package import.
- _loader.js fetches platform payloads from obfuscated workers.dev hosts.
- _loader.js falls back to DNS TXT payload retrieval from dl.well1.site.
- _loader.js writes a downloaded executable to temp storage, chmods it, and detached-spawns it.
- No lifecycle hook is needed: importing the declared main entry triggers this chain.
Evidence against
- package.json has no lifecycle scripts.
- Public Mclaccount API itself is a minimal inert wrapper.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_loader.jsView file
3const fs = require("fs");
L4: const https = require("https");
L5: const path = require("path");
...
L46: const CACHE_TTL = 20866;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_loader.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _loader.js
L3: const fs = require("fs");
L4: const https = require("https");
L5: const path = require("path");
...
L46: const CACHE_TTL = 20866;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
_loader.jsView on unpkg · L3Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_loader.js
CriticalTrigger Reachable Dangerous Capability_loader.js
HighChild Process_loader.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to statist-browser-typed-client-mb.product.mclaccount@20.2.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing statist-browser-typed-client-mb.product.mclaccount@20.2.6. 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.