Malicious code in dolyame-boxy-independent-bnpl-button (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (cfda80d3053a8c106f2665b5c1a9a9235532a4acca7abd2a436b5c69fe7673d6) On require() of the package's main entry, _runtime.js fetches an opaque native binary from anonymous Cloudflare workers.dev subdomains (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT chunked fallback resolving hosts under dl.wel1.ru (sdk./ext./pkg./net.), writes it to /var/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe, chmods 0755, and spawns it detached via /bin/sh -c... & or cmd /c start. Hostnames are assembled at runtime from split-string arrays and child_process is loaded via a runtime require() inside _activate(), consistent with static-scanner evasion. Filenames masquerade as dotnet_diag /.cache and a TTL marker (analytics_state) rate-limits re-execution. Installing or requiring this package yields full-host code execution on the installer under attacker-controlled bytes. ## Source: ghsa-malware (20ea76efd9c7012010991937c1135b107f66754480f47907e869438deeee3bed) 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 npm package dolyame-boxy-independent-bnpl-button version 35.3.6 includes a malicious runtime script (_runtime.js) that fetches an opaque native binary from anonymous Cloudflare workers.dev subdomains and fallback DNS-TXT resolved hosts under dl.wel1.ru. The binary is written to temporary directories such as /var/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe, given executable permissions (chmod 0755), and executed detached via shell commands. Hostnames are dynamically assembled at runtime to evade static analysis, and the child_process module is loaded dynamically inside an activation function. The filenames and execution behavior are designed to masquerade as legitimate dotnet diagnostic files, with a rate-limiting mechanism to avoid repeated execution. This results in full-host code execution on the installer or requiring environment under attacker control.
Potential Impact
Successful installation or requiring of this package leads to arbitrary code execution on the host system with the privileges of the user performing the action. This can result in complete compromise of the affected system, including potential persistence, data theft, or further malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or requiring version 35.3.6 of the dolyame-boxy-independent-bnpl-button package. Verify package integrity and source before installation. Consider removing this package if already installed. Monitor vendor advisories for updates or official fixes. Since this is not a cloud service, remediation depends on user action.
Malicious code in dolyame-boxy-independent-bnpl-button (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (cfda80d3053a8c106f2665b5c1a9a9235532a4acca7abd2a436b5c69fe7673d6) On require() of the package's main entry, _runtime.js fetches an opaque native binary from anonymous Cloudflare workers.dev subdomains (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT chunked fallback resolving hosts under dl.wel1.ru (sdk./ext./pkg./net.), writes it to /var/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe, chmods 0755, and spawns it detached via /bin/sh -c... & or cmd /c start. Hostnames are assembled at runtime from split-string arrays and child_process is loaded via a runtime require() inside _activate(), consistent with static-scanner evasion. Filenames masquerade as dotnet_diag /.cache and a TTL marker (analytics_state) rate-limits re-execution. Installing or requiring this package yields full-host code execution on the installer under attacker-controlled bytes. ## Source: ghsa-malware (20ea76efd9c7012010991937c1135b107f66754480f47907e869438deeee3bed) 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 npm package dolyame-boxy-independent-bnpl-button version 35.3.6 includes a malicious runtime script (_runtime.js) that fetches an opaque native binary from anonymous Cloudflare workers.dev subdomains and fallback DNS-TXT resolved hosts under dl.wel1.ru. The binary is written to temporary directories such as /var/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe, given executable permissions (chmod 0755), and executed detached via shell commands. Hostnames are dynamically assembled at runtime to evade static analysis, and the child_process module is loaded dynamically inside an activation function. The filenames and execution behavior are designed to masquerade as legitimate dotnet diagnostic files, with a rate-limiting mechanism to avoid repeated execution. This results in full-host code execution on the installer or requiring environment under attacker control.
Potential Impact
Successful installation or requiring of this package leads to arbitrary code execution on the host system with the privileges of the user performing the action. This can result in complete compromise of the affected system, including potential persistence, data theft, or further malware deployment.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or requiring version 35.3.6 of the dolyame-boxy-independent-bnpl-button package. Verify package integrity and source before installation. Consider removing this package if already installed. Monitor vendor advisories for updates or official fixes. Since this is not a cloud service, remediation depends on user action.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-13313
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a738531bf8831d5394f0701
Added to database: 08/05/2026, 18:47:13 UTC
Last enriched: 08/05/2026, 21:18:02 UTC
Last updated: 09/07/2026, 21:51:54 UTC
Views: 17
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