markdown-editable-tablenpm
Malicious code in markdown-editable-table (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
The package's package.json declares a preinstall hook (node index.d.js) that runs automatically on npm install. The script in index.d.js base64-decodes a payload whose decoded body fetches JavaScript from https://everydaynodechecker-39143n.vercel.app/api/key?mem=root1 and passes the response to eval. Both the destination URL (hidden inside a base64 blob) and the eval identifier (reassembled from the char-code array [101,118,97,108] via String.fromCharCode and invoked as globalThis[tag](text)) are obfuscated. The package metadata (repository wooorm/markdown-table, description, funding) impersonates the legitimate markdown-table package while shipping unrelated code, indicating a typosquat lure. Installing the package results in arbitrary attacker-controlled JavaScript executing on the installer's machine.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for markdown-editable-table (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging markdown-editable-table across your stack and pipelines.
If you installed it — respond
markdown-editable-table is a typosquat — you almost certainly intended a legitimately-named package. Remove markdown-editable-table, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If markdown-editable-table 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 markdown-editable-table 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 markdown-editable-table-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.