Hello
Since you've finished cleaning your computer from infection then a need extra precaution from the rest of habits
, as stated on downloading malware samples then suggest to test them on virtual Machine (Virtualbox or Vmware Player) or Sandboxie but remember any data stealing will not be revert.
Seems you have likely a companion AV-based (Indonesia based) well there's nothing wrong as long it can protect against from accident clicks.
On demand scanner is no harm at all, just once a week is fine: MBAM and Hitman Pro/Emsisoft Emergency Kit/Zemana AntiMalware (choose one). But if you don't want then store at USB and use in case of emergency