These files are often used to distribute malware, credential stealers, or Trojan horses designed to hijack your Steam account and steal personal information.

Run a full system scan using reputable antivirus software (e.g., Malwarebytes, Windows Defender).

Change your Steam password and, if possible, from a different, clean device.

If you have already downloaded, extracted, or run a file named "Autologin Steam.rar":

Change passwords for any other sensitive accounts (email, banking) that were accessed on that computer. Better Alternatives for Account Management

If you have multiple accounts and need to switch between them easily, use authorized methods: For managing multiple accounts securely.

Do not download or run unfamiliar .rar or .exe files claiming to automate login processes. How to Safely Enable Auto-Login in Steam