Function at 0x42fe50
Capabilities:
Check os version
Create thread
Resume thread
Set environment variable
Suspend thread

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4d8ab6
mov eax, dword fs:[0]
push eax
sub esp, 0x148
mov eax, dword [0x4fbf40]
xor eax, ebp
mov dword [ebp - 0x10], eax
push esi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
push 0x250
call fcn.00496bdd
add esp, 4
mov dword [ebp - 0x128], eax
mov dword [ebp - 4], 0
cmp dword [ebp - 0x128], 0
je 0x42feb6
push 3
push 0
mov ecx, dword [ebp - 0x128]
call fcn.0046dcd0
mov dword [ebp - 0x148], eax
jmp 0x42fec0
mov dword [ebp - 0x148], 0
mov eax, dword [ebp - 0x148]
mov dword [ebp - 0x124], eax
mov dword [ebp - 4], 0xffffffff
mov ecx, dword [ebp - 0x124]
mov dword [0x515de8], ecx
push 0x4fe8e8
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov dword [ebp - 0x40], eax
push 0x4fe8c8
mov edx, dword [ebp - 0x40]
push edx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x38], eax
cmp dword [ebp - 0x38], 0
je 0x42ff0f
push 1
push 0x100
call dword [ebp - 0x38]
mov dword [ebp - 0xfc], 0x94
lea eax, [ebp - 0xfc]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExA]
cmp dword [ebp - 0xec], 2
jne 0x42ff38
mov byte [0x515df1], 1
jmp 0x42ff54
cmp dword [ebp - 0xf8], 4
jne 0x42ff4f
cmp dword [ebp - 0xf4], 0x5a
jb 0x42ff4f
call fcn.00430ac0
call fcn.00430ba0
movzx ecx, byte [0x515df1]
test ecx, ecx
jne 0x42ff65
cli
not esp
not esp
sti
mov edx, dword [0x515e3c]
mov eax, dword [0x515e3c]
mov ecx, dword [edx + 0x48]
xor ecx, dword [eax + 0x6c]
mov edx, dword [0x515e3c]
xor ecx, dword [edx + 0x64]
and ecx, 4
je 0x42ff8b
mov byte [0x515ded], 1
mov eax, dword [0x515e3c]
mov ecx, dword [0x515e3c]
mov edx, dword [eax + 0x48]
xor edx, dword [ecx + 0x6c]
mov eax, dword [0x515e3c]
xor edx, dword [eax + 0x64]
and edx, 0x200
je 0x42ffb3
mov byte [0x515def], 1
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov ecx, dword [0x515e3c]
mov edx, dword [0x515e3c]
mov ecx, dword [ecx + 0x70]
xor ecx, dword [edx + 0x6c]
mov edx, dword [0x515e3c]
xor ecx, dword [edx + 0x2c]
add eax, ecx
mov dword [0x515dfc], eax
mov eax, dword [0x515e3c]
mov ecx, dword [0x515e3c]
mov edx, dword [eax + 0x7c]
xor edx, dword [ecx + 0x40]
mov eax, dword [0x515e3c]
xor edx, dword [eax + 0x64]
add edx, 0xfff
shr edx, 0xc
mov dword [0x515e10], edx
mov dword [ebp - 0x5c], 0
mov dword [ebp - 0x30], 0xffffffff
push 0
call fcn.00434f40
add esp, 4
mov esi, eax
call dword [sym.imp.KERNEL32.dll_GetTickCount]
xor esi, eax
mov ecx, dword [0x515e3c]
xor esi, dword [ecx + 0x2c]
push esi
lea ecx, [ebp - 0x118]
call fcn.0042d340
lea ecx, [ebp - 0x118]
call fcn.0042d7c0
mov dword [ebp - 0x5c], eax
mov dword [ebp - 0x114], 0xc
mov dword [ebp - 0x110], 0
mov dword [ebp - 0x10c], 1
push 0
push 0x1000
push 0
push 4
lea edx, [ebp - 0x114]
push edx
push 0xffffffffffffffff
call dword [sym.imp.KERNEL32.dll_CreateFileMappingA]
mov dword [ebp - 0x30], eax
cmp dword [ebp - 0x30], 0
jne 0x430092
xor al, al
jmp 0x4305fa
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
mov dword [ebp - 0x104], eax
mov dword [ebp - 0x108], 0
push 2
push 1
push 0
lea eax, [ebp - 0x108]
push eax
mov ecx, dword [ebp - 0x104]
push ecx
mov edx, dword [ebp - 0x104]
push edx
mov eax, dword [ebp - 0x104]
push eax
call dword [sym.imp.KERNEL32.dll_DuplicateHandle]
push 0x1000
push 0
push 0
push 2
mov ecx, dword [ebp - 0x30]
push ecx
