Function at 0x54f580
Capabilities:
Check os version
Create thread
Resume thread
Set environment variable
Suspend thread

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x5db72b
mov eax, dword fs:[0]
push eax
sub esp, 0x138
mov eax, dword [0x6068d0]
xor eax, ebp
mov dword [ebp - 0x44], eax
push esi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
push 3
push 0
call fcn.0059dac0
add esp, 8
push 0x60894c
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov dword [ebp - 0x20], eax
push 0x60892c
mov eax, dword [ebp - 0x20]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x18], eax
cmp dword [ebp - 0x18], 0
je 0x54f5e8
push 1
push 0x100
call dword [ebp - 0x18]
mov dword [ebp - 0xdc], 0x94
lea ecx, [ebp - 0xdc]
push ecx
call dword [sym.imp.KERNEL32.dll_GetVersionExA]
cmp dword [ebp - 0xcc], 2
jne 0x54f611
mov byte [0x61c5ed], 1
jmp 0x54f62d
cmp dword [ebp - 0xd8], 4
jne 0x54f628
cmp dword [ebp - 0xd4], 0x5a
jb 0x54f628
call fcn.00550180
call fcn.00550260
movzx edx, byte [0x61c5ed]
test edx, edx
jne 0x54f63e
cli
not esp
not esp
sti
mov eax, dword [0x61c634]
mov ecx, dword [0x61c634]
mov edx, dword [eax + 0x84]
xor edx, dword [ecx + 0x5c]
mov eax, dword [0x61c634]
xor edx, dword [eax + 0x58]
and edx, 4
je 0x54f666
mov byte [0x61c5e9], 1
mov ecx, dword [0x61c634]
mov edx, dword [0x61c634]
mov eax, dword [ecx + 0x84]
xor eax, dword [edx + 0x5c]
mov ecx, dword [0x61c634]
xor eax, dword [ecx + 0x58]
and eax, 0x200
je 0x54f692
mov byte [0x61c5eb], 1
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edx, dword [0x61c634]
mov ecx, dword [0x61c634]
mov edx, dword [edx + 0x50]
xor edx, dword [ecx + 0x5c]
mov ecx, dword [0x61c634]
xor edx, dword [ecx + 0x90]
add eax, edx
mov dword [0x61c5f8], eax
mov edx, dword [0x61c634]
mov eax, dword [0x61c634]
mov ecx, dword [edx + 0x2c]
xor ecx, dword [eax + 0x80]
mov edx, dword [0x61c634]
xor ecx, dword [edx + 0x58]
add ecx, 0xfff
shr ecx, 0xc
mov dword [0x61c60c], ecx
mov dword [ebp - 0x3c], 0
mov dword [ebp - 0x10], 0xffffffff
push 0
call fcn.005508d0
add esp, 4
mov esi, eax
call dword [sym.imp.KERNEL32.dll_GetTickCount]
xor esi, eax
mov eax, dword [0x61c634]
xor esi, dword [eax + 0x90]
push esi
lea ecx, [ebp - 0xf8]
call fcn.0054c960
lea ecx, [ebp - 0xf8]
call fcn.0054cde0
mov dword [ebp - 0x3c], eax
mov dword [ebp - 0xf4], 0xc
mov dword [ebp - 0xf0], 0
mov dword [ebp - 0xec], 1
push 0
push 0x1000
push 0
push 4
lea ecx, [ebp - 0xf4]
push ecx
push 0xffffffffffffffff
call dword [sym.imp.KERNEL32.dll_CreateFileMappingA]
mov dword [ebp - 0x10], eax
cmp dword [ebp - 0x10], 0
jne 0x54f77a
xor al, al
jmp 0x54fcd1
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
mov dword [ebp - 0xe4], eax
mov dword [ebp - 0xe8], 0
push 2
push 1
push 0
lea edx, [ebp - 0xe8]
push edx
mov eax, dword [ebp - 0xe4]
push eax
mov ecx, dword [ebp - 0xe4]
push ecx
mov edx, dword [ebp - 0xe4]
push edx
call dword [sym.imp.KERNEL32.dll_DuplicateHandle]
push 0x1000
push 0
push 0
push 2
mov eax, dword [ebp - 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [0x61c608], eax
movzx ecx, byte [0x61c674]
test ecx, ecx
je 0x54f7f0
lea ecx, [ebp - 0xf8]
call fcn.0054cde0
mov dword [ebp - 0x13c], eax
jmp 0x54f7f9
