Function at 0x421ea1
Capabilities:
Create directory
Get common file path
Set environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x3c
push ebx
push esi
push edi
mov edi, dword [ebp + 8]
cmp word [edi], 0x5e
mov dword [ebp - 0x14], ecx
jne 0x421ebb
inc edi
inc edi
mov dword [ebp + 8], edi
push edi
call dword [sym.imp.KERNEL32.DLL_lstrlenW]
add eax, 0x400
push eax
lea ecx, [ebp - 0x34]
call fcn.0043fdb8
mov esi, dword [ebp - 0x34]
xor eax, eax
cmp dword [ebp + 0xc], 0x24
push 0x23
mov dword [ebp - 0x20], esi
mov dword [ebp - 0xc], eax
mov dword [ebp - 0x10], eax
mov dword [ebp - 0x24], eax
pop ebx
jne 0x421ef3
mov dword [ebp - 0xc], 0x24
jmp 0x421efb
cmp dword [ebp + 0xc], ebx
jne 0x421efb
mov dword [ebp - 0x10], ebx
mov ax, word [edi]
push 0x24
pop ecx
cmp ax, cx
jne 0x421f12
cmp word [ebp - 0xc], 0
jne 0x421f12
mov dword [ebp - 0xc], ecx
jmp 0x421f21
cmp ax, bx
jne 0x421f26
cmp word [ebp - 0x10], 0
jne 0x421f26
mov dword [ebp - 0x10], ebx
inc edi
inc edi
mov dword [ebp + 8], edi
cmp word [edi], 0x20
jne 0x421f31
inc edi
inc edi
mov dword [ebp + 8], edi
xor eax, eax
mov ax, word [edi]
cmp ax, 0x2a
je 0x421f42
cmp ax, 0x2d
jne 0x421f4a
inc edi
inc edi
mov dword [ebp - 0x24], eax
mov dword [ebp + 8], edi
and dword [ebp - 0x28], 0
cmp byte [ebp + 0xc], 0
lea ecx, [ebp - 0x1c]
setne byte [ebp - 1]
call fcn.0043fd9a
cmp word [edi], 0
jne 0x42203d
cmp dword [ebp + 0x10], 0
je 0x422036
cmp dword [ebp + 0x10], ebx
je 0x422036
mov word [esi], 0x2a
xor esi, esi
mov eax, dword [esi + 0x4afe34]
mov ebx, dword [ebp - 0x20]
inc eax
inc eax
push eax
push 0x4b30e8
add ebx, 2
push ebx
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0xc
push 1
lea edi, [esi + 0x4afe30]
push dword [edi]
lea ebx, [ebx + eax*2]
push ebx
push 0
call dword [sym.imp.SHELL32.dll_SHGetSpecialFolderPathW]
test eax, eax
je 0x422028
cmp dword [edi], 0x1a
jne 0x421fdb
push str.MicrosoftInternet_ExplorerQuick_Launch
push ebx
call dword [sym.imp.KERNEL32.DLL_lstrcatW]
push ebx
call fcn.00413a9b
pop ecx
push 0
push ebx
call dword [sym.imp.KERNEL32.DLL_CreateDirectoryW]
push str.HKCUEnvironment_
lea ecx, [ebp - 0x1c]
call fcn.00448401
mov eax, dword [ebp - 0x20]
add eax, 2
push eax
lea ecx, [ebp - 0x1c]
call fcn.0043fe06
push 1
push dword [ebp - 0x1c]
mov edi, 0x4c9048
mov ecx, edi
call fcn.00458340
push ebx
push dword [esi + 0x4afe34]
mov ecx, edi
call fcn.0043f62b
mov ecx, dword [ebp - 0x14]
push 0
push 0
push dword [ebp + 0xc]
push dword [ebp - 0x20]
call fcn.00421ea1
add esi, 8
cmp esi, 0x40
jb 0x421f82
jmp 0x42203a
mov byte [ebp - 1], 0x10
mov edi, dword [ebp + 8]
mov ecx, dword [ebp + 0x14]
xor bl, bl
test ecx, ecx
mov byte [ebp + 0xf], bl
mov byte [ebp + 0xb], bl
mov byte [ebp + 0x13], bl
je 0x422167
cmp word [ecx], 0
je 0x422167
push 0x7e
pop esi
xor edx, edx
mov dx, word [ecx]
mov eax, edx
call fcn.0040ea2b
test al, al
jne 0x422153
cmp dx, 0x2e
je 0x422147
cmp dx, 0x24
je 0x422147
cmp dx, 0x25
je 0x422147
cmp dx, 0x2a
jne 0x4220a0
or bl, 4
jmp 0x422147
cmp dx, si
jne 0x4220e5
lea eax, [ecx + 2]
cmp word [eax], si
jne 0x4220b5
or bl, 2
jmp 0x422145
cmp dx, si
jne 0x4220e5
lea eax, [ecx + 2]
cmp word [eax], 0x2e
jne 0x4220c8
or bl, 8
jmp 0x422145
cmp dx, si
jne 0x4220e5
lea eax, [ecx + 2]
cmp word [eax], 0x2a
jne 0x4220db
or bl, 9
jmp 0x422145
cmp dx, si
jne 0x4220e5
or bl, 1
jmp 0x422147
cmp dx, 0x2d
jne 0x422147
cmp word [ecx + 2], 0x65
jne 0x422108
cmp word [ecx + 4], 0x6e
jne 0x422108
lea eax, [ecx + 6]
cmp word [eax], 0x76
jne 0x422108
or byte [ebp + 0xf], 0x40
jmp 0x422145
cmp dx, 0x2d
