I have a question regarding Cryptowall and external drives. I was working on my neighbor's laptop preparing to do a rebuild by copying off files onto my external USB drive. I copied several GB's of data onto my Seagate USB drive before I noticed that the machine was hit with ransomware/Cryptowall. I had the (3) distinct files in most every root folder. I also went to the URL that it provides and it requested $700 for the decrypt file. I tried to open a password txt file on my external drive that had been copied from the infected machine to see if it was infected and it was unreadable, same with pic files etc. That was stupid thinking about it now but hindsight is 20/20.
So my question is now that I wiped that computer clean did the ransomware virus attach to my external drive? I have data, client files and ISO's that I would like to keep but not worth infecting my work computer to test. I read a few post that say Cryptowall can/does infect external drives and others say that you should be fine. I was wondering if I plug USB drive in and delete the folder where all the backup files were without launching any files would the drive be fine or would it possibly infect the computer that I attach it to?
Thanks for your replies!