A user receives a security alert pop-up from the host-based IDS, and a few minutes later notices a document on the desktop has disappeared and in its place is an odd filename with no icon image. When clicking on this icon, the user receives a system notification that it cannot find the correct program to use to open this file.
Which of the following types of malware has MOST likely targeted this workstation?
A . Rootkit
B . Spyware
C . Ransomware
D . Remote-access Trojan
Answer: C