Rtool.rar -

If you've already opened or extracted the file, please tell me:

Based on common cybersecurity threat intelligence and file-naming conventions, is highly likely to be a malicious file [1]. RTool.rar

disconnect your computer from the internet immediately to prevent data exfiltration, and run a scan in safe mode. If you've already opened or extracted the file,

What is your computer showing (e.g., slowing down, weird popups, missing files)? Did you run a scan with an antivirus program? RTool.rar

If you received this via email, mark it as phishing/spam and delete it.