Malicious code in fb-hr-sites--boxified-form-meetup-subcribe (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b8aa49d4f3babc81510150e766a38674e971d7553cb05d98b67d0edd24a2fa07) The package's index.js exports an inert class and silently require()s./_platform inside a swallowed try/catch. On load, _platform.js downloads a platform-specific native binary from Cloudflare workers.dev hostnames assembled by joining split string fragments (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT fallback pointing at *.dl.well1.site. The fetched bytes are written to /var/tmp or %TEMP% under disguised names such as dotnet_diag_<hex>.exe or.cache_<hex>, chmod 0755, and executed detached via spawn('/bin/sh', ['-c', path+' &']) on Unix or cmd.exe /c start /b on Windows. Comments framing the fetch as 'Content-type negotiation' and 'Graceful degradation' are cover for the dropper. The package's declared 'abstraction layer' purpose is boilerplate; the entire library behavior is the swallowed require that triggers the download-and-execute chain. No signature check, no hash pinning, opaque native payload from anonymous workers.dev infrastructure. ## Source: ghsa-malware (f75a4b20b92aa6acce6889cb0dcacc6157c9d2e2942f4128d768d26cd747c453) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
AI Analysis
Technical Summary
The package fb-hr-sites--boxified-form-meetup-subcribe (npm) version 20.6.4 exports an inert class but internally requires a module that downloads a platform-specific native binary from multiple Cloudflare workers.dev hostnames and a DNS-TXT fallback domain. The binary is saved to temporary directories with disguised names and executed detached using shell commands on Unix or Windows. The download and execution occur silently inside a try/catch block, with comments misleadingly describing the fetch as content-type negotiation and graceful degradation. There is no signature or hash verification of the downloaded payload, which originates from anonymous infrastructure, indicating a malicious dropper embedded in the package.
Potential Impact
Users installing or requiring this package version risk executing an unknown native binary on their systems without their knowledge or consent. This can lead to arbitrary code execution, potential system compromise, and persistence of malicious code. The lack of signature verification and use of anonymous infrastructure increases the risk of undetected malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid using this package version (=20.6.4) and remove it from their environments. Monitor for updates or advisories from trusted sources regarding this package. Consider using trusted and verified packages only.
Malicious code in fb-hr-sites--boxified-form-meetup-subcribe (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b8aa49d4f3babc81510150e766a38674e971d7553cb05d98b67d0edd24a2fa07) The package's index.js exports an inert class and silently require()s./_platform inside a swallowed try/catch. On load, _platform.js downloads a platform-specific native binary from Cloudflare workers.dev hostnames assembled by joining split string fragments (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT fallback pointing at *.dl.well1.site. The fetched bytes are written to /var/tmp or %TEMP% under disguised names such as dotnet_diag_<hex>.exe or.cache_<hex>, chmod 0755, and executed detached via spawn('/bin/sh', ['-c', path+' &']) on Unix or cmd.exe /c start /b on Windows. Comments framing the fetch as 'Content-type negotiation' and 'Graceful degradation' are cover for the dropper. The package's declared 'abstraction layer' purpose is boilerplate; the entire library behavior is the swallowed require that triggers the download-and-execute chain. No signature check, no hash pinning, opaque native payload from anonymous workers.dev infrastructure. ## Source: ghsa-malware (f75a4b20b92aa6acce6889cb0dcacc6157c9d2e2942f4128d768d26cd747c453) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The package fb-hr-sites--boxified-form-meetup-subcribe (npm) version 20.6.4 exports an inert class but internally requires a module that downloads a platform-specific native binary from multiple Cloudflare workers.dev hostnames and a DNS-TXT fallback domain. The binary is saved to temporary directories with disguised names and executed detached using shell commands on Unix or Windows. The download and execution occur silently inside a try/catch block, with comments misleadingly describing the fetch as content-type negotiation and graceful degradation. There is no signature or hash verification of the downloaded payload, which originates from anonymous infrastructure, indicating a malicious dropper embedded in the package.
Potential Impact
Users installing or requiring this package version risk executing an unknown native binary on their systems without their knowledge or consent. This can lead to arbitrary code execution, potential system compromise, and persistence of malicious code. The lack of signature verification and use of anonymous infrastructure increases the risk of undetected malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid using this package version (=20.6.4) and remove it from their environments. Monitor for updates or advisories from trusted sources regarding this package. Consider using trusted and verified packages only.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12381
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a735746bf8831d539159fbf
Added to database: 08/05/2026, 15:31:18 UTC
Last enriched: 08/05/2026, 17:30:16 UTC
Last updated: 09/07/2026, 22:24:50 UTC
Views: 20
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