change file in folder based on another input field value

Dear All,

I am looking for some file processing option to do the following:

Input data:

I want to replace the names of the images under “D:\Users\rparuchuri\Desktop\Test\Images1\” with the ‘checksum’ field. So the output should look like this:

Outputdata:


Can someone help me which file processing function to use? the main help I need here is to rename the the images under the folder ?