Because "53602.rar" is not a recognized standard file, you should treat it with a healthy dose of skepticism if you found it unexpectedly on your system or in an email.
Before extracting the contents, run the file through a tool like VirusTotal , which checks the file against dozens of different antivirus engines. 53602.rar
Many server systems and database tools generate archives using timestamps or sequential ID numbers. A file named "53602" could simply be the 53,602nd backup generated by a specific script. Because "53602
