Smartsteamloader X64.exe Extra Quality Download [upd] Link
Security researchers have noted that SmartSteamLoader.exe is frequently flagged by antivirus engines. While some of these are "false positives" due to the nature of DRM-bypassing software, others may be legitimate threats from untrusted sources.
For advanced users: the loader works by intercepting Steam API calls. It creates a virtual Steam environment, spoofing ownership of specific apps. The X64 version uses: Smartsteamloader X64.exe Extra Quality Download