@bellaxchan/bailtech
A WebSockets library for interacting with Customize WhatsApp.
This report shows the evidence for @bellaxchan/bailtech@1.1.0, the only known version.
AI Security Review
scanned 50m ago · by lpm-firewall-aiThe default socket-construction path reaches newsletter setup, which schedules a follow to a fixed, publisher-selected channel. This is an unauthorized account action, so the package should be blocked.
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 the standard WhatsApp socket; the follow is scheduled for 10 seconds later.
Impact
Uses the connected account to follow a channel selected by the package publisher.
Mechanism
The newsletter socket decodes a fixed newsletter ID and sends a FOLLOW query over WhatsApp’s w:mex protocol without a user request or consent check.
Attack narrative
When the standard socket is created, its constructor chain reaches the newsletter socket, which schedules a follow request for a fixed channel about 10 seconds later and sends it through the user’s WhatsApp connection without consent.
AI rationale
The default socket-construction path reaches newsletter setup, which schedules a follow to a fixed, publisher-selected channel. This is an unauthorized account action, so the package should be blocked.
Evidence
lib/Socket/index.jslib/Socket/communities.jslib/Socket/business.jslib/Socket/messages-send.jslib/Socket/username.jslib/Socket/newsletter.jslib/Socket/mex.jslib/Defaults/index.js
Network endpoints1
wss://web.whatsapp.com/ws/chat
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- Creating the standard socket builds a chain through the messages and username sockets to the newsletter socket.
- The newsletter socket schedules a follow request 10 seconds after construction, decoding a fixed channel ID and making no consent or configuration check.
- The request is sent through WhatsApp’s `w:mex` protocol over the package’s default WhatsApp WebSocket endpoint.
Evidence against
- The package is described as a WhatsApp WebSockets library, and its preinstall script only checks the Node.js version.
- The library exposes ordinary caller-invoked newsletter operations, but that does not explain the scheduled follow to a publisher-selected channel.
Behavioral surface
ChildProcessCryptoFilesystemNetworkShellWebSocket
HighEntropyStringsUrlStrings
Oversized source lightweight scan
WAProto/index.js11.6 MB file, sampled 256 KB
Source & flagged code
9 flaggedpackage.jsonView file
•scripts.preinstall = node ./engine-requirements.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkglib/WABinary/constants.jsView file
600patternName = google_api_key
severity = high
line = 600
High
High Secret
Package contains a high-severity secret pattern.
lib/WABinary/constants.jsView on unpkg · L600600patternName = google_api_key
severity = high
line = 600
High
Secret Pattern
Google API key in lib/WABinary/constants.js
lib/WABinary/constants.jsView on unpkg · L600lib/Utils/validate-connection.jsView file
107pull: false,
L108: devicePairingData: {
L109: buildHash: appVersionBuf,
...
L134: const { details, hmac, accountType } = proto.ADVSignedDeviceIdentityHMAC.decode(deviceIdentityNode.content);
L135: let hmacPrefix = Buffer.from([]);
L136: if (accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED) {
...
L158: ]);
L159: account.deviceSignature = Curve.sign(signedIdentityKey.private, deviceMsg);
L160: const identity = createSignalIdentity(lid, accountSignatureKey);
Low
Weak Crypto
Package source references weak cryptographic algorithms.
lib/Utils/validate-connection.jsView on unpkg · L107WAProto/GenerateStatics.shView file
•path = WAProto/GenerateStatics.sh
kind = build_helper
sizeBytes = 302
magicHex = [redacted]
Medium
Ships Build Helper
Package ships non-JavaScript build or shell helper files.
WAProto/GenerateStatics.shView on unpkgWAProto/index.jsView file
•path = WAProto/index.js
kind = oversized_source_file
sizeBytes = 12145764
magicHex = [redacted]
Medium
Oversized Source File
Package contains source files above the normal full-analysis size ceiling.
WAProto/index.jsView on unpkglib/Utils/business.jsView file
•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 3
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 unpkglib/Utils/messages-media.jsView file
•matchType = normalized_sha256
matchedPackage = @sakataa/baileys@1.0.0
matchedPath = lib/Utils/messages-media.js
matchedIdentity = npm:QHNha2F0YWEvYmFpbGV5cw:1.0.0
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 = 43e6ef5241588b9e
signatureType = suspicious_hashes
sourceLabel = final_verdict:malicious
matchedPackage = @denzz221/baileys@2.0.0
matchedPath = lib/Utils/messages-media.js
matchedIdentity = npm:QGRlbnp6MjIxL2JhaWxleXM:2.0.0
similarity = 1.000
shingleOverlap = 21
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.
lib/Utils/messages-media.jsView on unpkgFindings
6 High4 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
HighHigh Secretlib/WABinary/constants.js
HighSemantic Analysis Limitedlib/Utils/business.js
HighKnown Malware Source Similaritylib/Utils/messages-media.js
HighKnown Malware Source Fingerprint Signaturelib/Utils/messages-media.js
HighSecret Patternlib/WABinary/constants.js
MediumNetwork
MediumShips Build HelperWAProto/GenerateStatics.sh
MediumOversized Source FileWAProto/index.js
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowWeak Cryptolib/Utils/validate-connection.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @bellaxchan/bailtech@1.1.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing @bellaxchan/bailtech@1.1.0. 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: .
Source advisory published: .
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