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Malicious package

fundraiserservppnpm

Advisory published Updated

fundraiserservpp is a confirmed malicious npm package (MAL-2026-12386) that opens a backdoor for remote access (malicious versions 1.9.0, 2.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in fundraiserservpp (npm)

MAL-2026-12386
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall fundraiserservpp

What this malware does

[email protected] runs node index.js as a preinstall lifecycle script on npm install. The script collects host metadata from the installer machine — os.hostname(), os.platform(), os.arch(), the user home directory path, and configured DNS servers — and issues an HTTPS POST to a hardcoded Burp Collaborator subdomain (mrh99ucv1u3kyeba1020ae2t7kdc12pr.oastify.com/hit) with that data as a JSON body. The beacon fires automatically at install time with no user interaction. The destination is an attacker-controlled out-of-band interaction endpoint typical of dependency-confusion reconnaissance, confirming to the operator that the package name was successfully resolved and installed inside a target build environment.

Malicious versions

2 flagged
1.9.02.0.0

Indicators of compromise (SHA-256)

542a9a32b033b5188849fa81e6ec448528308f1251256d861ee7917a7cdcb473
0bca913238607a18079a675e2fe652c25c04c2bbc62f5c577bb2b6d2424cd4a8

Detection & response playbook

Backdoor / remote access
  1. Find it

    Search your lockfiles and build artifacts for fundraiserservpp (2 malicious versions).

  2. If you installed it — respond

    fundraiserservpp 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 fundraiserservpp 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. fundraiserservpp on npm has been identified as a malicious package (versions 1.9.0, 2.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014837IN-MAL-2026-015807

References

Credits

  • Amazon Inspector · finder

Detect & block this

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

Explore

fundraiserservpp (npm) malicious package — MAL-2026-12386 | O3 Security