How to find a virus on the net?

Question

Computer networks

There is a peer-to-peer Windows network of ~ 30 computers, a "server" with a shared network folder.
Periodically, some kind of infection, among other nasty things, changes the attributes of this network folder to “system hidden”. Checking the server for viruses did not find any, but I don’t want to check all computers.

Is there any way to find out on which computer the virus is located? How to prohibit changing the attribute and alert when you try to change it with the address of the computer?

Answer 1

set up an audit on a shared folder on the success of writing attributes
in event logs in security, task category: “file system” there will be events which user has changed file attributes

Answer 2

And this is definitely a virus, and not some arrogant user?

Answer 3

Rearrange the server operating system - update to the maximum, install an antivirus.
remove full access rights to the network share (not to be confused with ntfs rights), and there most likely are full ones.
rearrange in turn all the other stations with the installation of all updates on Windows, installing an antivirus and at the same time taking away admin rights from the user in order to run less through the stations.
consider a dedicated server

Answer 4

find out - nothing. only checking and updating all pc