.koti Ransomware encrypted file Decryption

[NAVAS 0]

Hi frinds.

my system infected a ransomware & encrypted all fiels as filename.koti 

i have do backup infected files such as pictures and excel files

i have formated my pc to ger rid of ransomware

then used EMSISOFT DECRYPTOR FOR STOP dvju

it showing  

"File: H:\phone backup\Android\data\com.zhiliaoapp.musically\cache\picture\fresco_cache\v2.ols100.1\6\2U6JaSd2VhHD2X1ya5h9v5rLg_w.cnt.koti
No key for New Variant offline ID: bQzou4YCQGWMhQnYUmmzNP6cr4msBmV2AwESnrt1
Notice: this ID appears be an offline ID, decryption MAY be possible in the future"

like messages for all files 

HOW I DECRYPT FILES

2 Manjeri Old Building.xlsx.koti 3 manjeri out side.xlsx.koti 20d369ebb449ac01703d47a706606477.jpg.koti 51944_dev-joshi-baal-veer.jpg.koti

Edited May 30 by NAVAS
to upload sample encryped files

[GT500 823]

19 hours ago, NAVAS said:

No key for New Variant offline ID: bQzou4YCQGWMhQnYUmmzNP6cr4msBmV2AwESnrt1
Notice: this ID appears be an offline ID, decryption MAY be possible in the future

This is a newer variant of STOP/Djvu. Fortunately your ID is an offline ID, however we don't yet have the private key for it. I recommend running the decrypter once every week or two so that you can see when we've been able to add the private key for your variant.

There is more information at the following link:
https://support.emsisoft.com/topic/32045-about-the-stopdjvu-decrypter/