I've had a portable .exe of Auslogics Disk Defrag Portable sitting in a folder on my PC for years, and frequently used it. The most recent time I used it a few days ago, out of nowhere Windows Defender marked it as malicious. I went into Windows Security center and told it to allow/restore it, but after I rebooted my computer today for the most recent Windows Update, it's gone! That leads me to two questions:
#1: Is it feasible that this portable app has had some hidden trojan all these years and only now is it being properly picked up by anti-virus scanners, or is it most likely just a sudden false positive? I uploaded the file to Jotti and VirusTotal before it disappeared, and there were several AVs flagging it as malicious. So it's not just Windows Defender acting up. Again, this is a file I've had for years. It's not like I just downloaded a new or updated version that changed the code.
#2:Does anyone know how to restore a file that Windows Defender got rid of? I don't see the usual "allow" or "restore" options in Windows Security. In fact, Windows Security tells me that it failed to remediate the problem. I'm attaching relevant screenshots if it helps to see what I'm seeing.


EDIT: Nevermind about #2. I had a backup in my Dropbox folder.
#1: Is it feasible that this portable app has had some hidden trojan all these years and only now is it being properly picked up by anti-virus scanners, or is it most likely just a sudden false positive? I uploaded the file to Jotti and VirusTotal before it disappeared, and there were several AVs flagging it as malicious. So it's not just Windows Defender acting up. Again, this is a file I've had for years. It's not like I just downloaded a new or updated version that changed the code.
#2:
EDIT: Nevermind about #2. I had a backup in my Dropbox folder.










