Attackers often use "double extensions" inside the archive (e.g., wallpaper.jpg.exe ) to trick users into running a program instead of opening an image [1]. Recommended Actions
Archives with these names are often found to contain the RedLine Stealer or Lumine malware, which targets your saved passwords, browser cookies, and crypto wallets [1, 2]. cool_wallpapers.rar
If you haven't opened it, delete the file immediately . Attackers often use "double extensions" inside the archive
If you still have the file, upload it to VirusTotal to see if multiple antivirus engines flag it as malicious. which targets your saved passwords
High . Filenames like this often appear in malicious advertisements or "cracked" software sites [2].