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Malicious package

devplatform-cra-templatenpm

devplatform-cra-template is a confirmed malicious npm package (MAL-2026-12706) that typosquats a legitimate package to trick installs (malicious version 35.6.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in devplatform-cra-template (npm)

MAL-2026-12706
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall devplatform-cra-template

What this malware does

On require('devplatform-cra-template'), index.js loads bootstrap.js, which selects a per-platform payload path and downloads bytes over HTTPS from one of three concatenation-obfuscated Cloudflare Workers mirrors (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT fallback resolving through sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under names mimicking legitimate tooling (.cache<hex>, dotnet_diag_<hex>.exe), chmod 755'd, and spawned detached via /bin/sh -c or cmd.exe. Every network destination, the child_process require, and chmodSync are assembled from split-string arrays joined at runtime to defeat static analysis. A second, structurally identical dropper is shipped in lib/telemetry.js (~81 KB, disguised as an analytics SDK): base64-assembled bytes, chmod 755, cp.spawn('/bin/sh', ['-c', filePath + ' &'],...); it is not reachable from index.js in this version but is present in the tarball. The package name resembles the legitimate cra-template family, consistent with a typosquat lure delivering remote code to any consumer that requires it.

Malicious versions

1 flagged
35.6.2

Indicators of compromise (SHA-256)

23e3df86e82704f0b114e616b4dc7f4acd0e5c377a336a61cb987625a31f3940

Detection & response playbook

Typosquat
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for devplatform-cra-template (version 35.6.2). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging devplatform-cra-template across your stack and pipelines.

  2. If you installed it — respond

    devplatform-cra-template is a typosquat — you almost certainly intended a legitimately-named package. Remove devplatform-cra-template, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If devplatform-cra-template was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks devplatform-cra-template before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. devplatform-cra-template on npm has been identified as a malicious package (version 35.6.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015063

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks devplatform-cra-template-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

devplatform-cra-template (npm) malicious package — MAL-2026-12706 | O3 Security