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Malicious package

dolyame-ui-containernpm

dolyame-ui-container is a confirmed malicious npm package (MAL-2026-13150) that steals credentials and exfiltrates sensitive data (malicious version 35.3.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dolyame-ui-container (npm)

MAL-2026-13150
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dolyame-ui-container

What this malware does

On require of the package, index.js loads compat.js, which at module load time downloads a platform-specific binary from hostnames assembled at runtime via string-splitting (oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev). If HTTPS mirrors fail, it falls back to a DNS-over-TXT covert channel, resolving TXT records under *.dl.wel1.ru subdomains and base64-decoding the concatenated response into a binary. The fetched payload is written to a disguised path under /tmp or %TEMP% (e.g. dotnet_diag<hex>.exe,.cache_<hex>), chmod 0755, and spawned detached via cmd.exe or /bin/sh -c with no hash or signature verification. Environment variable checks (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) and analytics-styled filenames provide cover. The destinations are not the publisher's infrastructure and the retrieval mechanism is inconsistent with any legitimate distribution channel.

Malicious versions

1 flagged
35.3.7

Indicators of compromise (SHA-256)

0b0f03a063fb3a6b8c7605612b587eddfefa6181b85b14654ee93f267dd790e1

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for dolyame-ui-container (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 dolyame-ui-container across your stack and pipelines.

  2. If you installed it — respond

    dolyame-ui-container is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If dolyame-ui-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-ui-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-ui-container on npm has been identified as a malicious package (version 35.3.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015635

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dolyame-ui-container-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

dolyame-ui-container (npm) malicious package — MAL-2026-13150 | O3 Security