registry / Remote code execution / nxify-unic
nxify-unic
Nxify unic runtime support module
This report shows the evidence for nxify-unic@20.3.2. 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 remote-code-execution chain with opaque payload delivery and stealth-oriented error suppression. The lack of an npm lifecycle hook does not mitigate runtime execution on normal package use.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of nxify-unic
Impact
Unconsented arbitrary native code execution as the importing process user.
Mechanism
remote payload download, temporary-file drop, and detached execution
Attack narrative
On import, index.js silently requires _shim.js. The shim selects a platform payload, fetches it from obfuscated HTTPS hosts or DNS TXT records, writes it to /var/tmp or Windows Temp, makes it executable on Unix, and launches it detached through a shell or cmd.exe. A timestamp file suppresses repeated runs.
AI rationale
This is a concrete, import-time remote-code-execution chain with opaque payload delivery and stealth-oriented error suppression. The lack of an npm lifecycle hook does not mitigate runtime execution on normal package use.
Evidence
package.jsonindex.js_shim.jslib/telemetry.js
Network endpoints7
oob-worker.cf100-416.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packagetin.dl.well1.sitetina.dl.well1.siteldr.dl.well1.sitewin.dl.well1.site
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 payloads from three obfuscated workers.dev hosts.
- _shim.js falls back to TXT-record payload retrieval from well1.site domains.
- Downloaded bytes are written under /var/tmp or Windows Temp, chmodded, then detached-spawned.
- Execution is silent, rate-limited, and errors are suppressed.
Evidence against
- package.json has no lifecycle scripts.
- No AI-agent configuration or credential-harvesting path was found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_shim.jsView file
5const fs = require("fs");
L6: const https = require("https");
L7: const path = require("path");
...
L42: const CACHE_TTL = 20385;
L43: const _l = (...a) => process.stderr.write("");
L44:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: 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
5Trigger-reachable chain: manifest.main -> index.js -> _shim.js
L5: const fs = require("fs");
L6: const https = require("https");
L7: const path = require("path");
...
L42: const CACHE_TTL = 20385;
L43: const _l = (...a) => process.stderr.write("");
L44:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: 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 · L5116try {
L117: const cp = require("child_process");
L118: if (isWin) {
Findings
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 nxify-unic@20.3.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing nxify-unic@20.3.2. 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.