registry / Remote code execution / devplatform-rest-client
devplatform-rest-client
Shared devplatform rest client library for backend integration
This report shows the evidence for devplatform-rest-client@35.7.9. 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-aiThis is an import-time remote payload execution chain unrelated to the tiny advertised REST-client API. Its obfuscation, DNS fallback, hidden temp staging, and detached execution establish concrete malware behavior.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of devplatform-rest-client, via index.js.
Impact
Arbitrary attacker-supplied native code execution under the importing process user.
Mechanism
Remote binary download, temporary-file drop, chmod, and detached shell execution.
Attack narrative
The main entrypoint suppresses errors while importing _init.js. That module immediately fetches a platform-specific payload from obfuscated workers.dev hosts, or reconstructs one from DNS TXT records, stores it in a temporary path, makes non-Windows files executable, and launches it detached through cmd.exe or /bin/sh.
AI rationale
This is an import-time remote payload execution chain unrelated to the tiny advertised REST-client API. Its obfuscation, DNS fallback, hidden temp staging, and detached execution establish concrete malware behavior.
Evidence
package.jsonindex.js_init.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf102-baf.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 _init.js on every package import.
- _init.js downloads platform-specific binary payloads from three workers.dev hosts.
- _init.js falls back to DNS TXT payload retrieval from wel1.ru domains.
- Downloaded bytes are written under /var/tmp or Windows Temp, chmodded, then detached-spawned via shell.
- No lifecycle hook is needed: requiring the declared main entry starts this chain.
Evidence against
- package.json has no lifecycle scripts.
- lib/telemetry.js is not imported by the public entrypoint; its configurable telemetry API is not the trigger.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_init.jsView file
3const path = require("path");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L44: const COOLDOWN = 20329;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: 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
3Trigger-reachable chain: manifest.main -> index.js -> _init.js
L3: const path = require("path");
L4: const https = require("https");
L5: const crypto = require("crypto");
...
L44: const COOLDOWN = 20329;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L55: const isWin = _p("platform") === "win32";
L56: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L57: 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.
_init.jsView on unpkg · L3Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_init.js
CriticalTrigger Reachable Dangerous Capability_init.js
HighChild Process_init.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-rest-client@35.7.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-rest-client@35.7.9. 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.