Perhaps some of these paths will give you a better idea, this was my first iteration before I went a bit more specific:
Epicor Servers - If you have AV on Server
X:\Epicor\*
X:\inetpub\wwwroot\EpicorERP\*
X:\InsiteShip\*
X:\Program Files (x86)\Common Files\Epicor Software Corporation\*
X:\Program Files (x86)\Common Files\Epicor Software\*
X:\Program Files (x86)\Common Files\Epicor\*
X:\Program Files (x86)\Epicor Software\*
X:\Program Files (x86)\Insite Software\*
X:\Program Files (x86)\Microsoft SQL Server\*
X:\Program Files (x86)\Seagull\*
X:\Program Files\Microsoft SQL Server\*
X:\ProgramData\Epicor Software Corporation\*
X:\ProgramData\Epicor\*
X:\ProgramData\EpicorSearch\*
X:\APM\*
X:\Applications\EKM\*
X:\BarTender Formats\*
X:\BarTenderData\*
X:\BarTenderTaskList\*
X:\Epicor\*
X:\Epicor\ERP10\*
X:\Program Files (x86)\Insite Software\*
X:\SQLDATA\*
X:\Website\EpicorERP\*
X:\Website\EpicorERP-EMA\*
X:\Website\EpicorERP-Help\*
X:\SQLDATA\*
Epicor Clients
C:\ProgramData\Epicor\*
C:\Program Files\Epicor Software\*
C:\Program Files(x86)\Epicor Software\*