vscode-designer-14npm
Advisory published Updated
vscode-designer-14 is a confirmed malicious npm package (MAL-2026-12497) that steals credentials and exfiltrates sensitive data (malicious version 14.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in vscode-designer-14 (npm)
What this malware does
package.json declares a preinstall hook that runs index.js on npm install. index.js collects the installer's hostname, username, home directory, DNS server configuration, package metadata, and the contents of /etc/passwd and /etc/hosts, then POSTs the collected data over HTTPS to the hardcoded host slh4v8u1tz6gjo447tgf9rl3xu3mrcf1.oastify.com (a Burp Collaborator OAST subdomain). The package has no legitimate functionality that would justify reading local system files or beaconing host identifiers to an out-of-band interaction service; the shape matches a dependency-confusion / typosquat exfiltration beacon.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for vscode-designer-14 (version 14.0.1).
If you installed it — respond
vscode-designer-14 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 vscode-designer-14 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
- ReversingLabs · finder
Detect & block this
O3 blocks vscode-designer-14-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.