registry / Remote code execution / devplatform-api-v2-resources
devplatform-api-v2-resources
service client SDK
This report shows the evidence for devplatform-api-v2-resources@35.3.8, 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-aiDirect source inspection confirms an automatic download-and-execute payload chain, not ordinary telemetry. The malicious behavior is reachable whenever the package is imported.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require/import of devplatform-api-v2-resources.
Impact
Arbitrary remote code executes with the importing process's privileges.
Mechanism
import-time remote binary download, drop, chmod, and detached execution
Attack narrative
The exported entrypoint catch-imports _polyfill.js. Its top-level run() fetches a binary from obfuscated workers.dev hosts, or reconstructs one from DNS TXT records at wel1.ru domains. It writes the bytes to a temporary executable path, sets executable permissions on Unix, and spawns it detached through /bin/sh or cmd.exe. This is an unconsented import-time remote-code-execution chain.
AI rationale
Direct source inspection confirms an automatic download-and-execute payload chain, not ordinary telemetry. The malicious behavior is reachable whenever the package is imported.
Evidence
package.jsonindex.js_polyfill.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.cf101-adf.workers.devoob-worker.cf100-416.workers.devoob-worker.cf103-070.workers.devsdk.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 _polyfill on every package import.
- _polyfill.js downloads platform binaries from obfuscated workers.dev hosts.
- _polyfill.js falls back to DNS TXT payloads from wel1.ru domains.
- _polyfill.js writes payloads to /var/tmp or Temp, chmods them, then launches detached shell/process.
- No lifecycle hook is needed: import-time run() performs the chain.
Evidence against
- package.json has no lifecycle scripts.
- The documented SDK entrypoint itself is otherwise minimal.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading sourcelib/telemetry.jsView file
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L123: const _logger = new Logger(
L124: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L125: );
...
L231: "BUILD_NUMBER",
L232: "GITHUB_ACTIONS",
L233: "GITLAB_CI",
...
L282: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L283: device_app_hash: hashString(process.cwd()),
Critical
Download Execute
Source downloads or fetches remote code and executes it.
lib/telemetry.jsView on unpkg · L27501L502: fork() {
L503: const child = new Scope();
High
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L123: const _logger = new Logger(
L124: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L125: );
...
L231: "BUILD_NUMBER",
L232: "GITHUB_ACTIONS",
L233: "GITLAB_CI",
...
L282: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L283: device_app_hash: hashString(process.cwd()),
Low
Weak Crypto
Findings
2 Critical1 High3 Medium3 Low
CriticalDownload Executelib/telemetry.js
CriticalTrigger Reachable Dangerous Capability_polyfill.js
HighChild Processlib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowWeak Cryptolib/telemetry.js
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to devplatform-api-v2-resources@35.3.8.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-api-v2-resources@35.3.8. 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.