boxy-docusaurus-plugin-content-docs-lightnpm
boxy-docusaurus-plugin-content-docs-light is a confirmed malicious npm package (MAL-2026-13041) that opens a backdoor for remote access (malicious version 35.3.7). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in boxy-docusaurus-plugin-content-docs-light (npm)
What this malware does
[email protected] executes a dropper on require. index.js loads ext.js, which reconstructs destination hostnames at runtime from split string arrays to resolve C2 hosts including oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, and oob-worker.cf103-070.workers.dev, with DNS TXT fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. It downloads a platform-specific binary via https.get, writes it to /var/tmp or %TEMP% under decoy names (dotnet_diag.exe,.cache_,.analytics_state), chmods it 0755, and spawns it detached through /bin/sh -c or cmd.exe. No hash or signature verification is performed, the destinations are not publisher-controlled and are obfuscated via string-array reconstruction, and env-var opt-outs are used to skip execution in sandboxes. The package name mimics @docusaurus/plugin-content-docs, but the shipped code has no relation to the documented plugin — its only effect on require is fetch-and-execute of an attacker-controlled binary.
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 boxy-docusaurus-plugin-content-docs-light (version 35.3.7). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging boxy-docusaurus-plugin-content-docs-light across your stack and pipelines.
If you installed it — respond
boxy-docusaurus-plugin-content-docs-light 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 boxy-docusaurus-plugin-content-docs-light 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 boxy-docusaurus-plugin-content-docs-light 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 boxy-docusaurus-plugin-content-docs-light-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.