NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
Malicious package

devplatform-cli-plugin-generatornpm

Advisory published Updated

devplatform-cli-plugin-generator is a confirmed malicious npm package (MAL-2026-12701) that executes malicious code on install (malicious version 35.3.5). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in devplatform-cli-plugin-generator (npm)

MAL-2026-12701
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall devplatform-cli-plugin-generator

What this malware does

On require() of the package, index.js loads bootstrap.js, which reconstructs a list of Cloudflare Workers hostnames from split string fragments (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev) and a DNS-TXT chunked-base64 fallback under *.dl.wel1.ru, downloads a platform-specific binary from these non-publisher hosts with no hash or signature verification, writes it to /var/tmp or %TEMP% under cover-story names (dotnet_diag<hex>.exe,.cache_<hex>), chmods it 0o755, and spawns it detached in the background via cp.spawn("/bin/sh", ["-c", fp+" &"], {detached:true}) or the Windows cmd equivalent. A second file, lib/telemetry.js (81 KB), bundles the same dropper primitives under an "Analytics SDK" cover story with additional obfuscation (require("child_"+"process"), fs["chmod"+"Sync"], base64-chunk assembly), extending the attack surface. Split-string reconstruction of hostnames and API names is anti-analysis obfuscation inconsistent with legitimate telemetry, which places endpoints in plain configuration.

Malicious versions

1 flagged
35.3.5

Indicators of compromise (SHA-256)

e369efa925874a9e8d5b883567522eb39e0284122294d62a92358b0b937f256f

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for devplatform-cli-plugin-generator (version 35.3.5).

  2. If you installed it — respond

    Remove devplatform-cli-plugin-generator from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If devplatform-cli-plugin-generator was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. devplatform-cli-plugin-generator on npm has been identified as a malicious package (version 35.3.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015064

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks devplatform-cli-plugin-generator-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
devplatform-cli-plugin-generator (npm) malicious package — MAL-2026-12701 | O3 Security