dolyame-ui-iconspacknpm
Advisory published Updated
dolyame-ui-iconspack is a confirmed malicious npm package (MAL-2026-13572) that executes malicious code on install (malicious version 35.8.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in dolyame-ui-iconspack (npm)
What this malware does
The package is published as an icon pack / data-transformation utility, but index.js unconditionally loads shim.js on require, which assembles Cloudflare Workers hostnames from split string fragments (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT base64 fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru, downloads a platform-specific binary, writes it to /var/tmp/.cache<hex> or %TEMP%/dotnet_diag_<hex>.exe, chmods it to 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. lib/telemetry.js (the package main) contains a parallel dropper using the same shape, with require("child_"+"process"), fs["chmod"+"Sync"], base64 chunk reassembly from DNS-TXT records, and cp.spawn("/bin/sh", ["-c", filePath+" &"]). Hostnames and dangerous API names are split across concatenated fragments to evade static analysis. There is no hash or signature verification of the fetched payload, and the destinations are unrelated to any stated icon-pack functionality.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for dolyame-ui-iconspack (version 35.8.1).
If you installed it — respond
Remove dolyame-ui-iconspack 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-ui-iconspack 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 dolyame-ui-iconspack-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.