uisp-connectornpm
Advisory published Updated
uisp-connector is a confirmed malicious npm package (MAL-2026-5288) that steals credentials and exfiltrates sensitive data (malicious versions 0.0.1-security-research, 0.0.2-security-research, 99.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in uisp-connector (npm)
What this malware does
package.json declares preinstall: node index.js || true, causing index.js to run automatically on npm install. index.js issues a DNS resolution and HTTPS GET to a unique subdomain under oast.online (an Interactsh out-of-band collection server). The callback reveals the installer's resolver IP, egress IP, and the fact that an internal build system fetched a package matching this name — the canonical dependency-confusion exfiltration signal. The README self-identifies the package as security research, and the version string contains security-research, but an installer cannot distinguish authorized research from real exploitation: the network beacon and information disclosure happen identically in both cases, and whoever controls the Interactsh subdomain receives the data.
The OpenSSF Package Analysis project identified 'uisp-connector' @ 99.0.0 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for uisp-connector (3 malicious versions).
If you installed it — respond
uisp-connector 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 uisp-connector 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks uisp-connector-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.