The worm which appeared in 2003 August,spread viathe P2Pnetworkof fileexchangesoftware "Winny".

We have becomethe feasibility type which was developed with Visual C++,file namehas becomethe name which makes the contents think whichhave circulatedwith Winny network. When it executes, "the compressed (Zip type) folder errorcompressed (Zip type)folder is invalid, or or it has been broken. "With it indicates the dialogue of the fake which is said, is infected.

When you are infected,content "of the Cache"folder of Winny is deleted entirely. And, it copies itself with the name which is chosen suitably from the file name which is placedon"the Down" folderof name orWinny which from midst of the list which is built in are chosen torandom.Antinny which was copiedbeing compressedwith LZHtype, is placed on "the Up" folder, waits for the fact thatit is downloadedin someone. ... The continuation is read

In addition,alteringregistry, in order for by yourself to be standing, ? which ] it sets,in the Win.ini file "[ it paints the ? which is painted =C:Messageof the puzzle, ¥ Winny "is left. Also "the ? worm which is painted" is called from this message