Chemist.265
Description Chemist.265
It's harmless memory resident parasitic virus. It copies itself into Interrupt Vectors Table, hooks INT 21h and on DOS calls SetDir, SetDist, GetDiskSize it searches for .COM-files and writes itself at their ends. It contains the internal text strings:
*.com
Chemù7t
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Beethoven
Description Beethoven
It's a dangerous memory resident parasitic encrypted virus. It hooks INT 1Ch, 21h and writes itself at the end of COM- and EXE-files that are executed or opened. Depending on the internal counter and system timer this virus overwrites the MBR of hard drive and files by trojan program which on execution displays the message and plays the music:
Beethoven is hereall. And now, enjoy the music...
Before.2915
Description Before.2915
It is not a dangerous memory resident parasitic virus. The virus was written in Assembler and its actual code is 1164 bytes, but after that virus author compressed it with AIN executable files compressor, and result virus code (compressed actual virus code and decompression routine) grows up to 2915 bytes.
The virus hooks INT 21h and writes itself to the beginning of COM and EXE files that are executed. The virus does not infect the files: CO*, WI*, EM*, SH*, GD* (COMMAND, WIN, EMM386, all). Depending on the system time and video mode the virus disables executing files (does not allow to start games?). The virus contains the text strings:
COWIEMSHGD
BEFORE.CE.1136 (C) PC Soft Club
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