sinoquest99[.]com

This domain, sinoquest99.com, is a confirmed brand impersonation site targeting the Steam platform. The site was designed to trick users into believing they were accessing a legitimate Steam login page, thereby compromising their account credentials and potentially leading to unauthorized access and further malicious activities.

Analysis indicates that the domain was created on November 04, 2025, and is registered through Name SRS AB. It has been flagged by 12 out of 95 security vendors on VirusTotal, signaling a significant level of suspicion. The domain is currently offline and has been taken down, but it remains listed on two security blocklists, PhishDestroy and PhishingDB. Infrastructure analysis reveals that the domain was hosted in the United States, under the IP address 172.67.149.228, which is associated with AS13335 Cloudflare, Inc. Notably, the site did not use an SSL certificate, which is a common indicator of a phishing site.

If a user has visited sinoquest99.com and entered their Steam credentials, they should immediately change their password and enable two-factor authentication (2FA) on their Steam account. Users should also monitor their account for any unauthorized activity and report any suspicious logins to Steam support. Additionally, it is recommended to scan their device for malware using a reputable antivirus solution, as phishing sites often attempt to distribute additional malicious software.