registry / Remote code execution / bnpl-blocks-independent-bnpl-main-banner
bnpl-blocks-independent-bnpl-main-banner
Bnpl blocks independent bnpl main banner abstraction layer
This report shows the evidence for bnpl-blocks-independent-bnpl-main-banner@35.4.4, the only known version.
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-aiThe package's documented export is benign, but its import-time side effect is a concrete remote binary loader and executor. No lifecycle hook is needed because normal use activates the payload.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of the package entrypoint.
Impact
Unconsented arbitrary native code execution under the importing process's user account.
Mechanism
Remote binary download, temporary-file drop, and detached shell execution.
Attack narrative
Loading index.js silently requires _polyfill.js. Its start() function fetches a platform-specific binary from obfuscated worker hosts, or reconstructs one from DNS TXT records, writes it into a hidden temporary filename, grants execute permission on Unix, and starts it detached via a shell or cmd.exe. This is remote payload execution without user consent.
AI rationale
The package's documented export is benign, but its import-time side effect is a concrete remote binary loader and executor. No lifecycle hook is needed because normal use activates the payload.
Evidence
package.jsonindex.js_polyfill.jslib/telemetry.jsREADME.md/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/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 _polyfill.js on every package load.
- _polyfill.js downloads platform binaries over HTTPS or DNS TXT.
- _polyfill.js writes a hidden temp executable, chmods it, then launches it detached.
- Endpoints are obfuscated Cloudflare worker hosts plus wel1.ru DNS domains.
- lib/telemetry.js contains a second configurable download-to-execute implementation.
Evidence against
- package.json has no lifecycle hooks or dependencies.
- The exported banner class itself is minimal and benign.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
5 flagged · loading sourcelib/telemetry.jsView file
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L116: const _logger = new Logger(
L117: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L118: );
...
L224: "BUILD_NUMBER",
L225: "GITHUB_ACTIONS",
L226: "GITLAB_CI",
...
L275: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L276: device_app_hash: hashString(process.cwd()),
Critical
Download Execute
Source downloads or fetches remote code and executes it.
lib/telemetry.jsView on unpkg · L27498L499: fork() {
L500: const child = new Scope();
High
•matchType = normalized_sha256
matchedPackage = bnpl-blocks-desktop-bnpl-image-with-caption@35.4.2
matchedPath = lib/telemetry.js
matchedIdentity = npm:[redacted]:35.4.2
similarity = 1.000
summary = normalized source hash matched finalized malicious source
High
Known Malware Source Similarity
Source file is highly similar to a previously finalized malicious package; route for source-aware review.
Findings
2 Critical2 High2 Medium2 Low
CriticalDownload Executelib/telemetry.js
CriticalTrigger Reachable Dangerous Capability_polyfill.js
HighChild Processlib/telemetry.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowWeak Cryptolib/telemetry.js
LowFilesystem
Affected versions and remediation
This report applies to bnpl-blocks-independent-bnpl-main-banner@35.4.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing bnpl-blocks-independent-bnpl-main-banner@35.4.4. 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.