Actually we found it, seems it was on the very last machine and found at the very end of the scan lol. Yes we have backups. This particular client is rather hard headed and won't listen to us when we tell them to close RDP and use a VPN, as a result they have been slammed 4 times by ransomware in the last few years. We have recovered them each time it has happened, but it grows tiresome going through this ritual. Thanks for the replies