This is the stock recovery image extracted from latest MIUI 8 Developer build that you can flash it to your shinny Redmi Note 4 Qualcomm Snapdragon variant (Codename Mido). Please bear in mind that the recovery image below is NOT for its MediaTek variant. This file may be important and will come in handy when you have installed custom recovery like TWRP but then you want to revert back to its official recovery tool. The file is extracted by Clayton_wwc for all Redmi Note 4 users around the world. This original MIUI stock recovery is flash-able through TWRP or ADB interface.
Also read: Stock Recovery for Mi Mix.
Simply download the zip file and extract it to grab the .img file. The file is original and untouched. However, you are free to re-scan it using your favorite antivirus software in your computer.
Again, do not flash the .zip file. Use its .img file from the extraction.