jne 0x422147
cmp word [ecx + 2], 0x72
jne 0x42212b
cmp word [ecx + 4], 0x61
jne 0x42212b
lea eax, [ecx + 6]
cmp word [eax], 0x77
jne 0x42212b
or byte [ebp + 0xb], 0x40
jmp 0x422145
cmp dx, 0x2d
jne 0x422147
cmp word [ecx + 2], 0x65
jne 0x422147
lea eax, [ecx + 4]
cmp word [eax], 0x78
jne 0x422147
mov byte [ebp + 0x13], 1
mov ecx, eax
inc ecx
inc ecx
cmp word [ecx], 0
jne 0x422060
cmp byte [ebp + 0xb], 0
je 0x422167
lea eax, [ebp + 0x14]
push eax
xor bl, bl
call fcn.00405444
mov edi, dword [eax]
pop ecx
push 0x3d
push edi
call dword [sym.imp.SHLWAPI.dll_StrChrW]
xor edx, edx
cmp eax, edx
mov dword [ebp - 8], eax
je 0x422180
mov word [eax], dx
add dword [ebp - 8], 2
mov ecx, dword [ebp - 0x14]
cmp byte [ecx + 0x92], 0
mov dword [ebp - 0x18], edx
jne 0x4221a4
test byte [ecx + 9], 0xf
jne 0x4221a4
push 1
push edx
lea eax, [ebp - 0x18]
push eax
push edi
call fcn.0044ec85
jmp 0x4221b1
push 1
push edx
lea eax, [ebp - 0x18]
push eax
push edi
call fcn.0044dca2
mov esi, dword [ebp - 0x18]
xor edi, edi
test bl, bl
mov dword [ebp - 0x30], edi
mov dword [ebp - 0x2c], edi
mov dword [ebp - 0x3c], edi
mov dword [ebp - 0x38], edi
je 0x4221ea
cmp dword [ebp - 8], edi
je 0x42221a
xor eax, eax
mov al, byte [ebp + 0xf]
or al, bl
lea ecx, [ebp - 0x30]
push eax
push dword [ebp - 8]
call fcn.00448401
mov ecx, dword [ebp - 0x14]
push eax
call fcn.00453709
mov dword [ebp - 8], eax
cmp dword [ebp - 8], edi
je 0x42221a
lea eax, [ebp - 0x3c]
push eax
push dword [ebp + 0x14]
lea eax, [ebp - 0x2c]
push eax
lea eax, [ebp - 8]
push eax
call fcn.00452e55
add esp, 0x10
cmp dword [ebp - 8], edi
je 0x42221a
push dword [ebp - 8]
call dword [sym.imp.KERNEL32.DLL_lstrlenW]
mov edi, eax
shl edi, 1
jmp 0x42221c
xor edi, edi
xor ebx, ebx
cmp word [esi], bx
je 0x4222d5
cmp word [ebp - 0xc], bx
je 0x422260
cmp dword [ebp - 8], ebx
jne 0x422247
push esi
push str.SYSTEMCurrentControlSetControlSession_ManagerEnvironment
push 0x80000002
call fcn.0043ae25
add esp, 0xc
jmp 0x422260
push edi
push dword [ebp - 8]
push 1
push esi
push str.SYSTEMCurrentControlSetControlSession_ManagerEnvironment
push 0x80000002
call fcn.0043add9
add esp, 0x18
cmp word [esi], bx
je 0x4222d5
cmp word [ebp - 0x10], bx
je 0x42229e
cmp dword [ebp - 8], ebx
jne 0x422285
push esi
push str.Environment
push 0x80000001
call fcn.0043ae25
add esp, 0xc
jmp 0x42229e
push edi
push dword [ebp - 8]
push 1
push esi
push str.Environment
push 0x80000001
call fcn.0043add9
add esp, 0x18
cmp word [esi], bx
je 0x4222d5
cmp byte [ebp + 0x13], 0
je 0x4222b9
push dword [ebp - 8]
push dword [ebp - 0x14]
call fcn.004433cc
pop ecx
pop ecx
mov dword [ebp - 8], eax
push dword [ebp - 8]
push esi
call dword [sym.imp.KERNEL32.DLL_SetEnvironmentVariableW]
test eax, eax
je 0x4222cc
mov dword [ebp - 0x28], ebx
jmp 0x4222d5
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov dword [ebp - 0x28], eax
cmp byte [ebp - 1], 0
je 0x422327
cmp word [ebp - 0x24], 0x2a
je 0x422327
cmp word [ebp - 0x24], 0x2d
je 0x42230c
mov al, byte [0x4c8e1d]
cmp al, 0x2d
je 0x42230c
cmp byte [ebp - 1], 0x10
je 0x422305
test al, al
je 0x422305
mov byte [0x4c8e1e], 1
jmp 0x422327
call fcn.00410a65
jmp 0x422327
push ebx
push 0x4c8bd0
mov eax, 0x10000
push eax
push eax
push ebx
push 0x421d8b
call fcn.00439dc6
add esp, 0x18
lea ecx, [ebp - 0x2c]
call fcn.00439cfd
lea ecx, [ebp - 0x30]
call fcn.00439cfd
lea ecx, [ebp - 0x18]
call fcn.00439cfd
lea ecx, [ebp - 0x1c]
call fcn.00439cfd
lea ecx, [ebp - 0x34]
call fcn.00439cfd
mov eax, dword [ebp - 0x28]
pop edi
pop esi
pop ebx
leave
ret 0x10