Which versions of devplatform-cli are malicious?

The following npm versions of devplatform-cli are flagged malicious: 35.7.4. Treat any of these as compromised.

How do I remediate devplatform-cli if I installed it?

devplatform-cli is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed devplatform-cli — how do I know if it already compromised me?

If devplatform-cli 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.

Is devplatform-cli part of a known attack campaign?

Yes — devplatform-cli is associated with the IN-MAL-2026-015077 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find devplatform-cli across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for devplatform-cli (version 35.7.4).

Malicious package

devplatform-clinpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

devplatform-cli is a confirmed malicious npm package (MAL-2026-12699) that steals credentials and exfiltrates sensitive data (malicious version 35.7.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in devplatform-cli (npm)

MAL-2026-12699

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall devplatform-cli

What this malware does

On require() of devplatform-cli, index.js loads adapter.js which assembles Cloudflare Workers hostnames from string-split fragments (e.g. ["oob-worker.cf","103-070.workers.d","ev"].join("")) with a DNS-TXT chunked-base64 fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp or %TEMP% under a disguised filename (.cache<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), calls fs.chmodSync(path, 0o755) on POSIX, and background-spawns it detached via cp.spawn("/bin/sh",["-c",fp+" &"],{detached:true,stdio:"ignore"}) or cmd /c start /b. A sibling module lib/telemetry.js (81KB, framed as "Analytics SDK") duplicates the same fetch->write->chmod 0755->spawn /bin/sh pattern and further obfuscates dangerous APIs via require("child_"+"process") and fs["chmod"+"Sync"]. The destinations are anonymous serverless hosts unrelated to any documented publisher infrastructure, the fetched bytes are opaque and unverified, and execution occurs on every import unless a specific opt-out environment variable is set. Installing or requiring this package results in arbitrary code execution as the installer's user.

Malicious versions

1 flagged

35.7.4

Indicators of compromise (SHA-256)

626164264796294f1cb4322c03454ff5d9c50f7f0edb7534bfb6a5843d08079d

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for devplatform-cli (version 35.7.4).
If you installed it — respond
devplatform-cli is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If devplatform-cli 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 on npm has been identified as a malicious package (version 35.7.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015077

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks devplatform-cli-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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