Malicious code in @xatancchii/velycxbail (npm)
The npm package @xatancchii/velycxbail version 1.1.0 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 authenticated WhatsApp account to attacker-controlled channels without user consent. The targeted channel IDs are obfuscated or dynamically fetched, allowing attackers to change targets post-installation. The malicious code abuses the installer's own WhatsApp session to increase subscribers for attacker channels but does not steal credentials, maintain persistence, or execute arbitrary code.
AI Analysis
Technical Summary
The @xatancchii/velycxbail npm package (version 1.1.0) is a malicious fork of the Baileys WhatsApp Web library that injects a covert subscription action into the WhatsApp socket connection process. Upon connecting, it issues an authenticated 'w:mex' FOLLOW query using the victim's WhatsApp session to subscribe the user to attacker-chosen WhatsApp Channel/Newsletter JIDs. The targeted JIDs are hidden via obfuscation methods such as base64 encoding, XOR, or runtime reconstruction, or fetched dynamically from attacker-controlled remote sources. This mechanism is consistent across a family of over 100 similar malicious forks. The attack leverages the victim's authenticated session to gain subscribers for attacker channels but does not exfiltrate credentials, establish persistence, or execute arbitrary remote code.
Potential Impact
The impact is limited to unauthorized subscription of the victim's WhatsApp account to attacker-controlled channels, potentially leading to unwanted content delivery or spam. There is no credential theft, persistence mechanism, or remote code execution involved. The attack leverages the victim's authenticated session to perform these subscriptions without user knowledge or consent.
Mitigation Recommendations
No official patch or remediation is currently documented for this package. Users should avoid installing or using the @xatancchii/velycxbail package version 1.1.0 and related malicious forks. Review and audit dependencies for suspicious or forked packages, especially those related to Baileys WhatsApp Web library. Consider removing or replacing affected packages with trusted alternatives. Monitor for updates from the package maintainers or npm advisories for any future remediation.
Malicious code in @xatancchii/velycxbail (npm)
Description
The npm package @xatancchii/velycxbail version 1.1.0 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 authenticated WhatsApp account to attacker-controlled channels without user consent. The targeted channel IDs are obfuscated or dynamically fetched, allowing attackers to change targets post-installation. The malicious code abuses the installer's own WhatsApp session to increase subscribers for attacker channels but does not steal credentials, maintain persistence, or execute arbitrary code.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The @xatancchii/velycxbail npm package (version 1.1.0) is a malicious fork of the Baileys WhatsApp Web library that injects a covert subscription action into the WhatsApp socket connection process. Upon connecting, it issues an authenticated 'w:mex' FOLLOW query using the victim's WhatsApp session to subscribe the user to attacker-chosen WhatsApp Channel/Newsletter JIDs. The targeted JIDs are hidden via obfuscation methods such as base64 encoding, XOR, or runtime reconstruction, or fetched dynamically from attacker-controlled remote sources. This mechanism is consistent across a family of over 100 similar malicious forks. The attack leverages the victim's authenticated session to gain subscribers for attacker channels but does not exfiltrate credentials, establish persistence, or execute arbitrary remote code.
Potential Impact
The impact is limited to unauthorized subscription of the victim's WhatsApp account to attacker-controlled channels, potentially leading to unwanted content delivery or spam. There is no credential theft, persistence mechanism, or remote code execution involved. The attack leverages the victim's authenticated session to perform these subscriptions without user knowledge or consent.
Mitigation Recommendations
No official patch or remediation is currently documented for this package. Users should avoid installing or using the @xatancchii/velycxbail package version 1.1.0 and related malicious forks. Review and audit dependencies for suspicious or forked packages, especially those related to Baileys WhatsApp Web library. Consider removing or replacing affected packages with trusted alternatives. Monitor for updates from the package maintainers or npm advisories for any future remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-17383
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6abd30852a4e24523d34012f
Added to database: 09/30/2026, 15:53:41 UTC
Last enriched: 09/30/2026, 16:03:24 UTC
Last updated: 09/30/2026, 22:38:58 UTC
Views: 2
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