m---trrzur-start-sso-auth[.]webflow[.]io

This domain, m---trrzur-start-sso-auth.webflow.io, is currently active and involved in a credential theft campaign impersonating Microsoft authentication portals. Analysis indicates the infrastructure is designed to harvest login credentials by mimicking legitimate single sign-on (SSO) workflows, a tactic commonly associated with enterprise-targeted phishing operations. The domain’s design and naming convention strongly suggest an intent to deceive users into entering sensitive account details under the guise of Microsoft’s identity services. Infrastructure analysis reveals the domain was registered on May 8, 2013, through MarkMonitor, Inc., a registrar frequently utilized for both legitimate and malicious purposes. It resolves to the IP address 172.64.151.8 and is secured with an SSL certificate issued by Google Trust Services, which may lend an appearance of legitimacy. However, the domain has been flagged by 7 of 95 security vendors on VirusTotal, indicating detection by multiple threat intelligence sources. No additional blocklist entries or trust scores were identified in public datasets, but the combination of its age, registrar, and SSL provider does not mitigate the observed malicious activity. Current status confirms the domain remains active and operational, posing an ongoing risk to users. Organizations are advised to block access to this domain at the network perimeter and update endpoint protection rules to include its IP and domain as indicators of compromise. Security teams should monitor for authentication attempts originating from this infrastructure and conduct retrospective log analysis to identify potential credential exposure. Users who may have interacted with the domain should be directed to reset their credentials immediately and enable multi-factor authentication on all associated accounts.