One of my infrequent customer sites developed a virus and before I could get over there, the user had already shut down the system and reformatted the system. I checked all the other systems and found nothing. I ran 3 different programs on a three of the machines (AVG free 2014, Panda online scan, and MalwareBytes) and found nothing but the odd cookie that appeared to be an issue but nothing else. The rest of the machines, I ran a full scan of MalwareBytes (and with AVG free running in the background) and all of them came up clean. There are about 10 machines in a workgroup and sharing data. I've run into most of the nasty viruses and have been able to resolve them (well other than the ransom virus) but if this is a virus, it has me stumped!
At this time, I don't know what the virus was (the original machine infected) since it was removed by the customer and they did not document it.
Since they were infected last week, Three of the machines have blue screened with the following error;
One of the machines that had this error, I ran the Dell diagnostics and it failed on the hard drive. The second machine that developed this error, I pulled the drive, brought it back to the office and threw it in a drive tray and did a scan on it with a machine that I have loaded with all sorts of virus scanning and ran full scans on it and found nothing.
With all of the scans that I did, I was certain that I did not miss anything. Is this a virus that none of the listed programs can't see?
All I can suggest at this time is for all the machines to run the diagnostics and if the hard drive passes, then to reformat those problem machines.
Has anyone else run into this?