Malicious code in devplatform-spa-plugin-suspense (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0cbc392b622da2cfe503443ce6a7ee67083df8a9f6e371f13e1a7625f3379bd7) index.js requires setup.js at load, which downloads a platform-specific native binary from string-concat-obfuscated Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, cf101-adf, cf99-9b3, cf100-416) with DNS-TXT-record fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache_<hex> on Unix or a Windows temp path named dotnet_diag_<hex>.exe, chmod'd 0o755, and detached-spawned via /bin/sh -c or cmd.exe /c start. Hostnames and dangerous API names (child_process, chmodSync) are reconstructed from split literal arrays to evade static analysis, and there is no hash or signature verification of the downloaded payload. A second implementation of the same download-chmod-spawn pattern is present in lib/telemetry.js (~81KB), framed as an 'Analytics SDK', though it is not reached from the current main entry. Executing require() on this package causes attacker-controlled native code to run on the installer's machine. ## Source: ghsa-malware (ccbbaf9a76f0fb8271605d97295f16ee50f771f45057412a890cd08a0b0623e6) 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 devplatform-spa-plugin-suspense npm package version 35.6.2 includes malicious code in its index.js and lib/telemetry.js files. Upon loading, it downloads a platform-specific native binary from obfuscated Cloudflare Workers domains and fallback domains, writes the binary to a temporary directory, sets executable permissions, and spawns it detached via shell commands. The code uses string-splitting and obfuscation to evade static analysis and does not verify the integrity of the downloaded payload. This behavior leads to execution of attacker-controlled native code on the machine installing or requiring the package.
Potential Impact
Successful execution results in arbitrary native code running on the installer's machine, potentially allowing full compromise of the system. The malicious payload is downloaded and executed without user consent or verification, enabling attackers to execute any code with the privileges of the user running the npm install or require command.
Mitigation Recommendations
No official patch or remediation is currently documented for this package version. Users should avoid installing or requiring devplatform-spa-plugin-suspense version 35.6.2. It is recommended to remove this package from projects and replace it with trusted alternatives. Monitor for updates from the package maintainer or npm advisories for any official fixes. Since this is not a cloud service, remediation depends on user action.
Malicious code in devplatform-spa-plugin-suspense (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0cbc392b622da2cfe503443ce6a7ee67083df8a9f6e371f13e1a7625f3379bd7) index.js requires setup.js at load, which downloads a platform-specific native binary from string-concat-obfuscated Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, cf101-adf, cf99-9b3, cf100-416) with DNS-TXT-record fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache_<hex> on Unix or a Windows temp path named dotnet_diag_<hex>.exe, chmod'd 0o755, and detached-spawned via /bin/sh -c or cmd.exe /c start. Hostnames and dangerous API names (child_process, chmodSync) are reconstructed from split literal arrays to evade static analysis, and there is no hash or signature verification of the downloaded payload. A second implementation of the same download-chmod-spawn pattern is present in lib/telemetry.js (~81KB), framed as an 'Analytics SDK', though it is not reached from the current main entry. Executing require() on this package causes attacker-controlled native code to run on the installer's machine. ## Source: ghsa-malware (ccbbaf9a76f0fb8271605d97295f16ee50f771f45057412a890cd08a0b0623e6) 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 devplatform-spa-plugin-suspense npm package version 35.6.2 includes malicious code in its index.js and lib/telemetry.js files. Upon loading, it downloads a platform-specific native binary from obfuscated Cloudflare Workers domains and fallback domains, writes the binary to a temporary directory, sets executable permissions, and spawns it detached via shell commands. The code uses string-splitting and obfuscation to evade static analysis and does not verify the integrity of the downloaded payload. This behavior leads to execution of attacker-controlled native code on the machine installing or requiring the package.
Potential Impact
Successful execution results in arbitrary native code running on the installer's machine, potentially allowing full compromise of the system. The malicious payload is downloaded and executed without user consent or verification, enabling attackers to execute any code with the privileges of the user running the npm install or require command.
Mitigation Recommendations
No official patch or remediation is currently documented for this package version. Users should avoid installing or requiring devplatform-spa-plugin-suspense version 35.6.2. It is recommended to remove this package from projects and replace it with trusted alternatives. Monitor for updates from the package maintainer or npm advisories for any official fixes. Since this is not a cloud service, remediation depends on user action.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12781
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a73573bbf8831d539152eec
Added to database: 08/05/2026, 15:31:07 UTC
Last enriched: 08/05/2026, 16:47:23 UTC
Last updated: 09/07/2026, 23:51:38 UTC
Views: 17
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