Pirate.1344
Description Pirate.1344
It is a dangerous memory resident parasitic virus. It hooks INT 9, 21h and writes itself to the end of .EXE files that are executed. It checks keyboard input and in some cases it erases the internal BIOS data at the addresses 0040:xxxx. This virus contains the text string:
Pirate
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MSU.271
Description MSU.271
It is a harmless nonmemory resident parasitic virus. It searches for COM files, then writes itself to the beginning of the file. It contains the text string:
MSU-Virus v1.0:The StartUp !
MSU4.2000
Description MSU4.2000
It is a dangerous memory resident polymorphic parasitic virus. It hooks INT 21h and writes itself to the beginning of COM (except COMMAND.COM) and EXE files that are executed or opened. It has the bug and halts the system while infecting EXE files. On infecting the virus creates the temporary file DOC_MOC.MOC, writes the virus into there, appends the file, and rename the DOC_MOC.MOC file to the name of that file. The virus contains the text string:
MSU 4 113 P.D. 1994
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