Antinny
Antinny is computer virus first detected in 2003. There are several computer worms called "Antinny" have been spreading though the P2P network of the Japanese software Winny P2P.
Some versions of Antinny work as follows. When infected, a fake error message is first displayed when run. Then it drops the following legitimate dlls for archiving unlha32.dll, zip32.dll, and zip32j.dll. Then it attempts to copy itself using attractive filenames to the upload directory of Winny for other users to download.
Some of the damages cause by this computer worm includes data leak of All Nippon Airlines where passwords for security-access areas in 29 airports across Japan were being leaked over the program and computer data leak of the Okayama Prefectural Police Force, where leaked data includes around 1,500 investigations including sensitive data.