Malicious code in delivery-ci-upgrade-from (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (46b1b760480eca3b3ad596491193f7aa55ed0a3e982d6978c071e04e793ff8b0) index.js unconditionally requires _bridge.js, which runs a bootstrap routine on module load. The bootstrap selects a platform-specific path (linux_x64, linux_arm64, darwin, win32), fetches an unsigned binary from split-string-obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), with a base64-chunked DNS TXT covert channel fallback under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru and net.dl.wel1.ru. The retrieved bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmod'd to 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. Hostnames are constructed by joining string fragments at runtime, dropped filenames use decoy names (dotnet_diag,.cache_,.analytics_state) inconsistent with the package's stated purpose, and no hash or signature verification is performed on the downloaded payload. The destinations are unrelated to any publisher of this package. ## Source: ghsa-malware (75454f2a282eb740a7f1334cb94456d3fdedc39a065c89e3c8fe7f5fa6a3fcfd) 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 delivery-ci-upgrade-from npm package version 35.6.9 includes a malicious module that, upon loading, runs a bootstrap routine selecting platform-specific binaries fetched from obfuscated Cloudflare Workers domains and DNS TXT record fallback hosts. The downloaded payload is saved to temporary directories with misleading filenames and executed detached from the main process. No signature or hash verification is performed on the payload, and the hostnames and filenames are constructed dynamically to evade detection. This activity is unrelated to the legitimate functionality of the package, indicating it is a malicious package designed to execute arbitrary code on the host system.
Potential Impact
Systems installing or running delivery-ci-upgrade-from version 35.6.9 may execute arbitrary unsigned binaries fetched from attacker-controlled infrastructure, potentially leading to full system compromise or unauthorized actions. The lack of payload verification and use of covert channels increases the risk of stealthy malicious activity.
Mitigation Recommendations
No official patch or remediation has been published for this malicious package version. Users should immediately remove version 35.6.9 of delivery-ci-upgrade-from from their environments and avoid installing this package version. Verify package sources and use trusted package registries. Monitor for any unexpected network connections to the described domains and remove any binaries dropped by this package.
Malicious code in delivery-ci-upgrade-from (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (46b1b760480eca3b3ad596491193f7aa55ed0a3e982d6978c071e04e793ff8b0) index.js unconditionally requires _bridge.js, which runs a bootstrap routine on module load. The bootstrap selects a platform-specific path (linux_x64, linux_arm64, darwin, win32), fetches an unsigned binary from split-string-obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), with a base64-chunked DNS TXT covert channel fallback under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru and net.dl.wel1.ru. The retrieved bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmod'd to 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. Hostnames are constructed by joining string fragments at runtime, dropped filenames use decoy names (dotnet_diag,.cache_,.analytics_state) inconsistent with the package's stated purpose, and no hash or signature verification is performed on the downloaded payload. The destinations are unrelated to any publisher of this package. ## Source: ghsa-malware (75454f2a282eb740a7f1334cb94456d3fdedc39a065c89e3c8fe7f5fa6a3fcfd) 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 delivery-ci-upgrade-from npm package version 35.6.9 includes a malicious module that, upon loading, runs a bootstrap routine selecting platform-specific binaries fetched from obfuscated Cloudflare Workers domains and DNS TXT record fallback hosts. The downloaded payload is saved to temporary directories with misleading filenames and executed detached from the main process. No signature or hash verification is performed on the payload, and the hostnames and filenames are constructed dynamically to evade detection. This activity is unrelated to the legitimate functionality of the package, indicating it is a malicious package designed to execute arbitrary code on the host system.
Potential Impact
Systems installing or running delivery-ci-upgrade-from version 35.6.9 may execute arbitrary unsigned binaries fetched from attacker-controlled infrastructure, potentially leading to full system compromise or unauthorized actions. The lack of payload verification and use of covert channels increases the risk of stealthy malicious activity.
Mitigation Recommendations
No official patch or remediation has been published for this malicious package version. Users should immediately remove version 35.6.9 of delivery-ci-upgrade-from from their environments and avoid installing this package version. Verify package sources and use trusted package registries. Monitor for any unexpected network connections to the described domains and remove any binaries dropped by this package.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12687
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a735737bf8831d539146f78
Added to database: 08/05/2026, 15:31:03 UTC
Last enriched: 08/05/2026, 16:26:41 UTC
Last updated: 09/17/2026, 08:53:58 UTC
Views: 19
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