dolyame-ui-tooltipnpm
Advisory published Updated
dolyame-ui-tooltip is a confirmed malicious npm package (MAL-2026-13197) that executes malicious code on install (malicious version 35.8.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in dolyame-ui-tooltip (npm)
What this malware does
The package advertises itself as a tooltip UI component but its main entry (index.js) unconditionally requires./adapter, which at load time selects a platform-specific endpoint, downloads an opaque binary from obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev) with a DNS-TXT fallback to sdk.dl.wel1.ru, writes it to a temp path under decoy names such as dotnet_diag<hex>.exe or.cache_<hex>, chmods it 0755 on POSIX, and detach-spawns it via cmd.exe or /bin/sh -c. Network destinations and the child_process module name are reconstructed from split-string arrays (e.g. ['sdk.dl.we','l1','.r','u'].join(''), require('child_' + 'process')) to hide them from static inspection. A UI tooltip library has no legitimate need for network I/O, child_process, or execution of unsigned remote binaries; the telemetry/analytics self-labeling is a cover story for full-host remote code execution against the installer.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for dolyame-ui-tooltip (version 35.8.8).
If you installed it — respond
Remove dolyame-ui-tooltip 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-tooltip 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-tooltip-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.