Malicious code in dolyame-boxy-atom-desktop-bnpl-highlighted-text (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (539999c456d5c8a3f5e2028b9bd7a0f8ca3ab41af3c67044ef7735e0c9f76845) On require, _polyfill.js selects a platform-specific payload, fetches an executable from one of three Cloudflare Workers hosts whose names are assembled at runtime from split string arrays to evade static matching (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT chunked base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched binary is written to /var/tmp or %TEMP% under a disguised name (.cache_<rnd> on POSIX, dotnet_diag_<rnd>.exe on Windows), chmod 0755, and detach-spawned via /bin/sh -c or cmd.exe, with stderr suppressed. The package name is unrelated to the observed behavior; endpoint obfuscation, disguised filenames, opt-out env-var checks, and detached spawning are consistent with a stealth remote-code-execution dropper that runs on any host that installs and imports the package. ## Source: ghsa-malware (0753a74b489cf2420b83a3fac06d65e7939534b3c1861b16f98c42f90a93f0bf) 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
This threat involves a malicious npm package named dolyame-boxy-atom-desktop-bnpl-highlighted-text, specifically version 35.5.6. When required, its _polyfill.js script dynamically constructs URLs to fetch an executable payload from multiple obfuscated Cloudflare Workers endpoints or fallback DNS-TXT chunked base64 encoded sources. The binary is saved to temporary directories with disguised filenames and executed detached from the parent process with suppressed error output, enabling stealthy remote code execution on the host system. The package name does not reflect its malicious behavior, which includes endpoint obfuscation, disguised filenames, environment variable opt-out checks, and detached spawning to evade detection.
Potential Impact
The malicious package enables stealthy remote code execution on any host that installs and imports it, potentially allowing attackers to run arbitrary code with the privileges of the user executing the package. This can lead to system compromise, data theft, or further malicious activity. No known exploits in the wild have been reported yet.
Mitigation Recommendations
No official patch or remediation is currently available. Users should immediately remove the affected package version (=35.5.6) from their environments and avoid installing or importing this package. Monitor for any unexpected processes or files in temporary directories that match the described patterns. Patch status is not yet confirmed — check the vendor advisory or trusted sources for updates on remediation.
Malicious code in dolyame-boxy-atom-desktop-bnpl-highlighted-text (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (539999c456d5c8a3f5e2028b9bd7a0f8ca3ab41af3c67044ef7735e0c9f76845) On require, _polyfill.js selects a platform-specific payload, fetches an executable from one of three Cloudflare Workers hosts whose names are assembled at runtime from split string arrays to evade static matching (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT chunked base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched binary is written to /var/tmp or %TEMP% under a disguised name (.cache_<rnd> on POSIX, dotnet_diag_<rnd>.exe on Windows), chmod 0755, and detach-spawned via /bin/sh -c or cmd.exe, with stderr suppressed. The package name is unrelated to the observed behavior; endpoint obfuscation, disguised filenames, opt-out env-var checks, and detached spawning are consistent with a stealth remote-code-execution dropper that runs on any host that installs and imports the package. ## Source: ghsa-malware (0753a74b489cf2420b83a3fac06d65e7939534b3c1861b16f98c42f90a93f0bf) 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
This threat involves a malicious npm package named dolyame-boxy-atom-desktop-bnpl-highlighted-text, specifically version 35.5.6. When required, its _polyfill.js script dynamically constructs URLs to fetch an executable payload from multiple obfuscated Cloudflare Workers endpoints or fallback DNS-TXT chunked base64 encoded sources. The binary is saved to temporary directories with disguised filenames and executed detached from the parent process with suppressed error output, enabling stealthy remote code execution on the host system. The package name does not reflect its malicious behavior, which includes endpoint obfuscation, disguised filenames, environment variable opt-out checks, and detached spawning to evade detection.
Potential Impact
The malicious package enables stealthy remote code execution on any host that installs and imports it, potentially allowing attackers to run arbitrary code with the privileges of the user executing the package. This can lead to system compromise, data theft, or further malicious activity. No known exploits in the wild have been reported yet.
Mitigation Recommendations
No official patch or remediation is currently available. Users should immediately remove the affected package version (=35.5.6) from their environments and avoid installing or importing this package. Monitor for any unexpected processes or files in temporary directories that match the described patterns. Patch status is not yet confirmed — check the vendor advisory or trusted sources for updates on remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-13295
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a73852fbf8831d5394f0632
Added to database: 08/05/2026, 18:47:11 UTC
Last enriched: 08/05/2026, 21:32:24 UTC
Last updated: 09/11/2026, 00:16:22 UTC
Views: 18
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