registry / Remote code execution / bnpl-blocks-atom-container
bnpl-blocks-atom-container
Bnpl blocks atom container SDK for internal consumers
This report shows the evidence for bnpl-blocks-atom-container@35.7.4, 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-aiThis is an import-time remote-code-execution loader unrelated to the documented SDK API. The opaque payload source, DNS fallback, concealed host construction, and detached execution establish concrete malicious behavior.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime require/import of the package entrypoint
Impact
Unconsented arbitrary native code execution under the importing process user.
Mechanism
remote payload download, temporary-file drop, and detached execution
Attack narrative
Requiring index.js silently loads _adapter.js, which immediately calls main(). It selects a platform payload path, fetches opaque bytes from obfuscated workers.dev hosts or reconstructs them from DNS TXT records, writes them to a temporary location, makes non-Windows payloads executable, and launches them detached through a shell or cmd.exe. The marker only throttles repeat execution.
AI rationale
This is an import-time remote-code-execution loader unrelated to the documented SDK API. The opaque payload source, DNS fallback, concealed host construction, and detached execution establish concrete malicious behavior.
Evidence
package.jsonindex.js_adapter.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packagesdk.dl.wel1.ruext.dl.wel1.rupkg.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 _adapter.js at package load.
- _adapter.js downloads platform binaries from four obfuscated workers.dev hosts.
- DNS TXT fallback reconstructs payloads from *.dl.wel1.ru.
- Downloaded bytes are written into /var/tmp or Windows Temp, chmodded executable, and spawned detached.
- The download-and-execute path runs automatically via main().
- lib/telemetry.js contains a parallel configurable native-payload loader.
Evidence against
- package.json has no lifecycle hooks.
- No direct credential or environment-value exfiltration was found; environment variables only gate execution/temp paths.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_adapter.jsView file
2L3: const https = require("https");
L4: const path = require("path");
...
L45: const STAMP_TTL = 22669;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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");
...
L92: try {
L93: require("dns").resolveTxt(d, (e, rr) => {
L94: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_adapter.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L2:
L3: const https = require("https");
L4: const path = require("path");
...
L45: const STAMP_TTL = 22669;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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");
...
L92: try {
L93: require("dns").resolveTxt(d, (e, rr) => {
L94: 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.
_adapter.jsView on unpkg · L2120
Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_adapter.js
CriticalTrigger Reachable Dangerous Capability_adapter.js
HighChild Process_adapter.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to bnpl-blocks-atom-container@35.7.4.
The versions list below shows the verdict for each recorded version.
- Avoid installing bnpl-blocks-atom-container@35.7.4. 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.