Any idea what virus this is?

[ECA]

My mum got a mass mailer virus last week, tried 3-4 different AVs and nothings picking it up, so it's probably diabling them :/

 

[TdC]

tried 3-4 different AVs

From within whatever OS your mum's runnign? derp. Boot from a usb stick with something like this on it and see what you can find.

 

[MYstIC G]

SuperAntiSpyware has a "run as a randomly named .com file" iirc. Try that after you've done teedles suggestion.

 

[TdC]

Try that after you've done teedles suggestion.

I am not amused by your wording here Gbacon