Yes I also have this exact problem.
Would be interesting to know how others have fixed it and whether the problem has come back??
After doing some research I intend to do a hard reset by putting a jumper on the mainboard.
There is a process on the internet that describes how to do this. As the NVR is remote I need to make the trip to test this (could be a week or so).
If you do a search on the internet you will see that vulnerabilities in the AVTECH software were apparently exposed quiet some time ago and AVTECH didnt respond until the virus started to take hold.
There is a security company is Singapore who has posted information on the problem and a short term fix. Try searching "fixing AVTECH firmware issues - lakson. I would post the link but Im not sure thats allowed.
Once I get into the system I will change the username and password (again), update the software and instal a VPN. Hopefully that will fix it.
The uncertainty I have is whether I can force a reset by completing the jumper process to T5 and T6 on the mainboard. Only time will tell on that part.
Todate I havent received any help from AVTECH who I guess are inundated with requests for advice.
