Malicious code in devplatform-i18n (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (30b21acc89730541bc58390e2694a9e5410417e5232bb4f4d47c0c27b035e2f4) Package is published as an i18n library but its main entry (index.js) requires./setup on load. setup.js selects a per-platform payload path, fetches bytes over HTTPS from mirror hosts assembled at runtime via array-join (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a DNS TXT chunked base64 fallback via subdomains of wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmod 0755, and spawned detached via /bin/sh -c '<path> &' or cmd /c start. A stamp file rate-limits re-execution. A parallel loader in lib/telemetry.js reconstructs a base64 payload from DNS TXT chunks and executes it through the same write+chmod+spawn chain; dangerous API references are hidden via string concatenation (require("child_" + "process"), fs["chmod" + "Sync"]). Destination hosts, module names, and filesystem APIs are all obfuscated via array-join and string concatenation, and the dropped filenames mimic OS cache/diagnostic files. ## Source: ghsa-malware (2a340322be600687a0c7f8d2a109863bf8544e0a8637184db038b9ff8861810e) 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-i18n package published on npm, specifically version 35.6.2, is a malicious package masquerading as an internationalization library. Its main entry point requires a setup script that dynamically selects a payload based on the platform and fetches executable bytes from multiple obfuscated remote hosts over HTTPS and DNS TXT record chunks. These payloads are written to temporary directories on Unix or Windows systems, permissions are set to executable, and the payloads are spawned detached from the parent process. The package uses obfuscation techniques such as array joins and string concatenation to conceal API calls like child_process and fs.chmodSync, as well as the remote hosts and filenames. This results in unauthorized remote code execution on the host system.
Potential Impact
This malicious package enables remote code execution by downloading and executing arbitrary payloads on the victim's machine. The execution is done in a detached manner, allowing persistence and evasion of detection. The obfuscation and use of multiple delivery mechanisms complicate detection and analysis. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix or removal is confirmed, users should avoid using devplatform-i18n version 35.6.2 and remove it from their environments if present. Monitoring for unusual child process executions and network connections to the specified domains may help detect infections.
Malicious code in devplatform-i18n (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (30b21acc89730541bc58390e2694a9e5410417e5232bb4f4d47c0c27b035e2f4) Package is published as an i18n library but its main entry (index.js) requires./setup on load. setup.js selects a per-platform payload path, fetches bytes over HTTPS from mirror hosts assembled at runtime via array-join (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a DNS TXT chunked base64 fallback via subdomains of wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmod 0755, and spawned detached via /bin/sh -c '<path> &' or cmd /c start. A stamp file rate-limits re-execution. A parallel loader in lib/telemetry.js reconstructs a base64 payload from DNS TXT chunks and executes it through the same write+chmod+spawn chain; dangerous API references are hidden via string concatenation (require("child_" + "process"), fs["chmod" + "Sync"]). Destination hosts, module names, and filesystem APIs are all obfuscated via array-join and string concatenation, and the dropped filenames mimic OS cache/diagnostic files. ## Source: ghsa-malware (2a340322be600687a0c7f8d2a109863bf8544e0a8637184db038b9ff8861810e) 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-i18n package published on npm, specifically version 35.6.2, is a malicious package masquerading as an internationalization library. Its main entry point requires a setup script that dynamically selects a payload based on the platform and fetches executable bytes from multiple obfuscated remote hosts over HTTPS and DNS TXT record chunks. These payloads are written to temporary directories on Unix or Windows systems, permissions are set to executable, and the payloads are spawned detached from the parent process. The package uses obfuscation techniques such as array joins and string concatenation to conceal API calls like child_process and fs.chmodSync, as well as the remote hosts and filenames. This results in unauthorized remote code execution on the host system.
Potential Impact
This malicious package enables remote code execution by downloading and executing arbitrary payloads on the victim's machine. The execution is done in a detached manner, allowing persistence and evasion of detection. The obfuscation and use of multiple delivery mechanisms complicate detection and analysis. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix or removal is confirmed, users should avoid using devplatform-i18n version 35.6.2 and remove it from their environments if present. Monitoring for unusual child process executions and network connections to the specified domains may help detect infections.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12714
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a735738bf8831d53914b39d
Added to database: 08/05/2026, 15:31:04 UTC
Last enriched: 08/05/2026, 16:32:49 UTC
Last updated: 09/07/2026, 22:07:14 UTC
Views: 22
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