Strange folder appeared in external drive root

Folder's name's "##@ghumeaylnlfdxfircvscxggbwkfnqd"

Only started noticing after secure wipe operation on folder with large number of files completed . What is this folder ? Wy did it show up ? What can i do to be rid of it ?

• Folder won't delete when i try
• Running windows AME . Think it removed defender , so can't check if it's malware
• Health status of drive returns "Good"