registry / Remote code execution / devplatform-select-fields
devplatform-select-fields
Devplatform select fields runtime support module
This report shows the evidence for devplatform-select-fields@35.2.6. 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 a concrete import-time staged payload execution chain, unrelated to the stated select-fields functionality. The lack of an npm lifecycle hook does not mitigate execution on normal package import.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any require/import of the package entrypoint
Impact
Unconsented arbitrary native code execution with the importing user's privileges.
Mechanism
import-time remote binary download, drop, and detached execution
Attack narrative
The exported module is a minimal facade, but index.js silently loads _shim.js. On import, the shim fingerprints the platform, requests a platform-specific binary from obfuscated Workers hosts, then falls back to DNS TXT records from .ru domains. It writes the received bytes to a temporary executable path, makes it executable on Unix, and launches it detached through a shell or cmd.exe. The telemetry source contains the same remote-extension pattern but is not needed for the reachable attack chain.
AI rationale
This is a concrete import-time staged payload execution chain, unrelated to the stated select-fields functionality. The lack of an npm lifecycle hook does not mitigate execution on normal package import.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>
Network endpoints8
oob-worker.cf102-baf.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/packageoob-worker.cf103-070.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 import.
- _shim.js downloads platform binaries over HTTPS or DNS TXT.
- _shim.js writes payloads under /var/tmp or Windows Temp, chmods them, then spawns them detached.
- Remote hosts and DNS fallback are obfuscated by string splitting.
Evidence against
- package.json has no lifecycle scripts.
- No credentials or project files are harvested by the inspected shim.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_shim.jsView file
3const os = require("os");
L4: const https = require("https");
L5: const fs = require("fs");
...
L46: const COOLDOWN = 22583;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: if (e || !rr || !rr.length) return r("");
Critical
3Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L3: const os = require("os");
L4: const https = require("https");
L5: const fs = require("fs");
...
L46: const COOLDOWN = 22583;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
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");
...
L89: try {
L90: require("dns").resolveTxt(d, (e, rr) => {
L91: 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 · L3117try {
L118: const cp = require("child_process");
L119: if (isWin) {
High
lib/telemetry.jsView file
•matchType = normalized_sha256
matchedPackage = delivery-ci-storyshots@35.3.6
matchedPath = lib/telemetry.js
matchedIdentity = npm:ZGVsaXZlcnktY2ktc3RvcnlzaG90cw:35.3.6
similarity = 1.000
summary = normalized source hash matched finalized malicious source
High
Known Malware Source Similarity
Source file is highly similar to a previously finalized malicious package; route for source-aware review.
lib/telemetry.jsView on unpkgFindings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_shim.js
CriticalTrigger Reachable Dangerous Capability_shim.js
HighChild Process_shim.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-select-fields@35.2.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-select-fields@35.2.6. 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: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.