Malicious code in beaver-ui-popover-card (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (c7a6f956dc3e60442172279367aeb7cbfb758a853f844c53b3ff22a972f0bac5) On require('beaver-ui-popover-card'), _support.js downloads a platform-specific binary from Cloudflare Workers endpoints whose hostnames are assembled at runtime from split string fragments (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT fallback resolver chain across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a temp path under disguised names (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0o755, and spawned detached via /bin/sh -c or cmd. No signature or hash verification is performed. A cover 'analytics_state' TTL file caches the drop for ~6 hours to run once per window. A second dropper of the same shape is bundled in lib/telemetry.js (~81KB) wrapped in a 'telemetry SDK' cover story, using runtime string concatenation to hide API names ('chmod'+'Sync', 'child_'+'process') and base64-decoded chunk reassembly. Hostname obfuscation, fetch destinations unrelated to the package publisher, disguised filenames, DNS covert-channel fallback, and detached execution together are unambiguous dropper behavior triggered on any require() of the package. ## Source: ghsa-malware (8576ef2b39edb805a47435820b132a90d89fc93902e97cc279a334cc04d5fa8d) 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 'beaver-ui-popover-card' npm package version 35.4.4 includes malicious functionality in its _support.js and lib/telemetry.js files. Upon require(), it downloads platform-specific binaries from dynamically assembled Cloudflare Workers hostnames with DNS TXT fallback resolvers unrelated to the package publisher. The binaries are saved under disguised names, made executable, and executed detached via shell commands without any integrity verification. Additionally, a second dropper embedded in telemetry.js uses runtime string concatenation and base64 decoding to hide its operations. Hostname obfuscation, covert DNS fallback, disguised filenames, and detached execution collectively confirm this package acts as a dropper malware.
Potential Impact
This malicious package can execute arbitrary platform-specific binaries on the host system without user consent or verification, potentially leading to full system compromise or further malware deployment. The lack of signature or hash verification and the use of obfuscation techniques increase the risk of undetected execution. Any project that includes this package version risks executing untrusted code, which can lead to data theft, system disruption, or persistence of malicious payloads.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove version 35.4.4 of 'beaver-ui-popover-card' from their projects and avoid using this package version. Consider auditing dependencies for this package and replacing it with a trusted alternative. Monitor for updates or advisories from the package publisher or security vendors for further remediation guidance. Since this is a malicious package, no legitimate fix is expected; removal and avoidance are the primary mitigations.
Malicious code in beaver-ui-popover-card (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (c7a6f956dc3e60442172279367aeb7cbfb758a853f844c53b3ff22a972f0bac5) On require('beaver-ui-popover-card'), _support.js downloads a platform-specific binary from Cloudflare Workers endpoints whose hostnames are assembled at runtime from split string fragments (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT fallback resolver chain across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a temp path under disguised names (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0o755, and spawned detached via /bin/sh -c or cmd. No signature or hash verification is performed. A cover 'analytics_state' TTL file caches the drop for ~6 hours to run once per window. A second dropper of the same shape is bundled in lib/telemetry.js (~81KB) wrapped in a 'telemetry SDK' cover story, using runtime string concatenation to hide API names ('chmod'+'Sync', 'child_'+'process') and base64-decoded chunk reassembly. Hostname obfuscation, fetch destinations unrelated to the package publisher, disguised filenames, DNS covert-channel fallback, and detached execution together are unambiguous dropper behavior triggered on any require() of the package. ## Source: ghsa-malware (8576ef2b39edb805a47435820b132a90d89fc93902e97cc279a334cc04d5fa8d) 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 'beaver-ui-popover-card' npm package version 35.4.4 includes malicious functionality in its _support.js and lib/telemetry.js files. Upon require(), it downloads platform-specific binaries from dynamically assembled Cloudflare Workers hostnames with DNS TXT fallback resolvers unrelated to the package publisher. The binaries are saved under disguised names, made executable, and executed detached via shell commands without any integrity verification. Additionally, a second dropper embedded in telemetry.js uses runtime string concatenation and base64 decoding to hide its operations. Hostname obfuscation, covert DNS fallback, disguised filenames, and detached execution collectively confirm this package acts as a dropper malware.
Potential Impact
This malicious package can execute arbitrary platform-specific binaries on the host system without user consent or verification, potentially leading to full system compromise or further malware deployment. The lack of signature or hash verification and the use of obfuscation techniques increase the risk of undetected execution. Any project that includes this package version risks executing untrusted code, which can lead to data theft, system disruption, or persistence of malicious payloads.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove version 35.4.4 of 'beaver-ui-popover-card' from their projects and avoid using this package version. Consider auditing dependencies for this package and replacing it with a trusted alternative. Monitor for updates or advisories from the package publisher or security vendors for further remediation guidance. Since this is a malicious package, no legitimate fix is expected; removal and avoidance are the primary mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12821
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a738536bf8831d5394f0be7
Added to database: 08/05/2026, 18:47:18 UTC
Last enriched: 08/05/2026, 18:58:54 UTC
Last updated: 08/16/2026, 15:51:58 UTC
Views: 19
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