NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
Malicious package

dolyame-ui-react-dom-wrappernpm

Advisory published Updated

dolyame-ui-react-dom-wrapper is a confirmed malicious npm package (MAL-2026-13178) that opens a backdoor for remote access (malicious version 35.8.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dolyame-ui-react-dom-wrapper (npm)

MAL-2026-13178
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dolyame-ui-react-dom-wrapper

What this malware does

On require of the package's main entry, helpers.js selects a platform-specific target path, fetches an opaque binary over HTTPS from author-controlled Cloudflare Worker subdomains (oob-worker.cf99-9b3.workers.dev, cf103-070/cf100-416/cf102-baf.workers.dev) with a DNS-based fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the bytes to /tmp or %TEMP% under disguised names ('.cache<rnd>', 'dotnet_diag_<rnd>.exe'), chmods 0755 on Unix, and detached-spawns the file via '/bin/sh -c <path> &' or 'cmd /c start'. C2 hostnames and sensitive API names (child_process, chmodSync) are assembled at runtime from split-string arrays joined with '' to defeat static analysis. A second copy of the same fetch → base64 → chmod 0755 → detached-spawn chain, with identical string-concatenation obfuscation of 'child_process', is bundled in lib/telemetry.js as a parallel dropper. Any installer that requires this package executes attacker-controlled binaries with the user's privileges.

Malicious versions

1 flagged
35.8.9

Indicators of compromise (SHA-256)

3c3f53ba29324123e792649baa012f91a2a980590dea560599490d8020b6274b

Detection & response playbook

Backdoor / remote access

  1. Find it

    Search your lockfiles and build artifacts for dolyame-ui-react-dom-wrapper (version 35.8.9).

  2. If you installed it — respond

    dolyame-ui-react-dom-wrapper establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If dolyame-ui-react-dom-wrapper 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. dolyame-ui-react-dom-wrapper on npm has been identified as a malicious package (version 35.8.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015595

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks dolyame-ui-react-dom-wrapper-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
dolyame-ui-react-dom-wrapper (npm) malicious package — MAL-2026-13178 | O3 Security