Malicious code in claims-get-base-url (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (7e7b7dbbb58284ead0ecb4d93490e9683b4f58b31955d817de52495fb7399106) index.js requires./setup on load, so any require() of this package triggers a dropper chain. setup.js selects a platform-specific payload path (linux/darwin/win32), downloads a binary over HTTPS from string-split-obfuscated hosts of the form oob-worker.cf10X-*.workers.dev with a DNS TXT-record fallback channel under sdk.dl.wel1.ru (hostnames are assembled at runtime via array joins such as ["oob-worker.cf102-baf.workers.de","v"].join("") to hide the.dev TLD from static scanners), writes it to a hidden path under /var/tmp or %TEMP% (.cache_<hex> / dotnet_diag_<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe with stdio ignored and unref()'d. lib/telemetry.js contains a second, dormant copy of the same dropper shape (base64 chunk assembly, chmod 0755, detached /bin/sh spawn), referencing child_process as 'child_'+'process'. The package's advertised purpose ("claims get base url interface") has no legitimate need for cross-platform binary fetch-and-execute; the obfuscation, DNS fallback channel, and hidden dotfile staging are canonical import-time dropper tradecraft. Installing and loading this package runs attacker-controlled native code on the installer's machine.
Malicious code in claims-get-base-url (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (7e7b7dbbb58284ead0ecb4d93490e9683b4f58b31955d817de52495fb7399106) index.js requires./setup on load, so any require() of this package triggers a dropper chain. setup.js selects a platform-specific payload path (linux/darwin/win32), downloads a binary over HTTPS from string-split-obfuscated hosts of the form oob-worker.cf10X-*.workers.dev with a DNS TXT-record fallback channel under sdk.dl.wel1.ru (hostnames are assembled at runtime via array joins such as ["oob-worker.cf102-baf.workers.de","v"].join("") to hide the.dev TLD from static scanners), writes it to a hidden path under /var/tmp or %TEMP% (.cache_<hex> / dotnet_diag_<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe with stdio ignored and unref()'d. lib/telemetry.js contains a second, dormant copy of the same dropper shape (base64 chunk assembly, chmod 0755, detached /bin/sh spawn), referencing child_process as 'child_'+'process'. The package's advertised purpose ("claims get base url interface") has no legitimate need for cross-platform binary fetch-and-execute; the obfuscation, DNS fallback channel, and hidden dotfile staging are canonical import-time dropper tradecraft. Installing and loading this package runs attacker-controlled native code on the installer's machine.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12619
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735734bf8831d53913d19c
Added to database: 08/05/2026, 15:31:00 UTC
Last updated: 08/05/2026, 15:31:00 UTC
Views: 1
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