@klapp-login-platform/routesnpm
Advisory published Updated
@klapp-login-platform/routes is a confirmed malicious npm package (MAL-2026-5415) that steals credentials and exfiltrates sensitive data (malicious versions 99.0.0, 99.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in @klapp-login-platform/routes (npm)
What this malware does
On npm install, the package's preinstall lifecycle hook executes index.js, which collects the installer's hostname, username, package install path (__dirname), current working directory, and package name, serializes them to JSON, hex-encodes the result, and exfiltrates the data through two channels: DNS lookups against subdomains of d8jbmnsqcfu78dfs8vdg34ohqhirb4pbg.oast.live (an Interactsh out-of-band callback host) and an HTTP POST to the bare IP endpoint http://172.201.213.59:9090/c. The package ships almost no functional code; its purpose is the beacon. The scope @klapp-login-platform paired with an inflated 99.0.2 version and a generic routes name fits the canonical dependency-confusion pattern of publishing a high-version public package to shadow an internal private package of the same name, causing affected build environments to resolve and install this attacker-controlled release.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for @klapp-login-platform/routes (2 malicious versions).
If you installed it — respond
@klapp-login-platform/routes 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 @klapp-login-platform/routes 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
Detect & block this
O3 blocks @klapp-login-platform/routes-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.