I purchased some software on eBay, and the installation instructions included activating the product with an executable file on the DVD, called "Activation.exe". Norton Internet Security scanned this file and reported "no threats detected", so I executed the file. It displayed some lines of text in a command window, and acknowledged that activation was successful. The software appeared to have been activated, but later, when I attempted to register the software onlline, the software vendor informed me that the serial number was not valid. So, I think this is a pirated version, and am concerned that Activate.exe may contain malware. I'm wiping my system drive, but I'd like to know if some harm may have occurred in the meanwhile, such as remote access to data on my computer.
If an expert has the facility to test it, please rename the attached file from Activation.txt to Activation.exe and advise me if my computer's security has been compromised.