If you already opened the file, run a full system scan with a reputable antivirus like Microsoft Defender or Malwarebytes .
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
The file is a generic filename frequently used by attackers to distribute malware, including info-stealers, ransomware, or trojans . Because .rar files are compressed archives, they can easily hide executable threats that bypass basic browser filters. Security Assessment If you already opened the file, run a
If you haven't opened it, delete the file immediately . If you already opened the file
If you still have the file, upload it to VirusTotal to see if multiple antivirus engines flag it as malicious.