registry / Malware / @sanzoffc/baileys

@sanzoffc/baileys

Websocket Whatsapp API for Node.js

This report shows the evidence for @sanzoffc/baileys@3.0.4. 1 of 3 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 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

This is concealed, remote-controlled use of an authenticated WhatsApp session to alter subscriptions without a caller request. No install hook is present, but the runtime behavior is concrete malicious account abuse.

Static reason

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

Trigger

Creating and connecting a WhatsApp socket.

Impact

The package causes unrequested actions on the user's WhatsApp account and lets a remote list choose the targets.

Mechanism

Obfuscated remote list retrieval followed by automatic newsletter subscriptions.

Attack narrative

The normal connection path calls socketConnect. It decodes and fetches a GitHub-hosted list, then issues WhatsApp newsletter follow queries for each returned identifier. Separately, newsletter initialization invokes loadBase, which decodes another remote URL and follows every supplied ID. Both operations are delayed and concealed, preventing the user from knowingly approving account actions.

AI rationale

Evidence

lib/Socket/socket.jslib/Utils/messages-media.jslib/Types/Newsletter.js

Network endpoints3

raw.githubusercontent.comraw.githubusercontentusercontent.com@s.whatsapp.net

Decision evidence

public snapshot

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

Evidence for block

On socket connection, concealed character codes build a remote GitHub URL and fetch its JSON.
The fetched identifiers are automatically sent as WhatsApp newsletter queries after a delay.
Newsletter code identifies that query ID as the follow operation.
A second concealed URL fetches a remote identifier list and follows every listed newsletter.

Evidence against

package.json has no preinstall, install, or postinstall hook.
The manifest entry point is the expected library module.

Behavioral surface

Source

ChildProcessCryptoFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsUrlStrings

Manifest

GitDependencyWildcardDependency

scanned 100 file(s), 1.40 MB of source, external domains: call.whatsapp.com, mmg.whatsapp.net, raw.githubusercontent.com, saweria.co, stackoverflow.com, web.whatsapp.com, www.whatsapp.com

Source & flagged code

9 flagged

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

lib/Utils/messages-media.jsView file

8import { Readable, Transform } from "stream"; L9: import { exec } from "child_process"; L10: import { Boom } from "@hapi/boom"; ... L35: hasher.update(data); L36: if (!fileWriteStream.write(data)) { L37: await once(fileWriteStream, "drain"); ... L67: if (typeof buffer === "string") { L68: buffer = Buffer.from(buffer.replace("data:;base64,", ""), "base64"); L69: } ... L206: } L207: if (urlStr.startsWith("http://") || urlStr.startsWith("https://")) { L208: return { stream: await getHttpStream(item.url, opts), type: "remote" };

High

Base64 Obscured Url

Source decodes a Base64-obscured HTTP endpoint at runtime.

lib/Utils/messages-media.jsView on unpkg · L8

•matchType = normalized_sha256 matchedPackage = @fyxzpediaa/baileys@8.0.15 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGZ5eHpwZWRpYWEvYmFpbGV5cw:8.0.15 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

•matchType = malicious_source_fingerprint_signature signature = 3e762135ddf9ab1e signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @fyxzpediaa/baileys@8.0.15 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGZ5eHpwZWRpYWEvYmFpbGV5cw:8.0.15 similarity = 1.000 shingleOverlap = 14 summary = package final verdict is malicious

High

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

package.jsonView file

•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

Source & flagged code

9 flagged · loading source

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.js

Findings

7 High5 Medium5 Low

HighHigh Secretlib/WABinary/constants.js

HighBase64 Obscured Urllib/Utils/messages-media.js

HighNode Builtin Dependency Squatpackage.json

HighSemantic Analysis LimitedWAProto/index.js

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

HighKnown Malware Source Fingerprint Signaturelib/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

Low

Affected versions and remediation

This report applies to @sanzoffc/baileys@3.0.4.

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

Avoid installing @sanzoffc/baileys@3.0.4. 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: 2026-10-12 16:45:07.597Z (UTC).

Source advisory published: 2026-09-18 04:29:33.000Z (UTC).

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

Versions

3 known versions

0.0.1-securitylatestUnknown—AllowUnder ReviewOct 12, 2026, 3:55 PM 0.0.0-stageClean—AllowPublishedOct 12, 2026, 3:54 PM 3.0.4shownMaliciousMalwareBlockPublishedSep 5, 2026, 4:20 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Behavioral surface

Related packages

Other malware packages

Source & flagged code