From Slashdot:

Comment by Dynamoo

1. Download and install Python 2.6.1: [] 2. Download Impacket from [] (or maybe [] or some other mirror) 3. Download the scanner from [] 4. Unpack Impacket into a folder, then install Impacket from a command line with c:python26python install 5. Run the scanner with the command c:python26python [start_ip] [end_ip]

(Hat tip to an AC comment at El Reg []). Just a warning – it runs like a dog. I found that a passive Honeypot like Honeybot [atomicsoft…] works well and is easier to install.

This basically searches for the signature of the Virus via network scanning.