Oksana.1735
Description Oksana.1735
This is a very dangerous nonmemory resident parasitic encrypted virus. The virus searches for COM files then writes itself to the end of the file. The virus do not infects the COMMAND.COM file, but the string comparing utility has a bug, and the virus do not infect C*.COM files. If the virus detects a file that has COM extension and EXE internal format, the virus overwrites that file with a program that displays the message in Russian. Some viruses of that family disinfect the host file before return.
On October 21 the viruses display the message:
HAPPY BIRTHDAY OKSANA
Depending on the generation or counters the virus reads into the system memory and then erases the FAT of the C: drive and displays the message in Russian. Then the virus wait for 3:00am and restores the FAT.
Check other viruses! Be aware! Use Antiviral Software
Silicon.1019
Description Silicon.1019
It is a dangerous memory resident encrypted parasitic virus. It copies itself into EMS memory, hooks INT 21h and writes itself to the end of EXE files that are executed. The virus displays the messages:
Silicon Avenger !!!!
Out of Memory!
contains the text string:
Silicon Avenger (c) Sx 1995
and deletes the files:
Anti-Vir.Dat chklist.ms chklist.cps
SillyWilly.2256
Description SillyWilly.2256
It is a very dangerous nonmemory resident parasitic polymorphic virus. It searches for .COM files of the current directory and writes itself to the end of the file. The code that passes the control to virus body consists of two parts: the first part (the file beginning) jumps to the second one, and the second jumps to the main virus body. The opcodes of these parts may be different.
Sometimes it also searches for .EXE files and overwrites them with a trojan program that erases the disk sectors and display the messages:
__ __
³ o o ³
³ ³
³ (..) ³
³ ) ---- ( ³
\__________/
The User of This Computer Is Stupid!
Hello, I'm Silly Willy! -
Now I'm formating Your HARDDISK!
That's fine! - Isn't it? (har,har)
Formating Drive C: all$ERROR: No SYSTEM found!
No files on drive C:
Insert SYSTEM diskette in drive A: and push any key!
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