AJ family
Description AJ family
These are harmless memory resident parasitic viruses. They hook INT 21h, and write themselves to the end of EXE files that are executed. The header of infected files contains the word:
AJ
"AJ.793" is a very dangerous virus. In February, starting from the 6th, it formats hard drive sectors. It also corrupts the anti-virus databases of ANTI-VIR.DAT and CHKLIST.MS.
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BDay.512
Description BDay.512
It is a very dangerous nonmemory resident encrypted parasitic virus. It searches for .COM-, then writes itself to the beginning of the file. While infecting the virus uses FCB-calls. Depending on the system date and time the virus erases the files. The virus contains the internal text strings:
Happy Birthday!!
????????COM
Beaches.1091
Description Beaches.1091
Beaches.1091 is a dangerous not memory resident parasitic polymorphic virus. It searches for .EXE-files and writes itself at their ends. After infection it disinfects host file. Depending on its generation it overwrites the files with the program which displays while execution:
sandy beaches
bridges sinking into the sea
beautiful confusion
you're a fading memory
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