Penwes Malware altering Dns - No internet connection

2 days ago, I found this malware into PC of my friend. This malware isn't dangerous, but it's annoying. The malware changes automatically the Dns of network in:
PREFERRED DNS SERVER: 127.0.0.1 (localhost) and ALTERNATE DNS SERVER: random.
So, the internet connection is down.

"How I took it?"

You took it, when you installed any software from un-official  website.
Probably you clicked "next" during installation without to read the notes.

"Ok, but now how I remove it?"

You can follow this step:

Go to Control panel-->Uninstall a program-->PenWes-->Uninstall.
Then, go to Start-->Accessoris-->click right on Prompt and Run as Administrator.
In this window write ipconfig /flushdns and push Enter.

Now, reboot pc.
If the problem continue, reboot pc in Safe mode with networking. ( F8 at reboot)
Download Combofix and run it.
When it has finished, reboot pc.
The Malware was removed from the PC.

Bye ;)