Type File virus
Date Discovered 1992.09
Place of Origin Prague, Czechoslovakia
Source Language
Platform DOS
File Type(s) .com, .exe
Infection Length 1,919 bytes

Pojer is a memory resident virus from Prague in the former Czechoslovakia, appearing in the year 1992. It does little more than replicate.


When a file infected with Pojer is executed, it becomes resident at the top of system memory, below the DOS boundary. While taking up 1,919 bytes of disk space, it takes up 2,160 bytes in memory. It appends itself to .com and .exe files as they are executed. The time and date will not be altered in the directory listing.


Pojer has four variants, which are nearly identical to the original. These are Pojer.1935, 1941, 1949 and 4028. Pojer.1941 and 1949 are both from Poland, unlike the original and 1935 which are from Czechoslovakia/Czech Republic (these two were created before and after Czech-Slovak split). Little information is available about Pojer.4028.


Patricia Hoffman. Online VSUM, Pojer Virus.

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