Windows 10: Is it possible to get infection with a crdownload file?

I recently visited a site then a file was automatically downloaded as a crdownload the ask me what to do with each download feature was active on Edge. I scanned the file with m.defender and it was clean. Is it possible that I have infection?

:)

 

Microsoft Safety Scanner > Files Infected count

There's a bit of a UX problem with the scanner. As it is running it may encounter files that are suspected of being infected but indicate a count as: "Files Infected: XX"

This suggests the files are infected and apparently no list of these potentially infected files are provided.

1. Change the label to "Possible Infected Files"
   
2. Write to the msert log the list of possibly infected files for further review/action.
   

I say this as I let the tool run for over 3 hours, racking up over 20 "Files Infected". My computer was disconnected from the Internet during the scan. So I was surprised that the files in question were somehow "cleared" despite a lack of Internet connection.

From the log:

Results Summary:

----------------

No infection found.

Failed to submit MAPS report: 0x80072EE7

Failed to submit clean hearbeat MAPS report: 0x80072EE7

Microsoft Safety Scanner Finished On Sun Apr 30 13:20:56 2023

If the suspected files couldn't be submitted, then how were they cleared? Which files were suspected?

I appreciate the tool just cannot trust the results.

 

clean possibly infected flash drives and CD-RWs

Your steps in post #1 should work for 99% of viruses that may be on a usb flash drive. However, there are a very few viruses that can infect the MBR of a drive. I would use Diskpart from a command prompt (Admin) to clean them. In the command prompt type DISKPART then, at the Diskpart prompt use the commands:

LIST DISKnote the disk number of the usb and use it in place of # in the command:SELECT DISK #
CLEAN
CREATE PARTITION PRIMARY

After this you will have cleaned the partition table from the usb and created a partition using the whole of the the available space. You can then format this partition in File Explorer.


For a CD-RW, if you right-click on it in File Explorer there is an Erase option.

 

Is .CRDOWNLOAD a virus?

When you download a file with edge it gets a temporary name with .crdownload extension. When the download completes it is renamed to its actual file extension.

What you have is part of an incomplete download that can be safely removed.