Malicious code in eventea-router (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (a8a332e38d2400d3c15f34636f55191ca61c1d52ff49fbead378b9f9239de756) index.js unconditionally requires _vendor.js on load. _vendor.js selects a platform-specific payload path, downloads an opaque native binary over HTTPS from a randomized list of Cloudflare Workers hostnames assembled by array-join string splitting (oob-worker.cf99-9b3.workers.dev, cf100-416, cf102-baf, cf103-070), with a fallback that reassembles a base64 payload from DNS TXT records under *.dl.well1.site. The downloaded bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe,.cache_<hex>), chmod 0755'd, and spawned detached via /bin/sh -c or cmd. Hostnames and dangerous API names (child_process, chmodSync) are split across array literals to defeat static analysis. A sibling module lib/telemetry.js implements the same fetch/DNS-fallback/chmod/spawn chain under an 'Analytics SDK' framing. setup() checks DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK and writes a TTL stamp file to avoid re-triggering, presenting the dropper as opt-out telemetry. The package name suggests a routing library, and no code path serves that purpose; the sole install/import-time effect is remote code execution on the installer's host. ## Source: ghsa-malware (612163866035962f51d1080d88707424b95754324fe4eb36442852643956e029) 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 'eventea-router' npm package (version 20.2.3) includes a malicious module (_vendor.js) that, upon loading, downloads a platform-specific native binary from randomized Cloudflare Workers hostnames over HTTPS. If this fails, it reconstructs the payload from DNS TXT records. The binary is saved to temporary directories with disguised names, permissions are set to executable, and it is spawned detached via shell commands. The code uses obfuscation techniques such as splitting hostnames and dangerous API names across arrays to evade static analysis. A sibling telemetry module implements similar behavior, presenting the dropper as opt-out telemetry by checking environment variables and writing a TTL stamp file to avoid repeated execution. The package does not provide any routing functionality despite its name, and its sole effect is remote code execution on the installer's host.
Potential Impact
This malicious package enables remote code execution on any system that installs or imports it, potentially allowing attackers to execute arbitrary native code with the privileges of the user running the installation. This can lead to full system compromise, data theft, persistence, or further malware deployment. The execution is triggered at install or import time without user interaction beyond package installation.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove the 'eventea-router' package version 20.2.3 from their projects and avoid installing or importing it. Verify dependencies and supply chain integrity to prevent inclusion of this malicious package. Monitor for any suspicious activity on hosts where this package was installed. Patch status is not yet confirmed — check the vendor advisory or trusted security sources for updates.
Malicious code in eventea-router (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (a8a332e38d2400d3c15f34636f55191ca61c1d52ff49fbead378b9f9239de756) index.js unconditionally requires _vendor.js on load. _vendor.js selects a platform-specific payload path, downloads an opaque native binary over HTTPS from a randomized list of Cloudflare Workers hostnames assembled by array-join string splitting (oob-worker.cf99-9b3.workers.dev, cf100-416, cf102-baf, cf103-070), with a fallback that reassembles a base64 payload from DNS TXT records under *.dl.well1.site. The downloaded bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag_<hex>.exe,.cache_<hex>), chmod 0755'd, and spawned detached via /bin/sh -c or cmd. Hostnames and dangerous API names (child_process, chmodSync) are split across array literals to defeat static analysis. A sibling module lib/telemetry.js implements the same fetch/DNS-fallback/chmod/spawn chain under an 'Analytics SDK' framing. setup() checks DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK and writes a TTL stamp file to avoid re-triggering, presenting the dropper as opt-out telemetry. The package name suggests a routing library, and no code path serves that purpose; the sole install/import-time effect is remote code execution on the installer's host. ## Source: ghsa-malware (612163866035962f51d1080d88707424b95754324fe4eb36442852643956e029) 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 'eventea-router' npm package (version 20.2.3) includes a malicious module (_vendor.js) that, upon loading, downloads a platform-specific native binary from randomized Cloudflare Workers hostnames over HTTPS. If this fails, it reconstructs the payload from DNS TXT records. The binary is saved to temporary directories with disguised names, permissions are set to executable, and it is spawned detached via shell commands. The code uses obfuscation techniques such as splitting hostnames and dangerous API names across arrays to evade static analysis. A sibling telemetry module implements similar behavior, presenting the dropper as opt-out telemetry by checking environment variables and writing a TTL stamp file to avoid repeated execution. The package does not provide any routing functionality despite its name, and its sole effect is remote code execution on the installer's host.
Potential Impact
This malicious package enables remote code execution on any system that installs or imports it, potentially allowing attackers to execute arbitrary native code with the privileges of the user running the installation. This can lead to full system compromise, data theft, persistence, or further malware deployment. The execution is triggered at install or import time without user interaction beyond package installation.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately remove the 'eventea-router' package version 20.2.3 from their projects and avoid installing or importing it. Verify dependencies and supply chain integrity to prevent inclusion of this malicious package. Monitor for any suspicious activity on hosts where this package was installed. Patch status is not yet confirmed — check the vendor advisory or trusted security sources for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12374
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a735746bf8831d539159f91
Added to database: 08/05/2026, 15:31:18 UTC
Last enriched: 08/05/2026, 17:29:02 UTC
Last updated: 09/09/2026, 08:28:24 UTC
Views: 20
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