ATB.1522.a
Description ATB.1522.a
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. Depending on its counter the virus displays the message:
Welcom jion in A block troop of Computer
This virus made by ATB(1991/4)
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Muhamor.4608
Description Muhamor.4608
It is a dangerous memory resident polymorphic double-encrypted parasitic virus. It hooks INT 12h, 21h and writes itself to the beginning of COM and to the middle of EXE files that are executed or opened. The virus has bugs and may corrupt EXE files while infecting them. The virus does not infect files with names: *WE?.*, *AN?.*, *38?.*.
Depending on its internal random counter the virus patches the standard Windows95 logos "Please wait while your computer shuts down" and "It's now safe to turn off your computer" - it writes to the top of these logos an image of fly-agaric mushroom ("muhomor" in Russian).
The virus contains the text strings:
.E.C.e.cXEOMxeom
weANanaNAnWE38
Muhamor virus ver 1.1
Version 1.1
C:WINDOWSLOGOS.sys
C:WINDOWSLOGOW.sys
Mul.443
Description Mul.443
It is a harmless memory resident multipartite virus. When an infected file is executed, the virus writes itself to the MBR of the hard drive. While loading from infected disk the virus hooks INT 1Ch, waits for DOS loading, hooks INT 21h and then writes itself to the end of COM and EXE files that are executed. The virus does not manifest itself in any way.
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