mov edx, dword [ebp - 0x3c]
mov dword [ebp - 0x13c], edx
mov eax, dword [0x61c634]
mov ecx, dword [ebp - 0x13c]
xor ecx, dword [eax + 0x80]
mov edx, dword [0x61c634]
xor ecx, dword [edx + 0x60]
mov eax, dword [0x61c634]
xor ecx, dword [eax]
mov edx, dword [0x61c634]
xor ecx, dword [edx + 0x74]
mov eax, dword [0x61c634]
xor ecx, dword [eax + 0x78]
mov edx, dword [0x61c608]
mov dword [edx], ecx
mov eax, dword [0x61c608]
mov ecx, dword [ebp - 0xe8]
mov dword [eax + 4], ecx
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
mov edx, dword [0x61c608]
mov dword [edx + 8], eax
mov eax, dword [0x61c608]
mov dword [eax + 0x20], 0
mov ecx, dword [ebp - 0x10]
mov dword [ebp - 0x104], ecx
lea edx, [ebp - 0x104]
push edx
lea eax, [ebp - 0x120]
push eax
call fcn.00551a30
add esp, 8
mov dword [ebp - 0x140], eax
mov ecx, dword [ebp - 0x140]
mov dword [ebp - 0x144], ecx
mov dword [ebp - 4], 0
mov ecx, dword [ebp - 0x144]
call fcn.00548d90
push eax
push 0x608928
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
mov dword [ebp - 4], 0xffffffff
lea ecx, [ebp - 0x120]
call fcn.00548d50
xor ecx, ecx
mov eax, dword [0x61c60c]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x124], eax
mov eax, dword [ebp - 0x124]
mov dword [0x61c614], eax
mov eax, dword [0x61c60c]
shl eax, 4
xor ecx, ecx
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x128], eax
mov eax, dword [ebp - 0x128]
mov dword [0x61c5f4], eax
xor ecx, ecx
mov eax, dword [0x61c60c]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x12c], eax
mov eax, dword [ebp - 0x12c]
mov dword [0x61c618], eax
xor ecx, ecx
mov eax, dword [0x61c60c]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x130], eax
mov eax, dword [ebp - 0x130]
mov dword [0x61c61c], eax
push 0x1000
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x134], eax
mov ecx, dword [ebp - 0x134]
mov dword [0x61c620], ecx
xor ecx, ecx
mov eax, dword [0x61c60c]
mov edx, 4
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.005a7853
add esp, 4
mov dword [ebp - 0x138], eax
mov eax, dword [ebp - 0x138]
mov dword [0x61c5f0], eax
mov ecx, dword [0x61c634]
mov edx, dword [ecx + 0x60]
xor edx, dword [ebp - 0x3c]
push edx
lea ecx, [ebp - 0x2c]
call fcn.0054c960
mov dword [ebp - 0xfc], 0
jmp 0x54f9fa
mov eax, dword [ebp - 0xfc]
add eax, 1
mov dword [ebp - 0xfc], eax
mov ecx, dword [0x61c60c]
shl ecx, 4
cmp dword [ebp - 0xfc], ecx
jge 0x54fa53
lea ecx, [ebp - 0x2c]
call fcn.0054cde0
mov edx, dword [0x61c634]
xor eax, dword [edx + 0x80]
mov ecx, dword [0x61c634]
xor eax, dword [ecx + 0x60]
mov edx, dword [0x61c634]
xor eax, dword [edx]
mov ecx, dword [0x61c634]
xor eax, dword [ecx + 0x74]
mov edx, dword [0x61c634]
xor eax, dword [edx + 0x78]
mov ecx, dword [ebp - 0xfc]
mov edx, dword [0x61c5f4]
mov dword [edx + ecx*4], eax
jmp 0x54f9eb
mov dword [ebp - 0x100], 0
jmp 0x54fa6e
mov eax, dword [ebp - 0x100]
add eax, 1
mov dword [ebp - 0x100], eax
mov ecx, dword [ebp - 0x100]
cmp ecx, dword [0x61c60c]
jge 0x54fac8
mov edx, dword [ebp - 0x100]
mov eax, dword [0x61c614]
mov dword [eax + edx*4], 0xffffffff
mov ecx, dword [ebp - 0x100]
mov edx, dword [0x61c618]
mov dword [edx + ecx*4], 0
mov eax, dword [ebp - 0x100]
mov ecx, dword [0x61c61c]
