registry / Remote code execution / devplatform-prettier-config
devplatform-prettier-config
settings manager
This report shows the evidence for devplatform-prettier-config@35.1.3, 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-aiThe documented package role is a configuration loader, but its import path immediately performs covert remote native payload execution. This is concrete malware behavior, not a benign telemetry primitive.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Runtime import/require of devplatform-prettier-config.
Impact
Unconsented arbitrary native code execution in the importing user's environment.
Mechanism
Remote binary retrieval, temporary-file drop, permission change, and detached shell execution.
Attack narrative
Importing index.js invokes _compat.js. Its setup routine obtains a platform-specific binary over HTTPS from obfuscated worker hosts or reconstructs it from DNS TXT records, stores it under a temporary disguised filename, makes it executable on Unix, and launches it detached via /bin/sh or cmd.exe. The telemetry module contains the same download-and-execute primitive, supporting deliberate payload functionality rather than a prettier configuration package.
AI rationale
The documented package role is a configuration loader, but its import path immediately performs covert remote native payload execution. This is concrete malware behavior, not a benign telemetry primitive.
Evidence
package.jsonindex.js_compat.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%\analytics_state%TEMP%\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf99-9b3.workers.devoob-worker.cf100-416.workers.devoob-worker.cf103-070.workers.devoob-worker.cf101-adf.workers.devsdk.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 _compat on every package import.
- _compat.js downloads platform binaries from obfuscated workers.dev hosts.
- _compat.js falls back to DNS TXT payloads from *.dl.wel1.ru.
- Downloaded bytes are written to temp, chmodded, and detached-spawned.
- No lifecycle hook is needed: import-time setup() triggers the chain.
Evidence against
- package.json has no lifecycle scripts.
- index.js otherwise implements a local configuration loader.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_compat.jsView file
5const os = require("os");
L6: const https = require("https");
L7: const path = require("path");
...
L48: const EXPIRE_SEC = 21173;
L49: const _l = (...a) => process.stderr.write("");
L50:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_compat.jsView on unpkg · L55Trigger-reachable chain: manifest.main -> index.js -> _compat.js
L5: const os = require("os");
L6: const https = require("https");
L7: const path = require("path");
...
L48: const EXPIRE_SEC = 21173;
L49: const _l = (...a) => process.stderr.write("");
L50:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: 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.
_compat.jsView on unpkg · L5Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_compat.js
CriticalTrigger Reachable Dangerous Capability_compat.js
HighChild Process_compat.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-prettier-config@35.1.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-prettier-config@35.1.3. 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.