U.524
Description U.524
It's a dangerous memory resident parasitic virus. It hooks INT 1Ch, 21h and writes itself to the end of .COM-files that are executed. The infected files contain the character 'U' at the fourth byte from the beginning. This byte is the identification byte of this virus. This virus checks the current date and time by using CMOS memory and from May, 7th on 1:57pm it reboots computer.
Check other viruses! Be aware! Use Antiviral Software
Horse.1154.a
Description Horse.1154.a
There are not dangerous memory resident parasitic viruses. They hook INT 8, 21h and write themselves to the end of COM and EXE files that are executed or closed. While infecting the viruses use the undocumented System File Table. The viruses trace interrupts, periodically manifest themselves by a sound or the video-effects. They contain the text strings like:
Sofia,Jan/Feb 1991 (c) Naughty Hacker.
Sofia,Feb '91 Naughty Hacker.
HS.1221
Description HS.1221
This is a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files (except AIDSTEST.EXE) that are executed. On December, 27th it hooks INT 17h and prints the messages in Russian.
The virus contains the text string:
COMSPEC=
SNAIDSTESTCOMEXE
HS86.42 Ver 4.09.Copyright by EA computers inc.1994
|