If you can tell me or what you expected it to do , I can try to find more specific information.
Here is an analysis based on the potential nature of such a file: mortalcicada.7z
A custom game mod or level (e.g., for a "Mortal Kombat" or similar game). An indie horror game or digital art project. An Alternate Reality Game (ARG) component. If you can tell me or what you
Scan it immediately with reputable, up-to-date antivirus software. " this could be related to:
Given the name "Mortal Cicada," this could be related to: