Top file variants for spwriter.exe

Users	Filename	Product	Company	Version	Variant
31.65%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 12 \ BIN \ spwriter.exe	Windows SharePoint Services	Microsoft Corporation	12.0.6500.5000	314473
29.11%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.7005.1000	20855931
16.46%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.4762.1000	5089711
6.33%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.6120.5000	12197094
3.8%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 12 \ BIN \ spwriter.exe	Windows SharePoint Services	Microsoft Corporation	12.0.6413.1000	89324
3.8%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 12 \ BIN \ spwriter.exe	Windows SharePoint Services	Microsoft Corporation	12.0.6211.1000	1191119
2.53%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.7005.1000	22233871
2.53%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 15 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	15.0.4420.1017	29585350
1.27%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.4762.1000	25680191
1.27%	%PROGFILES64% \ Common Files \ Microsoft Shared \ Web Server Extensions \ 14 \ BIN \ spwriter.exe	Microsoft SharePoint Foundation	Microsoft Corporation	14.0.6114.5001	6506873
1.27%	%COMMONFILES% \ microsoft shared \ Web Server Extensions \ 12 \ BIN \ spwriter.exe	Windows SharePoint Services	Microsoft Corporation	12.0.4518.1016	21345454

You can also check global information about spwriter.exe.