Function at 0x40c550
Capabilities:
Check if file exists
Create process on windows
Create process suspended
Get file attributes
Query service configuration

Disassembly:
push 0xffffffffffffffff
push 0x4b5b27
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x578
push ebx
push ebp
push esi
xor ebx, ebx
push edi
lea eax, [esp + 0x18]
push ebx
push eax
call fcn.0044dec0
mov ecx, dword [0x4dbb94]
mov dword [esp + 0x590], ebx
mov dword [esp + 0x10], ecx
mov edx, dword [esp + 0x18]
lea ecx, [esp + 0x10]
push edx
mov byte [esp + 0x594], 1
call fcn.0049d28c
push str.OServer3.exe
lea ecx, [esp + 0x14]
call fcn.0049d4b8
mov eax, dword [esp + 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
or edi, 0xffffffff
cmp eax, edi
jne 0x40c756
push 1
push ebx
push ebx
call dword [sym.imp.ADVAPI32.dll_OpenSCManagerA]
mov ebp, eax
cmp ebp, ebx
je 0x40c7c4
push 1
push str.OSERVER3
push ebp
call dword [sym.imp.ADVAPI32.dll_OpenServiceA]
mov esi, eax
cmp esi, ebx
jne 0x40c5fb
push ebp
call dword [sym.imp.ADVAPI32.dll_CloseServiceHandle]
jmp 0x40c7c4
mov ecx, 0xff
xor eax, eax
lea edi, [esp + 0x189]
mov byte [esp + 0x188], bl
rep stosd dword es:[edi], eax
lea ecx, [esp + 0x24]
lea edx, [esp + 0x188]
stosw word es:[edi], ax
push ecx
push 0x400
push edx
push esi
stosb byte es:[edi], al
mov dword [esp + 0x34], ebx
call dword [sym.imp.ADVAPI32.dll_QueryServiceConfigA]
test eax, eax
je 0x40c70c
mov eax, dword [esp + 0x194]
lea ecx, [esp + 0x10]
push eax
call fcn.0049d265
lea ecx, [esp + 0x14]
push 1
push ecx
lea ecx, [esp + 0x18]
call fcn.004965ef
mov eax, dword [eax]
push 0x4db42c
push eax
call fcn.0041fea4
add esp, 8
lea ecx, [esp + 0x14]
test eax, eax
sete byte [esp + 0x1f]
call fcn.0049d0dc
cmp byte [esp + 0x1f], bl
je 0x40c6cb
push 1
push ebx
lea ecx, [esp + 0x18]
call fcn.00496138
push 0x22
lea ecx, [esp + 0x14]
call fcn.0049d5fd
cmp eax, ebx
jl 0x40c70c
lea edx, [esp + 0x14]
push eax
push edx
lea ecx, [esp + 0x18]
call fcn.004965ef
push eax
lea ecx, [esp + 0x14]
mov byte [esp + 0x594], 2
call fcn.0049d215
mov byte [esp + 0x590], 1
lea ecx, [esp + 0x14]
jmp 0x40c707
push 0x20
lea ecx, [esp + 0x14]
call fcn.0049d5fd
cmp eax, ebx
jl 0x40c70c
push eax
lea eax, [esp + 0x18]
push eax
lea ecx, [esp + 0x18]
call fcn.004965ef
push eax
lea ecx, [esp + 0x14]
mov byte [esp + 0x594], 3
call fcn.0049d215
mov byte [esp + 0x590], 1
lea ecx, [esp + 0x14]
call fcn.0049d0dc
mov edi, dword [sym.imp.ADVAPI32.dll_CloseServiceHandle]
push esi
call edi
push ebp
call edi
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
cmp eax, 0xffffffff
jne 0x40c753
lea ecx, [esp + 0x10]
mov byte [esp + 0x590], bl
call fcn.0049d0dc
lea ecx, [esp + 0x18]
mov dword [esp + 0x590], 0xffffffff
call fcn.0043f140
xor eax, eax
jmp 0x40c9db
or edi, 0xffffffff
mov edx, dword [0x4dbb94]
mov dword [esp + 0x20], edx
mov byte [esp + 0x590], 4
call dword [sym.imp.KERNEL32.dll_GetTickCount]
push eax
lea eax, [esp + 0x24]
push str.OCULAR3__lu
push eax
call fcn.00496a65
mov ecx, dword [esp + 0x2c]
add esp, 0xc
push ecx
push 0x1000
push ebx
push 4
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_CreateFileMappingA]
cmp eax, ebx
mov dword [esp + 0x38], eax
je 0x40c7b3
push ebx
push ebx
push ebx
push 0xf001f
push eax
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov ebp, eax
