unicocheck-iosnpm
unicocheck-ios is a confirmed malicious npm package (MAL-2026-5831) that steals credentials and exfiltrates sensitive data (malicious version 9.9.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in unicocheck-ios (npm)
What this malware does
package.json declares a preinstall lifecycle script that runs curl against https://webhook.site/fe1246c2-ac04-4493-b223-fe34ba26b79f with query parameters carrying the installer's hostname, username ($(whoami)), current working directory, OS uname output, and HOME path. This fires automatically on npm install before any user code runs, leaking host identifiers and environment context to a third-party webhook capture endpoint controlled by the publisher. The package metadata (name unicocheck-ios, description Unico Check iOS SDK - biometric identity verification, version 9.9.9) impersonates the Unico vendor's iOS SDK and uses the canonical dependency-confusion sentinel version, indicating the package is positioned to win resolution against an internal package name and harvest data from build environments that mistakenly fetch it from the public registry.
The OpenSSF Package Analysis project identified 'unicocheck-ios' @ 9.9.9 (npm) as malicious.
It is considered malicious because:
- The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for unicocheck-ios (version 9.9.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging unicocheck-ios across your stack and pipelines.
If you installed it — respond
unicocheck-ios is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If unicocheck-ios 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 unicocheck-ios 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks unicocheck-ios-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.