fr-ito-web-reactnpm
Advisory published Updated
fr-ito-web-react is a confirmed malicious npm package (MAL-2026-14019) that executes malicious code on install (malicious version 99.99.99). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in fr-ito-web-react (npm)
What this malware does
Package's package.json declares both preinstall and postinstall lifecycle hooks that execute node exfil.js on npm install. exfil.js runs whoami and id via child_process.execSync and transmits the output to the hardcoded host d9vbd1vstrb04vgt4dqg63k7yg55jhmt5.oast.site over HTTPS POST with TLS verification disabled (rejectUnauthorized: false), with a DNS lookup fallback that encodes the whoami output as a hex subdomain of the same collector. The package uses version 99.99.99, a typical dependency-confusion cover version to force resolution over an internal package of the same name. Installer identity and host data leaves the machine to an attacker-controlled interactsh/OAST collector without user interaction.
The OpenSSF Package Analysis project identified 'fr-ito-web-react' @ 99.99.99 (npm) as malicious.
It is considered malicious because:
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The package communicates with a domain associated with malicious activity.
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The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for fr-ito-web-react (version 99.99.99).
If you installed it — respond
Remove fr-ito-web-react from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If fr-ito-web-react 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks fr-ito-web-react-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.