Malicious code in @bellaxchuu/xtrxbails (npm)
The npm package @bellaxchuu/xtrxbails (version 0.0.8) is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's WhatsApp account to attacker-controlled channels using the victim's authenticated session. The targeted channel IDs are obfuscated or dynamically fetched, preventing easy detection. The malicious code does not steal credentials, establish persistence, or execute arbitrary remote code.
AI Analysis
Technical Summary
The @bellaxchuu/xtrxbails package (version 0.0.8) contains malicious code that modifies the WhatsApp Web socket connection to issue an authenticated 'w:mex' FOLLOW query to attacker-chosen WhatsApp Channel/Newsletter JIDs. This causes the victim's WhatsApp account to subscribe to channels without their consent. The targeted JIDs are hidden using various obfuscation methods or fetched dynamically from attacker-controlled remote sources. The attack leverages the installer's authenticated WhatsApp session but does not exfiltrate credentials or execute arbitrary code. This behavior is consistent across a family of over 100 near-identical malicious forks of the Baileys library.
Potential Impact
Victims unknowingly subscribe their WhatsApp accounts to attacker-controlled channels, which could be used for spam, misinformation, or other unwanted content dissemination. The attack abuses the victim's authenticated session but does not compromise credentials or allow remote code execution. There is no persistence or direct data exfiltration involved.
Mitigation Recommendations
No official patch or remediation is currently documented for this package. Users should avoid installing or using the @bellaxchuu/xtrxbails package version 0.0.8 and related malicious forks. Review and audit dependencies for suspicious or forked packages before installation. Since this is a client-side package, removing or replacing the malicious package will stop the unwanted subscription behavior.
Malicious code in @bellaxchuu/xtrxbails (npm)
Description
The npm package @bellaxchuu/xtrxbails (version 0.0.8) is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's WhatsApp account to attacker-controlled channels using the victim's authenticated session. The targeted channel IDs are obfuscated or dynamically fetched, preventing easy detection. The malicious code does not steal credentials, establish persistence, or execute arbitrary remote code.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The @bellaxchuu/xtrxbails package (version 0.0.8) contains malicious code that modifies the WhatsApp Web socket connection to issue an authenticated 'w:mex' FOLLOW query to attacker-chosen WhatsApp Channel/Newsletter JIDs. This causes the victim's WhatsApp account to subscribe to channels without their consent. The targeted JIDs are hidden using various obfuscation methods or fetched dynamically from attacker-controlled remote sources. The attack leverages the installer's authenticated WhatsApp session but does not exfiltrate credentials or execute arbitrary code. This behavior is consistent across a family of over 100 near-identical malicious forks of the Baileys library.
Potential Impact
Victims unknowingly subscribe their WhatsApp accounts to attacker-controlled channels, which could be used for spam, misinformation, or other unwanted content dissemination. The attack abuses the victim's authenticated session but does not compromise credentials or allow remote code execution. There is no persistence or direct data exfiltration involved.
Mitigation Recommendations
No official patch or remediation is currently documented for this package. Users should avoid installing or using the @bellaxchuu/xtrxbails package version 0.0.8 and related malicious forks. Review and audit dependencies for suspicious or forked packages before installation. Since this is a client-side package, removing or replacing the malicious package will stop the unwanted subscription behavior.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-17350
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6abd30852a4e24523d3401ba
Added to database: 09/30/2026, 15:53:41 UTC
Last enriched: 09/30/2026, 16:07:21 UTC
Last updated: 10/01/2026, 04:47:50 UTC
Views: 4
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