We don't have near enough info to declare this computer safe or clean.
Your are absolutely correct. Not enough information.
Maybe the OP will get back to you.
I'm not holding out much hope for a slow and methodical examination of this incident.
This remote admin tool (RAT) has the ability to transfer files in both directions without additional warnings after the initial screen is accepted:
We don't know if the OP placed a check by "Remember my answer for this operator"* or what options were agreed to. We don't even know if the person that called the OP ever took remote control of the computer in question. If so, did that person run any apps? That kind of seems important.
*removing the ammyy folder from the programdata area makes the app "forget".
After the incident:
We don't know if the computer was taken off of the network while the issue is being worked.
We don't know what browser was used to download the RAT (which might help us to find the log file). That said, the logging seems to only detail errors. A successful transfer of files would not be logged :-(
I could have handled this thread better. I'm not thinking all that clearly after staying up all night clearing stubborn infections (via remote control) from two computers that I support. More poor marks for MSE :-(
I should have made my first post to this thread read something like:
You may feel panicked right now, but the best course of action is to slow down and do nothing without careful consideration. Leave the computer in question turned off until we develop a plan to examine it.
I also should have stopped going forward until my questions were answered. Specifically, was the computer off of the network.
Ammyy makes a legit RAT that is used by lots of companies. There are many other RATs that operate in much the same way (e.g. nothing to install, convey your ID to the other person to allow remote control).