registry / Remote code execution / devplatform-api-endpoint
devplatform-api-endpoint
API client bindings
This report shows the evidence for devplatform-api-endpoint@35.2.9, 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 staged remote-code-execution chain, not ordinary telemetry: it silently retrieves and launches opaque binaries. The absence of install hooks does not mitigate execution on normal package use.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Runtime require/import of the package entrypoint.
Impact
Arbitrary attacker-controlled code execution as the importing process user.
Mechanism
Obfuscated remote binary download/DNS staging followed by detached execution.
Attack narrative
Requiring index.js silently loads _bootstrap.js. Its runtime routine downloads a platform-specific payload from rotating obfuscated hosts or reconstructs one from DNS TXT records, writes it into a temporary directory, marks it executable on Unix, and launches it detached through a shell or cmd.exe. The source provides no integrity verification or legitimate package-facing reason for this hidden execution path.
AI rationale
This is an import-time staged remote-code-execution chain, not ordinary telemetry: it silently retrieves and launches opaque binaries. The absence of install hooks does not mitigate execution on normal package use.
Evidence
package.jsonindex.js_bootstrap.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packagesdk.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 _bootstrap.js on every package load.
- _bootstrap.js downloads platform binaries from obfuscated workers.dev hosts.
- _bootstrap.js falls back to DNS TXT payload delivery via wel1.ru.
- Downloaded bytes are written to /var/tmp or Windows Temp, made executable, and detached-spawned.
- No checksum, signature, or user action gates remote payload execution.
Evidence against
- package.json has no lifecycle scripts.
- Public API in index.js is otherwise minimal.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_bootstrap.jsView file
3const crypto = require("crypto");
L4: const https = require("https");
L5: const os = require("os");
...
L48: const MAX_AGE = 20641;
L49: const _l = (...a) => process.stderr.write("");
L50:
...
L61: const isWin = _p("platform") === "win32";
L62: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L63: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L96: try {
L97: require("dns").resolveTxt(d, (e, rr) => {
L98: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_bootstrap.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _bootstrap.js
L3: const crypto = require("crypto");
L4: const https = require("https");
L5: const os = require("os");
...
L48: const MAX_AGE = 20641;
L49: const _l = (...a) => process.stderr.write("");
L50:
...
L61: const isWin = _p("platform") === "win32";
L62: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L63: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L96: try {
L97: require("dns").resolveTxt(d, (e, rr) => {
L98: 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.
_bootstrap.jsView on unpkg · L3Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_bootstrap.js
CriticalTrigger Reachable Dangerous Capability_bootstrap.js
HighChild Process_bootstrap.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-api-endpoint@35.2.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-api-endpoint@35.2.9. 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.