Thanks for taking this on.
Firstly I would like to clarify my situation here and hope you will forgive me if I don't follow all your instructions to the letter.
As I said above, an unfortunate click on an infected email in hotmail (ie browser) triggered some unknown action on the laptop.
I am at IT professional, semi-retired now and well out of date with all that Windows' wizardry but still have a house full of computers and computer bits of all ages. All these computers are or have been connected to the home network at some stage. Some have had viruses removed by AV scanners recently or in the past.
Having now had a confirmed malware hit (hotmail was hijacked and sent the virus further), I am concerned about what could have happened locally with further infection over the LAN. I have a LAN printer and Android devices also. Since all the scans suggested by Broni did not find anything on the laptop, could it be some new malware not yet identified?
The bottom line is that I don't trust any of my computers anymore. However, I still need to check my email, pay my bills etc. so I need a clean machine. I pulled out a new motherboard and new sdd disk that I had bought for another project and started from scratch. This is not a newly bought computer from a retailer with all the bloatware that comes with it.
Install Windows 7 Home Premium from a generic install disk
Plugged into the LAN (firewall on as public network)
Installed MSE - ran full scan
fired up IE and proceeded to change my passwords on critical accounts
Ran Windows Update (which keept finding new stuff to update over the past 3 days)
Downloaded Sandboxie 3.76
Ran several full scan with MSE and MBAM along the way.
Assuming that the machine is still clean I started browsing but only sanboxed
While on bleepingcomputer.com, I was shocked to see an Adobe Update pop up.
I revisited the threat since my first post and the message did not appear.
I ran SecurityCheck in the sandbox (should make no difference as the sandbox is tranparent to any program unless trying to write to kernel. The log is indeed minimal as expected.
Now I can't even trust this one it seems. I don't know what to think anymore :-(