Appender Edit History Talk0 223pages on this wiki Category page This category is for viruses that add their code to the end of the file. “Ply is a rare example of a non-encrypted polymorphic virus. It is the first of its kind, and... Ply “Invol, also known as Involuntary was the first virus to infect .sys files on DOS. Files with a... Invol “Natas is a polymorphic, stealth, multipartite virus. It was created by Little Loc also known as... Natas Magistr “Cysta also known as Comsysexe is a Polish virus from 1993. When Cysta is executed, it installs... Cysta “Chill also known as Chill Touch is a DOS virus from 1994. It was found "pre-installed" on a... Chill “Kaos4 is a direct-action file infecting virus that gained some prominence in the mid 1990's. It... Kaos4 Pages in category "Appender" The following 7 pages are in this category, out of 7 total. C Chill CystaI Invol K Kaos4M MagistrN Natas P Ply Categories: Add category Cancel Save