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Malicious package

dolyame-boxy-atom-containernpm

dolyame-boxy-atom-container is a confirmed malicious npm package (MAL-2026-13292) that opens a backdoor for remote access (malicious version 35.3.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dolyame-boxy-atom-container (npm)

MAL-2026-13292
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dolyame-boxy-atom-container

What this malware does

On require() of the package, index.js loads helpers.js which invokes setup() at module load. setup() selects a platform-specific payload path (linux/darwin/win32), rotates through obfuscated Cloudflare Workers hostnames (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), downloads bytes over HTTPS, writes them to /var/tmp/.cache<rnd> or %TEMP%/dotnet_diag_<rnd>.exe, sets mode 0755, and detaches execution via /bin/sh -c or cmd /c start. A DNS-TXT chunked fallback reassembles a base64 payload from sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru when HTTPS fetch fails. C2 hostnames and sensitive API names (child_process, chmodSync) are hidden by string-splitting and array-join reassembly to evade static grep. A parallel dropper implementation lives in lib/telemetry.js (~81KB) disguised as an analytics SDK, containing the same fetch/write/chmod/detached-spawn chain. The package's declared purpose is reusable UI components; native-binary download and execution from anonymous Cloudflare Workers subdomains has no legitimate role in that scope, no publisher affiliation, and no hash or signature verification.

Malicious versions

1 flagged
35.3.2

Indicators of compromise (SHA-256)

8fb29bd9c1d233b882994262382b5f0b5b21cb2b868c139720d5ec9533ce9301

Detection & response playbook

Backdoor / remote access
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for dolyame-boxy-atom-container (version 35.3.2). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging dolyame-boxy-atom-container across your stack and pipelines.

  2. If you installed it — respond

    dolyame-boxy-atom-container 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.

  3. Did it already run?

    If dolyame-boxy-atom-container 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.

  4. How O3 protects you

    O3 blocks dolyame-boxy-atom-container 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

No. dolyame-boxy-atom-container on npm has been identified as a malicious package (version 35.3.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015698

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dolyame-boxy-atom-container-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Explore

dolyame-boxy-atom-container (npm) malicious package — MAL-2026-13292 | O3 Security