test1gg234npm
Advisory published Updated
test1gg234 is a confirmed malicious npm package (MAL-2026-16313) that opens a backdoor for remote access (malicious version 99.99.99). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in test1gg234 (npm)
What this malware does
The package declares both preinstall and postinstall lifecycle hooks that execute index.js, which issues a plaintext HTTP GET to the hardcoded bare IP 128.199.122.145 with the package name in the query string. The beacon fires unconditionally on npm install, confirming to the operator of that host that the package was resolved and installed on the target machine. The package has no other functionality: an empty description, an inflated version (99.99.99), and a manifest that declares a lookalike dependency requests alongside a duplicate capitalized Dependencies key referencing request — the shape of a dependency-confusion probe rather than a functional library.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for test1gg234 (version 99.99.99).
If you installed it — respond
test1gg234 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 test1gg234 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 test1gg234-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.