registry / Remote code execution / bnpl-blocks-desktop-bnpl-separator
bnpl-blocks-desktop-bnpl-separator
Reusable bnpl blocks desktop bnpl separator components
This report shows the evidence for bnpl-blocks-desktop-bnpl-separator@35.5.8, 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-aiThis is concrete import-time remote-code execution unrelated to the declared component package. The absence of install hooks does not mitigate execution on ordinary package use.
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
Arbitrary attacker-controlled native code executes under the importing user's privileges.
Mechanism
Remote payload download, temporary drop, and detached execution
Attack narrative
Requiring index.js silently requires _shim.js, which immediately calls run(). It selects a platform-specific endpoint, fetches a binary from obfuscated Workers hosts or reconstructs it from DNS TXT records, writes it under /var/tmp or the Windows temp directory, marks it executable on Unix, and launches it detached through a shell or cmd.exe. The payload is not verified against an expected hash.
AI rationale
This is concrete import-time remote-code execution unrelated to the declared component package. The absence of install hooks does not mitigate execution on ordinary package use.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js
Network endpoints7
oob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packagesdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.dl.wel1.ru
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _shim.js on every package require.
- _shim.js downloads platform binaries from worker hosts or DNS TXT.
- _shim.js writes the payload to a temp path, chmods it, then detached-spawns it.
- The remote payload has no enforced integrity validation.
Evidence against
- package.json has no lifecycle scripts.
- No AI-agent configuration mutation was found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_shim.jsView file
2L3: const https = require("https");
L4: const path = require("path");
...
L44: const EXPIRE_SEC = 22150;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: if (e || !rr || !rr.length) return r("");
Critical
2Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L2:
L3: const https = require("https");
L4: const path = require("path");
...
L44: const EXPIRE_SEC = 22150;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: 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.
_shim.jsView on unpkg · L2118
Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to bnpl-blocks-desktop-bnpl-separator@35.5.8.
The versions list below shows the verdict for each recorded version.
- Avoid installing bnpl-blocks-desktop-bnpl-separator@35.5.8. 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.