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Malicious package

dcfarguscertnpm

Advisory published Updated

dcfarguscert is a confirmed malicious npm package (MAL-2026-13753) that opens a backdoor for remote access (malicious version 999.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dcfarguscert (npm)

MAL-2026-13753
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dcfarguscert

What this malware does

[email protected] registers both preinstall and postinstall lifecycle scripts that invoke src/telemetry.js. On install, telemetry.js collects host identifiers (os.hostname(), os.userInfo().username, OS release, process.platform, process.arch, Node version, CI flag) and the output of npm ls -g --depth=0 --json (the installer's globally installed npm package inventory), then POSTs the aggregated payload over plain HTTP to the hardcoded endpoint http://16-171-38-148.sslip.io:8080/api/install (bare IP 16.171.38.148 encoded via sslip.io). The version number 999.0.1 and the package description referencing a 'dependency test' with 'check ips' are consistent with a dependency-confusion beacon that fires unconditionally on install without any user consent or opt-out.

Malicious versions

1 flagged
999.0.1

Indicators of compromise (SHA-256)

6b0841cccc5aa4961351a4cf991d7744a1d7acc4da3824321fed50e1e7b8657d

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for dcfarguscert (version 999.0.1).

  2. If you installed it — respond

    dcfarguscert establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If dcfarguscert 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. dcfarguscert on npm has been identified as a malicious package (version 999.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-017385

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dcfarguscert-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

dcfarguscert (npm) malicious package — MAL-2026-13753 | O3 Security