cmp ebp, ebx
jne 0x40c7eb
lea ecx, [esp + 0x20]
mov byte [esp + 0x590], 1
call fcn.0049d0dc
lea ecx, [esp + 0x10]
mov byte [esp + 0x590], bl
call fcn.0049d0dc
lea ecx, [esp + 0x18]
mov dword [esp + 0x590], edi
call fcn.0043f140
xor eax, eax
jmp 0x40c9db
mov ecx, 0x400
xor eax, eax
mov edi, ebp
rep stosd dword es:[edi], eax
mov edi, str.11A988EC391A445eBDE38A038F2767D7
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov edx, ecx
mov esi, edi
mov edi, ebp
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov ecx, 0x40
lea edi, [esp + 0x85]
mov byte [esp + 0x84], bl
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
stosb byte es:[edi], al
mov eax, dword [esp + 0x20]
lea ecx, [esp + 0x84]
push eax
push str.Oserver3.exe__sn__s
push ecx
call fcn.00420780
mov ecx, 0x10
xor eax, eax
lea edi, [esp + 0x50]
mov dword [esp + 0x4c], ebx
add esp, 0xc
xor edx, edx
rep stosd dword es:[edi], eax
lea eax, [esp + 0x28]
lea ecx, [esp + 0x40]
push eax
mov eax, dword [esp + 0x14]
mov dword [esp + 0x30], edx
push ecx
push ebx
mov dword [esp + 0x3c], edx
push ebx
push 0x20
mov dword [esp + 0x48], edx
push ebx
push ebx
lea edx, [esp + 0xa0]
push ebx
push edx
push eax
mov dword [esp + 0x50], ebx
call dword [sym.imp.KERNEL32.dll_CreateProcessA]
cmp eax, ebx
mov dword [esp + 0x24], ebx
je 0x40c98e
mov ecx, dword [esp + 0x28]
push 0x493e0
push ecx
call dword [sym.imp.KERNEL32.dll_WaitForSingleObject]
mov eax, dword [esp + 0x28]
lea edx, [esp + 0x14]
push edx
push eax
mov dword [esp + 0x1c], ebx
call dword [sym.imp.KERNEL32.dll_GetExitCodeProcess]
test eax, eax
je 0x40c978
cmp dword [esp + 0x14], 0x64
jne 0x40c978
mov eax, dword [ebp]
xor ecx, ecx
mov cx, word [ebp + 0x1c]
mov dword [esp + 0x3c], eax
lea edx, [ecx + ecx + 0x22]
cmp eax, edx
jne 0x40c978
mov esi, dword [eax + ebp + 4]
lea eax, [esi + eax + 8]
cmp eax, 0x1000
ja 0x40c978
mov edx, dword [esp + 0x598]
mov ecx, dword [ebp + 4]
mov dword [esp + 0x24], 1
mov dword [edx], ecx
mov ecx, dword [esp + 0x59c]
mov eax, dword [ebp + 8]
lea edx, [ebp + 0x24]
mov dword [ecx], eax
mov ecx, dword [esp + 0x5a0]
push edx
call fcn.0043f420
mov eax, dword [esp + 0x5a4]
mov ecx, dword [ebp + 0xc]
mov edi, dword [esp + 0x5ac]
push 0xffffffffffffffff
mov dword [eax], ecx
mov edx, dword [ebp + 0x10]
mov ecx, dword [esp + 0x5ac]
mov dword [eax + 4], edx
mov eax, dword [ebp + 0x18]
push esi
mov dword [ecx], eax
mov ecx, edi
call fcn.004999e2
cmp esi, ebx
jbe 0x40c978
mov edx, dword [esp + 0x3c]
mov edi, dword [edi + 4]
mov ecx, esi
mov eax, ecx
lea esi, [edx + ebp + 8]
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov ecx, dword [esp + 0x28]
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
push ecx
call esi
mov edx, dword [esp + 0x2c]
push edx
call esi
jmp 0x40c994
mov esi, dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebp
call dword [sym.imp.KERNEL32.dll_UnmapViewOfFile]
mov eax, dword [esp + 0x38]
push eax
call esi
lea ecx, [esp + 0x20]
mov byte [esp + 0x590], 1
call fcn.0049d0dc
lea ecx, [esp + 0x10]
mov byte [esp + 0x590], bl
call fcn.0049d0dc
lea ecx, [esp + 0x18]
mov dword [esp + 0x590], 0xffffffff
call fcn.0043f140
mov eax, dword [esp + 0x24]
mov ecx, dword [esp + 0x588]
pop edi
pop esi
pop ebp
pop ebx
mov dword fs:[0], ecx
add esp, 0x584
ret