test1hh235npm
test1hh235 is a confirmed malicious npm package (MAL-2026-16314) 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 test1hh235 (npm)
What this malware does
Package declares both preinstall and postinstall lifecycle hooks that execute index.js on npm install. index.js issues an HTTP GET to the hardcoded bare IP 128.199.122.145 over plain HTTP, embedding the package name in the query string (http://128.199.122.145/?test1hh235). Manifest shape is consistent with a dependency-confusion reconnaissance probe: version 99.99.99 (implausibly high to win resolution against an internal package), empty description, and a typo-prone name. The beacon fires automatically during install and signals successful resolution/installation to an attacker-controlled host, confirming the target environment for follow-on attack.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for test1hh235 (version 99.99.99). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging test1hh235 across your stack and pipelines.
If you installed it — respond
test1hh235 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 test1hh235 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks test1hh235 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks test1hh235-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.