Jel.841
Description Jel.841
This is a dangerous memory resident encrypted parasitic virus. It hooks INT 21h, and writes itself to the end of COM files that are executed. The virus deletes the anti-virus databases ANTI-VIR.DAT and CHKLIST.MS. On January 12th and August 19th, the virus erases the CMOS. The virus contains the text:
Virus JEL v2.1, Coded by Lock in
Check other viruses! Be aware! Use Antiviral Software
Tack Family
Description Tack Family
These are dangerous nonmemory resident parasitic viruses. They search for .COM files of the current directory and write themselves to the end of the file. The viruses infect the files in incorrect way: they overwrite first six bytes of the file beginning with Jmp-Virus instructions (MOV AX,offset Virus / JMP AX), but before return to the host program the viruses restore only five bytes of the code. These viruses display the message:
----------------- Hello, I am virus ! ------------
"Tack.449" contains the word "TACK".
Tadinho.971
Description Tadinho.971
It is a dangerous memory resident encrypted parasitic virus. It hooks INT 8, 21h and writes itself to the end of .COM files that are executed. Depending on the system date the virus inits its internal counter, and some time after formats the hard drive, then it tries to display the message but fails. It contains the text strings:
.com
UNICAMP
Tadinhoall Perdeu o HD... Vinganca!!!
|