mov dword [ecx + eax*4], 0xffffffff
mov edx, dword [ebp - 0x100]
mov eax, dword [0x61c5f0]
mov dword [eax + edx*4], 0
jmp 0x54fa5f
mov ecx, dword [0x61c60c]
sar ecx, 1
add ecx, 1
mov dword [0x604b58], ecx
movzx edx, byte [0x61c5ea]
test edx, edx
jne 0x54faf9
cmp dword [0x604b58], 6
jae 0x54faf7
mov dword [0x604b58], 6
jmp 0x54fb0c
cmp dword [0x604b58], 0x12
jae 0x54fb0c
mov dword [0x604b58], 0x12
push 0x60891c
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov dword [ebp - 0x40], eax
push 0x608908
mov eax, dword [ebp - 0x40]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x28], eax
push 0x6088f4
mov ecx, dword [ebp - 0x40]
push ecx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x30], eax
mov edx, dword [0x61c634]
mov eax, dword [0x61c634]
mov ecx, dword [edx + 0x7c]
xor ecx, dword [eax + 0x5c]
mov edx, dword [0x61c634]
xor ecx, dword [edx + 0x58]
and ecx, 2
je 0x54fb62
call fcn.005832b0
mov al, byte [ebp + 8]
push eax
call fcn.0054fe70
add esp, 4
movzx ecx, al
test ecx, ecx
jne 0x54fb7c
xor al, al
jmp 0x54fcd1
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov dword [ebp - 0xe0], eax
mov edx, dword [ebp - 0xe0]
mov eax, dword [ebp - 0xe0]
add eax, dword [edx + 0x3c]
mov dword [ebp - 0x38], eax
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov ecx, dword [ebp - 0x38]
add eax, dword [ecx + 0x28]
mov dword [ebp - 0x14], eax
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edx, dword [ebp - 0x38]
sub eax, dword [edx + 0x34]
mov dword [ebp - 0x24], eax
mov eax, dword [ebp - 0x14]
push eax
push 1
mov ecx, dword [0x604b50]
push ecx
call fcn.0054fcf0
add esp, 0xc
mov edx, dword [ebp - 0x14]
push edx
mov eax, dword [0x604b50]
push eax
call fcn.0054fdd0
add esp, 8
mov ecx, dword [0x604b50]
mov edx, dword [ecx + 4]
push edx
call dword [sym.imp.KERNEL32.dll_ResumeThread]
mov eax, dword [0x604b50]
mov ecx, dword [eax + 8]
push ecx
call dword [sym.imp.KERNEL32.dll_DebugActiveProcess]
mov dword [ebp - 0x34], eax
mov edx, dword [0x604b50]
mov eax, dword [edx + 4]
push eax
call dword [sym.imp.KERNEL32.dll_SuspendThread]
mov ecx, dword [ebp - 0x14]
push ecx
push 0
mov edx, dword [0x604b50]
push edx
call fcn.0054fcf0
add esp, 0xc
mov eax, dword [0x604b50]
mov ecx, dword [eax + 4]
push ecx
mov edx, dword [0x604b50]
mov eax, dword [edx + 0xc]
push eax
call fcn.0054f0e0
add esp, 8
mov dword [ebp - 0x1c], 0
lea ecx, [ebp - 0x1c]
push ecx
push 0
mov edx, dword [0x604b50]
mov eax, dword [edx]
push eax
push 0x54c5c0
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 0x54fc81
call dword [sym.imp.KERNEL32.dll_FreeConsole]
push 0x61c5bc
call dword [sym.imp.KERNEL32.dll_InitializeCriticalSection]
lea edx, [ebp - 0x2c]
push edx
mov eax, dword [ebp - 0x24]
push eax
call fcn.0054cfc0
add esp, 8
movzx ecx, al
test ecx, ecx
jne 0x54fca7
xor al, al
jmp 0x54fcd1
mov edx, dword [0x61c608]
push edx
call dword [sym.imp.KERNEL32.dll_UnmapViewOfFile]
mov dword [0x61c608], 0
mov eax, dword [ebp - 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [ebp - 0x10], 0xffffffff
mov al, 1
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop esi
mov ecx, dword [ebp - 0x44]
xor ecx, ebp
call fcn.005aff32
mov esp, ebp
pop ebp
ret