registry / Malware / @lordmega/baileys / 0.3.41

@lordmega/baileys@0.3.41

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 a concrete, obfuscated runtime path that silently modifies outbound message content with a fixed operator-branded newsletter annotation. No credential theft was found, but this hidden payload tampering warrants blocking. Product guard normalized a non-low false-positive publish_block request to warn-only suspicious.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

Application imports the package and generates qualifying media messages.

Impact

Outbound user content is altered to carry undisclosed operator-controlled newsletter attribution.

Mechanism

Obfuscated branded newsletter metadata injection.

AI rationale

Evidence

lib/Utils/messages.jspackage.jsonengine-requirements.jslib/Utils/messages-media.jslib/Utils/generics.js

Decision evidence

public snapshot

AI called this Suspicious at 92.0% confidence as Malware with medium false-positive risk.

Evidence for warning

Obfuscated runtime code creates a fixed newsletter annotation and injects it into qualifying outbound media.
Brand identifiers and the integrity check are concealed behind an obfuscated string decoder.

Evidence against

The preinstall hook only enforces Node.js 20+ and has no network or file-mutation logic.
Inspected code showed no credential/environment harvesting or AI-agent configuration writes.
Observed network code is WhatsApp media/version functionality or caller-supplied media URLs.

Behavioral surface

Source

ChildProcessCryptoFilesystemNativeBindingsNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedObfuscatedUrlStrings

ManifestNo manifest risk signals triggered.

scanned 123 file(s), 2.02 MB of source, external domains: acs.whatsapp.com, call.whatsapp.com, graph.whatsapp.com, raw.githubusercontent.com, saweria.co, stackoverflow.com, wa.me, web.whatsapp.com, www.whatsapp.com

Source & flagged code

9 flagged

package.jsonView file

•scripts.preinstall = node ./engine-requirements.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

lib/WABinary/constants.jsView file

600patternName = google_api_key severity = high line = 600 matchedText = 'AIzaSyD...Lk',

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L600

•matchType = normalized_sha256 matchedPackage = @lordmega/baileys@0.3.40 matchedPath = lib/WABinary/constants.js matchedIdentity = npm:QGxvcmRtZWdhL2JhaWxleXM:0.3.40 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/WABinary/constants.jsView on unpkg

600patternName = google_api_key severity = high line = 600 matchedText = 'AIzaSyD...Lk',

High

Secret Pattern

Google API key in lib/WABinary/constants.js

lib/WABinary/constants.jsView on unpkg · L600

lib/Utils/validate-connection.jsView file

114pull: false, L115: devicePairingData: { L116: buildHash: appVersionBuf, ... L141: const { details, hmac, accountType } = proto.ADVSignedDeviceIdentityHMAC.decode(deviceIdentityNode.content); L142: let hmacPrefix = Buffer.from([]); L143: if (accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED) { ... L165: ]); L166: account.deviceSignature = Curve.sign(signedIdentityKey.private, deviceMsg); L167: const identity = createSignalIdentity(lid, accountSignatureKey);

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/Utils/validate-connection.jsView on unpkg · L114

lib/Utils/messages.jsView file

1const _0x4c4914=_0x4432;(function(_0x570432,_0xbf376d){const _0x1ab300=_0x4432,_0x44c28a=_0x570432();while(!![]){try{const _0x26cac9=-parseInt(_0x1ab300(0x24b))/0x1*(-parseInt(_0x1...

High

Obfuscated Payload Loader

Source contains an obfuscated payload loader that reconstructs and executes hidden code.

lib/Utils/messages.jsView on unpkg · L1

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 5329879 magicHex = [redacted]

Medium

Oversized Source File

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

WAProto/index.jsView on unpkg

lib/Utils/business.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 2

High

Semantic Analysis Limited

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

lib/Utils/business.jsView on unpkg

lib/Utils/messages-media.jsView file

•matchType = normalized_sha256 matchedPackage = @lordmega/baileys@0.3.40 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGxvcmRtZWdhL2JhaWxleXM:0.3.40 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

9 flagged · loading source

package.jsonView file

•scripts.preinstall = node ./engine-requirements.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

lib/WABinary/constants.jsView file

600patternName = google_api_key severity = high line = 600 matchedText = 'AIzaSyD...Lk',

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L600

High

Known Malware Source Similarity

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

Findings

8 High3 Medium5 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHigh Secretlib/WABinary/constants.js

HighObfuscated Payload Loaderlib/Utils/messages.js

HighObfuscated

HighSemantic Analysis Limitedlib/Utils/business.js

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

HighKnown Malware Source Similaritylib/WABinary/constants.js

HighSecret Patternlib/WABinary/constants.js

MediumNetwork

MediumOversized Source FileWAProto/index.js

MediumStructural Risk Force Deep Review

LowScripts Present

LowWeak Cryptolib/Utils/validate-connection.js

Affected versions and remediation

This report applies to @lordmega/baileys@0.3.41.

See all versions of @lordmega/baileys for other recorded verdicts.

Review the evidence and your use of @lordmega/baileys@0.3.41 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-08-22 16:32:35.384Z (UTC).

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