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)
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
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for dcfarguscert (version 999.0.1).
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.
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
Campaign
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.