infected log files in the database

Copper Contributor

Trojan  log files in the database, the backup is also damaged, can you help me? I also find something not clear in the following path: screen1 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ASP.NET_4.0.30319\Names
Trojan bases are damaged, and phishing, how can I recover?  What steps to take to minimize the consequences?



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OS builds: 17763.3287 windows server standard 2019

exchange server 2019  ProductVersion FileVersion FileName
-------------- ----------- --------
15.02.0986.015 15.02.0986.015  cu 11


security update for exchange server 2019 cu 11 (kb5008631)