Madoka.exe

❌ madoka.exe, mostly known as the Ghost virus or the Sadako virus in Japan, was a Japanese joke program, which is a variant of the Win32/FlaGhost Malware.

When the user runs the program, a picture of a Japanese woman in full-screen is displayed briefly, before disappearing. Some Chinese text is then displayed in the upper-left corner of the screen. However, a ghost version of the woman image will appear along with a scream sound effect. When the screamer ends, the virus immediately returns to the woman picture. The picture will appear suddenly.

Link
NOTE : The following application contains a screamer!
 * web.archive.org/web/20041106190224/geocities.co.jp/SiliconValley-Oakland/8358/mysoft/files/madoka08.zip