Xxel.iss.axx.zip

: Once extracted, you will need the AxCrypt software to open the .axx file. You must have the password that was used to secure it.

: This is the likely name of the original file before it was encrypted and zipped. While ".iss" often refers to InstallShield Silent Response files used for automated software installations, it can also be a custom naming convention. How to access the contents: XXEl.iss.aXX.zip

: Use a tool like WinZip , 7-Zip, or the native "Extract All" feature in Windows or macOS. : Once extracted, you will need the AxCrypt

The file appears to be a compressed archive containing an encrypted file. Based on the file extensions, : Once extracted