dolyame-ui-constantsnpm
Advisory published Updated
dolyame-ui-constants is a confirmed malicious npm package (MAL-2026-13149) that steals credentials and exfiltrates sensitive data (malicious version 35.5.9). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in dolyame-ui-constants (npm)
What this malware does
On require of the package, index.js loads _support.js which assembles Cloudflare Workers hostnames via split-string concatenation (["oob-work","er.cf101-adf.workers.d","ev"].join(""), plus cf102-baf and cf103-070 variants) with a DNS fallback to *.dl.wel1.ru. It downloads a platform-specific binary, writes it to /tmp or %TEMP% under deceptive names (.cache_<hex> on Linux/macOS, dotnet_diag_<hex>.exe on Windows to mimic a Microsoft diagnostic tool), chmods it 0755, and spawns it detached via cp.spawn("/bin/sh",["-c",fp+" &"],{detached:true}) (and spawn("cmd",...) on Windows). The payload is unsigned, unpinned, and unverified. Environment variables named DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, and DO_NOT_TRACK frame the behavior as telemetry, but the destinations, filename disguises, and execution pattern are dropper mechanics rather than telemetry. A second, larger parallel dropper implementation lives in lib/telemetry.js (base64-decoded buffers, fs["chmod"+"Sync"], split-string require("child_"+"process"), cp.spawn('/bin/sh',['-c',filePath+' &'])), staged for activation. Installing or requiring this package causes attacker-controlled code to execute on the installer's host.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for dolyame-ui-constants (version 35.5.9).
If you installed it — respond
dolyame-ui-constants 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.
Did it already run?
If dolyame-ui-constants 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-constants-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.