rapidfilevault4[.]sbs

This domain, rapidfilevault4.sbs, is currently active and has been identified as a brand‑impersonation campaign targeting Cloudflare. The site presents the page title “Suspected Malware | Cloudflare”, which indicates an attempt to lend legitimacy by referencing the Cloudflare brand. Infrastructure analysis shows the domain resolves to the IP address 104.21.83.179, which is owned by Cloudflare, Inc. in Canada and is served through Cloudflare’s network, as reflected by the use of Cloudflare‑owned nameservers amalia.ns.cloudflare.com and carmelo.ns.cloudflare.com. The TLS certificate is issued by Let’s Encrypt (identifier YE2), a common free certificate authority, and the site returns an HTTP 403 status code, suggesting that direct content retrieval is blocked or restricted. Threat intelligence sources corroborate malicious activity: the domain appears on one security blocklist and is actively blocked by PhishDestroy, and AlienVault OTX lists it in six separate threat pulses. VirusTotal scans have flagged the domain by 21 of 91 security vendors, reinforcing the suspicion of malicious intent. Registration was performed through Dynadot Inc., a registrar that does not provide additional protective signals. While the exact payload or credential‑harvesting mechanism has not been publicly disclosed, the combination of brand impersonation, blocklist presence, and multiple vendor detections indicates a high‑risk profile. Defenders should add rapidfilevault4.sbs to URL filtering and DNS block lists, monitor outbound connections to its IP address, and consider isolating any internal traffic that attempts to reach the domain. Continuous threat‑intel feeds should be consulted for updates, and incident response teams should be prepared to investigate any alerts that reference Cloudflare‑related credential requests originating from this domain.