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [0x515e0c], eax
movzx edx, byte [0x515e8c]
test edx, edx
je 0x430108
lea ecx, [ebp - 0x118]
call fcn.0042d7c0
mov dword [ebp - 0x14c], eax
jmp 0x430111
mov eax, dword [ebp - 0x5c]
mov dword [ebp - 0x14c], eax
mov ecx, dword [0x515e3c]
mov edx, dword [ebp - 0x14c]
xor edx, dword [ecx + 0x40]
mov eax, dword [0x515e3c]
xor edx, dword [eax + 0x54]
mov ecx, dword [0x515e3c]
xor edx, dword [ecx + 0x68]
mov eax, dword [0x515e3c]
xor edx, dword [eax + 4]
mov ecx, dword [0x515e3c]
xor edx, dword [ecx + 0x78]
mov eax, dword [0x515e0c]
mov dword [eax], edx
mov ecx, dword [0x515e0c]
mov edx, dword [ebp - 0x108]
mov dword [ecx + 4], edx
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
mov ecx, dword [0x515e0c]
mov dword [ecx + 8], eax
mov edx, dword [0x515e0c]
mov dword [edx + 0x20], 0
mov eax, dword [0x515e0c]
add eax, 0xe00
mov dword [0x515e2c], eax
mov ecx, dword [0x515e2c]
mov byte [ecx], 0
mov edx, dword [ebp - 0x30]
mov dword [ebp - 0x12c], edx
lea eax, [ebp - 0x12c]
push eax
lea ecx, [ebp - 0x2c]
push ecx
call fcn.00432410
add esp, 8
mov dword [ebp - 0x150], eax
mov edx, dword [ebp - 0x150]
mov dword [ebp - 0x154], edx
mov dword [ebp - 4], 1
mov ecx, dword [ebp - 0x154]
call fcn.0043db50
push eax
push 0x4fe8c4
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
mov dword [ebp - 4], 0xffffffff
lea ecx, [ebp - 0x2c]
call fcn.0043da10
xor ecx, ecx
mov eax, dword [0x515e10]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x130], eax
mov eax, dword [ebp - 0x130]
mov dword [0x515e18], eax
mov eax, dword [0x515e10]
shl eax, 4
xor ecx, ecx
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x134], eax
mov eax, dword [ebp - 0x134]
mov dword [0x515df8], eax
xor ecx, ecx
mov eax, dword [0x515e10]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x138], eax
mov eax, dword [ebp - 0x138]
mov dword [0x515e1c], eax
xor ecx, ecx
mov eax, dword [0x515e10]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x13c], eax
mov eax, dword [ebp - 0x13c]
mov dword [0x515e20], eax
push 0x1000
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x140], eax
mov ecx, dword [ebp - 0x140]
mov dword [0x515e24], ecx
xor ecx, ecx
mov eax, dword [0x515e10]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004899a6
add esp, 4
mov dword [ebp - 0x144], eax
mov eax, dword [ebp - 0x144]
mov dword [0x515df4], eax
mov ecx, dword [0x515e3c]
mov edx, dword [ecx + 0x54]
xor edx, dword [ebp - 0x5c]
push edx
lea ecx, [ebp - 0x4c]
call fcn.0042d340
mov dword [ebp - 0x11c], 0
jmp 0x430324
mov eax, dword [ebp - 0x11c]
add eax, 1
mov dword [ebp - 0x11c], eax
mov ecx, dword [0x515e10]
shl ecx, 4
cmp dword [ebp - 0x11c], ecx
jge 0x43037b
lea ecx, [ebp - 0x4c]
call fcn.0042d7c0
mov edx, dword [0x515e3c]
xor eax, dword [edx + 0x40]
mov ecx, dword [0x515e3c]
xor eax, dword [ecx + 0x54]
mov edx, dword [0x515e3c]
xor eax, dword [edx + 0x68]
mov ecx, dword [0x515e3c]
xor eax, dword [ecx + 4]
mov edx, dword [0x515e3c]
xor eax, dword [edx + 0x78]
mov ecx, dword [ebp - 0x11c]
mov edx, dword [0x515df8]
mov dword [edx + ecx*4], eax
jmp 0x430315
mov dword [ebp - 0x120], 0
jmp 0x430396
mov eax, dword [ebp - 0x120]
add eax, 1
mov dword [ebp - 0x120], eax
mov ecx, dword [ebp - 0x120]
cmp ecx, dword [0x515e10]
jge 0x4303f0
mov edx, dword [ebp - 0x120]
mov eax, dword [0x515e18]
mov dword [eax + edx*4], 0xffffffff
