@vite-js/uinpm
Malicious code in @vite-js/ui (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
Package @vite-js/ui impersonates the official vite package: package.json declares author 'Evan You', homepage 'https://vitejs.dev', ships an unmodified Vite README and a near-verbatim Vite dist/ tree, and exposes bin.vite pointing at bin/vite.js — so any developer who installs this and runs the documented vite command executes this package's CLI. Appended to the legitimate Vite bin code in bin/vite.js is a heavily obfuscated IIFE that reconstructs strings from a packed blob via a custom shuffler (keyed by 4606094, with %/#1/#0 substitutions) to hide the identifiers http, child_process, JSON, eval, and spawn. At runtime it issues a JSON-RPC HTTP fetch, XOR-decodes the response using a key derived from a remote field, passes the decoded buffer to eval(r), and then calls child_process.spawn with {detached:true, stdio:..., windowsHide:true} on a second fetched-and-decoded payload — a hidden, detached process that outlives the CLI invocation and provides a persistent execution channel. A short time-gate throttles re-trigger. Legitimate Vite has no such bootstrap; the custom string-array obfuscator covers only the network/eval/spawn surface, which is the canonical dropper-plus-backdoor shape.
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 @vite-js/ui (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @vite-js/ui across your stack and pipelines.
If you installed it — respond
@vite-js/ui 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 @vite-js/ui 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 @vite-js/ui 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 @vite-js/ui-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.