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Malicious package

dp-ownersnpm

Advisory published Updated

dp-owners is a confirmed malicious npm package (MAL-2026-13200) that typosquats a legitimate package to trick installs (malicious version 35.2.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dp-owners (npm)

MAL-2026-13200
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dp-owners

What this malware does

On require() of dp-owners, init.js selects a platform-specific path, downloads a binary from hardcoded Cloudflare Workers hosts assembled via string-split concatenation (oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS TXT chunked-base64 fallback under *.dl.wel1.ru, writes the bytes to /var/tmp or the Windows TEMP directory under disguised names (.cache<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), chmods the file 0755, and spawns it detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. Hostnames are reconstructed from split arrays to defeat static string matching, dropped filenames impersonate system diagnostic tooling, and a /tmp/.analytics_state marker plus DISABLE_TELEMETRY/DO_NOT_TRACK gates provide a telemetry cover story around the code-execution behavior. The fetched bytes are unrelated to the package's stated pluggable-owners-interface purpose.

Malicious versions

1 flagged
35.2.6

Indicators of compromise (SHA-256)

09f190519e55e1e9899983a76806e839baf855abf0a0120e83bcac5547405c09

Detection & response playbook

Typosquat
  1. Find it

    Search your lockfiles and build artifacts for dp-owners (version 35.2.6).

  2. If you installed it — respond

    dp-owners is a typosquat — you almost certainly intended a legitimately-named package. Remove dp-owners, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If dp-owners was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. dp-owners on npm has been identified as a malicious package (version 35.2.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015577

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dp-owners-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.

Explore

dp-owners (npm) malicious package — MAL-2026-13200 | O3 Security