eng-suite-treor-doc[.]teachable[.]com

eng-suite-treor-doc.teachable.com is an active brand‑impersonation site that purports to offer “Desktop & Web⁕ Crypto Management”. The domain was registered on 21 February 2026 through Amazon Registrar, Inc. and resolves to 34.54.192.65, an address owned by Google LLC (AS396982) located in the United States. DNS resolution is handled by Cloudflare nameservers ian.ns.cloudflare.com and nina.ns.cloudflare.com, while the web server delivers content over HTTPS using a Google Trust Services / WR3 certificate and enforces HSTS. The site is hosted on Google Cloud, employs Google Cloud CDN and HTTP/3, and uses Mailgun for outbound email. An HTTP 200 response is returned for the landing page, and the page title explicitly references “Desktop & Web⁕ Crypto Management”, matching the declared impersonation of the Sui brand. The domain appears on one security blocklist and is listed by PhishDestroy as blocked. Reputation services rate the site at 0/100 on Gridinsoft, and five of ninety‑five VirusTotal scanners have flagged it as malicious. Evidence confirms that the infrastructure is intentionally leveraged to mimic Sui‑related crypto management services, but the exact payload, credential‑stealing mechanisms, or victim interaction flow have not been publicly disclosed. Defenders should block the domain and associated IP address at network perimeters, monitor outbound Mailgun traffic for suspicious mail originating from the domain, and update detection rules to flag TLS connections to the Google Trust Services certificate presented by this host. Continuous monitoring of Cloudflare DNS changes and any new security‑vendor detections is recommended, as the operators may shift hosting or alter the domain‑fronting technique.