You can check if the SupportSoft Container is associated with Comcast or it is the data recovery software.
SupportSoft Container is an identifier used by C:\Program Files\Comcast\Desktop Doctor\agent\bin\bcont_nm.exe.
This file is used by Comcast's ISP application Desktop Doctor to communicate your system details with Comcast technical support.
The software is supposed to solve the most common technical problems by prompting the user to download patches or drivers. You should always be very careful about communicating such detailed system information with an outside party.
Also it can be software used for data recovery. You can refer to the below links for assistance -