registry / Malware / @modss/baileys

@modss/baileys

Websocket Whatsapp API for Node.js

This report shows the evidence for @modss/baileys@1.0.2. 4 of 6 known versions are blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

This package appears in our research on the malicious Baileys forks, 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 contains concealed, automatic, and remotely controlled actions that alter the user's WhatsApp account. This is concrete unconsented behavior, not normal media or socket functionality.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

Creating a WhatsApp socket, then either waiting 80 seconds or opening a connection.

Impact

A consumer's WhatsApp account can follow maintainer-selected channels without consent; the remote list can change targets after publication.

Mechanism

Hidden and remote-controlled automatic newsletter FOLLOW requests.

Attack narrative

Socket construction invokes hidden delayed code that follows three Base64-encoded newsletter IDs. Separately, each successful connection downloads a mutable GitHub JSON list and follows every valid entry, recording completed follows under the consumer project's session directory. These account mutations are automatic and unrelated to a caller requesting newsletter follows.

AI rationale

The package contains concealed, automatic, and remotely controlled actions that alter the user's WhatsApp account. This is concrete unconsented behavior, not normal media or socket functionality.

Evidence

lib/Utils/messages-media.jslib/Socket/newsletter.jssession/followed-newsletters.json

Network endpoints2

raw.githubusercontent.com/Dayyy-19/Anu/main/Newsletter.jsons.whatsapp.net

Decision evidence

public snapshot

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

Evidence for block

Hidden delayed code decodes three newsletter identifiers and sends FOLLOW requests without a caller selecting them.
When a WhatsApp connection opens, the package fetches a maintainer-controlled GitHub list and follows every listed newsletter.
The automatic follows persist a cache in the consumer project's session directory.

Evidence against

The install hooks only check the Node major version or read this package's version; they do not perform the newsletter actions.
The media networking and temporary-file code otherwise matches WhatsApp media handling.

Behavioral surface

Source

ChildProcessCryptoFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsUrlStrings

Manifest

GitDependencyWildcardDependency

scanned 105 file(s), 1.43 MB of source, external domains: call.whatsapp.com, mmg.whatsapp.net, raw.githubusercontent.com, saweria.co, stackoverflow.com, web.whatsapp.com, www.whatsapp.com

Oversized source lightweight scan

WAProto/index.js4.07 MB file, sampled 256 KB

ChildProcess

Source & flagged code

8 flagged

package.jsonView file

•scripts.postinstall = node ./postinstall-banner.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•Runtime dependency names matching Node built-ins: fs, os, path, readline

High

Node Builtin Dependency Squat

Package declares a runtime dependency whose name matches a Node built-in module.

package.jsonView on unpkg

lib/WABinary/constants.jsView file

601patternName = google_api_key severity = high line = 601

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L601

601patternName = google_api_key severity = high line = 601

High

Secret Pattern

Google API key in lib/WABinary/constants.js

lib/WABinary/constants.jsView on unpkg · L601

lib/Utils/crypto.jsView file

1//=======================================================// L2: import { createCipheriv, createDecipheriv, createHash, createHmac, randomBytes } from "crypto"; L3: import { KEY_BUNDLE_TYPE } from "../Defaults/index.js"; ... L11: return { L12: private: Buffer.from(privKey), L13: public: Buffer.from(pubKey.slice(1))

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/Utils/crypto.jsView on unpkg · L1

WAProto/index.jsView file

•stage = ast_semantic_analysis; reason = ast_path_work_budget_exceeded; limitedFiles = 5

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

WAProto/index.jsView on unpkg

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 4263226 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

WAProto/index.jsView on unpkg

lib/Utils/messages-media.jsView file

•matchType = normalized_sha256 matchedPackage = @fyxzpediaa/baileys@8.1.1 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGZ5eHpwZWRpYWEvYmFpbGV5cw:8.1.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/Utils/messages-media.jsView on unpkg

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./postinstall-banner.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•Runtime dependency names matching Node built-ins: fs, os, path, readline

High

Node Builtin Dependency Squat

Package declares a runtime dependency whose name matches a Node built-in module.

package.jsonView on unpkg

lib/WABinary/constants.jsView file

601patternName = google_api_key severity = high line = 601

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L601

601patternName = google_api_key severity = high line = 601

High

Secret Pattern

Google API key in lib/WABinary/constants.js

lib/WABinary/constants.jsView on unpkg · L601

lib/Utils/crypto.jsView file

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/Utils/crypto.jsView on unpkg · L1

WAProto/index.jsView file

•stage = ast_semantic_analysis; reason = ast_path_work_budget_exceeded; limitedFiles = 5

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

WAProto/index.jsView on unpkg

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 4263226 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

WAProto/index.jsView on unpkg

lib/Utils/messages-media.jsView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/Utils/messages-media.jsView on unpkg

Findings

6 High5 Medium5 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHigh Secretlib/WABinary/constants.js

HighNode Builtin Dependency Squatpackage.json

HighSemantic Analysis LimitedWAProto/index.js

HighKnown Malware Source Similaritylib/Utils/messages-media.js

HighSecret Patternlib/WABinary/constants.js

MediumNetwork

MediumOversized Source FileWAProto/index.js

MediumStructural Risk Force Deep Review

MediumGit Dependency

MediumWildcard Dependency

LowScripts Present

LowWeak Cryptolib/Utils/crypto.js

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to @modss/baileys@1.0.2.

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

Avoid installing @modss/baileys@1.0.2. 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: 2026-10-16 07:15:08.802Z (UTC).

Source advisory published: 2026-09-03 18:09:54.000Z (UTC).

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

Versions

6 known versions

0.0.1-securitylatestUnknown—AllowUnder ReviewOct 12, 2026, 3:31 PM 0.0.0-stageClean—AllowPublishedOct 12, 2026, 3:30 PM 2.0.0MaliciousMalwareBlockPublishedSep 18, 2026, 10:14 PM 1.0.2shownMaliciousMalwareBlockPublishedSep 2, 2026, 12:32 AM 1.0.1MaliciousMalwareBlockPublishedSep 2, 2026, 12:26 AM 1.0.0MaliciousMalwareBlockPublishedSep 1, 2026, 11:54 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Related packages

Other malware packages

Source & flagged code