mov ecx, dword [ebp - 0x120]
mov edx, dword [0x515e1c]
mov dword [edx + ecx*4], 0
mov eax, dword [ebp - 0x120]
mov ecx, dword [0x515e20]
mov dword [ecx + eax*4], 0xffffffff
mov edx, dword [ebp - 0x120]
mov eax, dword [0x515df4]
mov dword [eax + edx*4], 0
jmp 0x430387
mov ecx, dword [0x515e10]
sar ecx, 1
add ecx, 1
mov dword [0x4fa9c0], ecx
movzx edx, byte [0x515dee]
test edx, edx
jne 0x430421
cmp dword [0x4fa9c0], 6
jae 0x43041f
mov dword [0x4fa9c0], 6
jmp 0x430434
cmp dword [0x4fa9c0], 0x12
jae 0x430434
mov dword [0x4fa9c0], 0x12
push 0x4fe8b8
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov dword [ebp - 0x60], eax
push 0x4fe8a4
mov eax, dword [ebp - 0x60]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x48], eax
push 0x4fe890
mov ecx, dword [ebp - 0x60]
push ecx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x50], eax
mov edx, dword [0x515e3c]
mov eax, dword [0x515e3c]
mov ecx, dword [edx + 0x38]
xor ecx, dword [eax + 0x6c]
mov edx, dword [0x515e3c]
xor ecx, dword [edx + 0x64]
and ecx, 2
je 0x43048a
call fcn.0046bf00
movzx eax, byte [ebp + 8]
push eax
call fcn.004307a0
add esp, 4
movzx ecx, al
test ecx, ecx
jne 0x4304a5
xor al, al
jmp 0x4305fa
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov dword [ebp - 0x100], eax
mov edx, dword [ebp - 0x100]
mov eax, dword [ebp - 0x100]
add eax, dword [edx + 0x3c]
mov dword [ebp - 0x58], eax
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov ecx, dword [ebp - 0x58]
add eax, dword [ecx + 0x28]
mov dword [ebp - 0x34], eax
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edx, dword [ebp - 0x58]
sub eax, dword [edx + 0x34]
mov dword [ebp - 0x44], eax
mov eax, dword [ebp - 0x34]
push eax
push 1
mov ecx, dword [0x4fa9b8]
push ecx
call fcn.00430620
add esp, 0xc
mov edx, dword [ebp - 0x34]
push edx
mov eax, dword [0x4fa9b8]
push eax
call fcn.00430700
add esp, 8
mov ecx, dword [0x4fa9b8]
mov edx, dword [ecx + 4]
push edx
call dword [sym.imp.KERNEL32.dll_ResumeThread]
mov eax, dword [0x4fa9b8]
mov ecx, dword [eax + 8]
push ecx
call dword [sym.imp.KERNEL32.dll_DebugActiveProcess]
mov dword [ebp - 0x54], eax
mov edx, dword [0x4fa9b8]
mov eax, dword [edx + 4]
push eax
call dword [sym.imp.KERNEL32.dll_SuspendThread]
mov ecx, dword [ebp - 0x34]
push ecx
push 0
mov edx, dword [0x4fa9b8]
push edx
call fcn.00430620
add esp, 0xc
mov eax, dword [0x4fa9b8]
mov ecx, dword [eax + 4]
push ecx
mov edx, dword [0x4fa9b8]
mov eax, dword [edx + 0xc]
push eax
call fcn.0042fba0
add esp, 8
mov dword [ebp - 0x3c], 0
lea ecx, [ebp - 0x3c]
push ecx
push 0
mov edx, dword [0x4fa9b8]
mov eax, dword [edx]
push eax
push 0x42cf20
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
movzx ecx, byte [ebp + 8]
test ecx, ecx
je 0x4305aa
call dword [sym.imp.KERNEL32.dll_FreeConsole]
push 0x515dbc
call dword [sym.imp.KERNEL32.dll_InitializeCriticalSection]
lea edx, [ebp - 0x4c]
push edx
mov eax, dword [ebp - 0x44]
push eax
call fcn.0042d9a0
add esp, 8
movzx ecx, al
test ecx, ecx
jne 0x4305d0
xor al, al
jmp 0x4305fa
mov edx, dword [0x515e0c]
push edx
call dword [sym.imp.KERNEL32.dll_UnmapViewOfFile]
mov dword [0x515e0c], 0
mov eax, dword [ebp - 0x30]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [ebp - 0x30], 0xffffffff
mov al, 1
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop esi
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.004970da
mov esp, ebp
pop ebp
ret