dolyame-boxy-scrollnpm
dolyame-boxy-scroll is a confirmed malicious npm package (MAL-2026-13130) that executes malicious code on install (malicious version 35.9.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in dolyame-boxy-scroll (npm)
What this malware does
On require('dolyame-boxy-scroll'), index.js loads ext.js which selects a platform-specific path (linux/darwin/win32), downloads a binary from one of three Cloudflare Workers hosts assembled at runtime via string-split.join() (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev), writes it to /var/tmp or %TEMP% under a disguised name (.cache<rand>, dotnet_diag_<rand>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b (_ext.js line 122-128). A DNS-TXT fallback channel reconstructs a base64 payload from concatenated TXT records at sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru when the HTTPS fetch fails. The fetched bytes are not pinned, hashed, or signature-verified. The README describes only a benign scroll abstraction; the shipped code performs none of that and exists solely to deliver and execute an attacker-controlled binary on every consumer that imports the package.
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 dolyame-boxy-scroll (version 35.9.9). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging dolyame-boxy-scroll across your stack and pipelines.
If you installed it — respond
Remove dolyame-boxy-scroll 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 dolyame-boxy-scroll 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 dolyame-boxy-scroll 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 dolyame-boxy-scroll-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.