strapi-plugin-yesccresh-meebnpm
strapi-plugin-yesccresh-meeb is a confirmed malicious npm package (MAL-2026-16194) that executes malicious code on install (malicious version 3.6.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in strapi-plugin-yesccresh-meeb (npm)
What this malware does
package.json declares postinstall: node postinstall.js, which unconditionally spawns bash with stdio redirected to /dev/tcp/14.225.210.85/443, giving the remote endpoint interactive command execution as the installing user on every npm install. The script includes a reconnect loop that re-establishes the shell on disconnect, providing persistence for the duration of the process. No user action, configuration, or runtime invocation is required for the callback to fire.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for strapi-plugin-yesccresh-meeb (version 3.6.8). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging strapi-plugin-yesccresh-meeb across your stack and pipelines.
If you installed it — respond
Remove strapi-plugin-yesccresh-meeb 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 strapi-plugin-yesccresh-meeb 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 strapi-plugin-yesccresh-meeb 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 strapi-plugin-yesccresh-meeb-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.