OhOh.799
Description OhOh.799
It is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. The virus does not work with system memory blocks correctly and may halt the system. It uses anti-debugging tricks and contains the text strings:
I LOVE YOU !
Oh Oh ! I AM VIRUS!
Check other viruses! Be aware! Use Antiviral Software
Hero.394
Description Hero.394
These are not dangerous memory resident parasitic viruses. They copy themselves to the Interrupt Vectors Table at the address 0000:0200, hook INT 21h, and write themselves to the end of the files that are executed.
"Hero.394" infects only EXE files, "Hero.506" infects both EXE and COM files. As a read/write buffer these viruses use video memory.
While setting Interrupt Vector (INT 21h, AH=25h) with a number greater than 7Fh, "Hero.506" disinfects itself in the memory.
On the 1st of any month these viruses decrypts and display the following messages in Russian: "GLORY TO HEROES!" or "The author of the virus is a cretin" depending on the version of the virus.
Hex
Description Hex
It's a harmless memory resident boot virus. It hooks INT 13h and writes itself into MBR of hard drive and boot sector of floppy disks. It contains the internal text strings:
CocaColato jest to!
Wirus HEX dedykowany E.D. i M.Sellowi
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