I downloaded McShield and run the program, attaching my USB drive as well. That is D:/
The attached file is its log. It is copy/paste here as well.
>>> MCShield AllScans.txt <<<
-----------------------------
MCShield ::Anti-Malware Tool::
http://www.mcshield.net/>>> v 3.0.5.28 / DB: 2016.2.21.1 / Windows 8.1 <<<
12/28/2018 5:52:42 PM > Drive C: - scan started (no label ~98 GB, NTFS HDD )...
=> The drive is clean.
12/28/2018 5:52:42 PM > Drive E: - scan started (no label ~171 GB, NTFS HDD )...
=> The drive is clean.
12/28/2018 5:52:42 PM > Drive F: - scan started (no label ~197 GB, NTFS HDD )...
=> The drive is clean.
MCShield ::Anti-Malware Tool::
http://www.mcshield.net/>>> v 3.0.5.28 / DB: 2016.2.21.1 / Windows 8.1 <<<
12/28/2018 5:54:02 PM > Drive D: - scan started (no label ~29313 MB, FAT32 flash drive )...
=> The drive is clean.