Training in malware removal and learning how to use advanced tools is conducted at various online Unite Schools
after you are accepted and enrolled.
These are not typical training programs that one may participate in at college or a local Tech School. There are no special certificates or credits toward any specific degree but you will learn material they do not teach in college curricula. You work at your own pace under the guidance of experts so the actual length of training will vary depending on the effort you put forth.
If this is not acceptable to your employer or not what you are looking for, then just do a quick Google search for online security training
or online computer training and troubleshooting