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)
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
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Search your lockfiles and build artifacts for dp-owners (version 35.2.6).
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.
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
Campaign
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.