Guys.
This thread is the only help I’ve had to get rid of this virus… Thanks guys.

My avast scanner kept picking up smtpdrv.sys as having a trojan , and it kept coming back.

Did various things, but the bit that worked was Combofix.

It found 2 files a c:\windows\system32\3_Exception.nls and a C:\windows\system32\drivers\Cin06.sys

drivers/services it changed
-------\LEGACY_CIN06
-------\Cin06
-------\nm
-------\runtime
-------\smtpdrv

These have been quarantined by Combofix now but as these files are different and Avast didnt appear to recognise these as viruses, do you want the files?

The only problem I had after the combofix worked, was that the GUI for Avast died, although the scanners worked!

I have now re-installed avast.