Function at 0x420dfb
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 0x420e15
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.004441bf
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 0x420e4d
mov dword [ebp - 0xc], 0x24
jmp 0x420e55
cmp dword [ebp + 0xc], ebx
jne 0x420e55
mov dword [ebp - 0x10], ebx
mov ax, word [edi]
push 0x24
pop ecx
cmp ax, cx
jne 0x420e6c
cmp word [ebp - 0xc], 0
jne 0x420e6c
mov dword [ebp - 0xc], ecx
jmp 0x420e7b
cmp ax, bx
jne 0x420e80
cmp word [ebp - 0x10], 0
jne 0x420e80
mov dword [ebp - 0x10], ebx
inc edi
inc edi
mov dword [ebp + 8], edi
cmp word [edi], 0x20
jne 0x420e8b
inc edi
inc edi
mov dword [ebp + 8], edi
xor eax, eax
mov ax, word [edi]
cmp ax, 0x2a
je 0x420e9c
cmp ax, 0x2d
jne 0x420ea4
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.004441a1
cmp word [edi], 0
jne 0x420f97
cmp dword [ebp + 0x10], 0
je 0x420f90
cmp dword [ebp + 0x10], ebx
je 0x420f90
mov word [esi], 0x2a
xor esi, esi
mov eax, dword [esi + 0x4be004]
mov ebx, dword [ebp - 0x20]
inc eax
inc eax
push eax
push 0x4c0e98
add ebx, 2
push ebx
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0xc
push 1
lea edi, [esi + 0x4be000]
push dword [edi]
lea ebx, [ebx + eax*2]
push ebx
push 0
call dword [sym.imp.SHELL32.dll_SHGetSpecialFolderPathW]
test eax, eax
je 0x420f82
cmp dword [edi], 0x1a
jne 0x420f35
push str.MicrosoftInternet_ExplorerQuick_Launch
push ebx
call dword [sym.imp.KERNEL32.dll_lstrcatW]
push ebx
call fcn.0041488c
pop ecx
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push str.HKCUEnvironment_
lea ecx, [ebp - 0x1c]
call fcn.0044cf95
mov eax, dword [ebp - 0x20]
add eax, 2
push eax
lea ecx, [ebp - 0x1c]
call fcn.0044420d
push 1
push dword [ebp - 0x1c]
mov edi, 0x4d80e0
mov ecx, edi
call fcn.0045f04f
push ebx
push dword [esi + 0x4be004]
mov ecx, edi
call fcn.004438ac
mov ecx, dword [ebp - 0x14]
push 0
push 0
push dword [ebp + 0xc]
push dword [ebp - 0x20]
call fcn.00420dfb
add esi, 8
cmp esi, 0x40
jb 0x420edc
jmp 0x420f94
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 0x4210c1
cmp word [ecx], 0
je 0x4210c1
push 0x7e
pop esi
xor edx, edx
mov dx, word [ecx]
mov eax, edx
call fcn.0040f4c7
test al, al
jne 0x4210ad
cmp dx, 0x2e
je 0x4210a1
cmp dx, 0x24
je 0x4210a1
cmp dx, 0x25
je 0x4210a1
cmp dx, 0x2a
jne 0x420ffa
or bl, 4
jmp 0x4210a1
cmp dx, si
jne 0x42103f
lea eax, [ecx + 2]
cmp word [eax], si
jne 0x42100f
or bl, 2
jmp 0x42109f
cmp dx, si
jne 0x42103f
lea eax, [ecx + 2]
cmp word [eax], 0x2e
jne 0x421022
or bl, 8
jmp 0x42109f
cmp dx, si
jne 0x42103f
lea eax, [ecx + 2]
cmp word [eax], 0x2a
jne 0x421035
or bl, 9
jmp 0x42109f
cmp dx, si
jne 0x42103f
or bl, 1
jmp 0x4210a1
cmp dx, 0x2d
jne 0x4210a1
cmp word [ecx + 2], 0x65
jne 0x421062
cmp word [ecx + 4], 0x6e
jne 0x421062
lea eax, [ecx + 6]
cmp word [eax], 0x76
jne 0x421062
or byte [ebp + 0xf], 0x40
jmp 0x42109f
cmp dx, 0x2d
jne 0x4210a1
cmp word [ecx + 2], 0x72
jne 0x421085
cmp word [ecx + 4], 0x61
jne 0x421085
lea eax, [ecx + 6]
cmp word [eax], 0x77
jne 0x421085
or byte [ebp + 0xb], 0x40
jmp 0x42109f
cmp dx, 0x2d
jne 0x4210a1
cmp word [ecx + 2], 0x65
jne 0x4210a1
lea eax, [ecx + 4]
cmp word [eax], 0x78
jne 0x4210a1
mov byte [ebp + 0x13], 1
mov ecx, eax
inc ecx
inc ecx
cmp word [ecx], 0
jne 0x420fba
cmp byte [ebp + 0xb], 0
je 0x4210c1
lea eax, [ebp + 0x14]
push eax
xor bl, bl
call fcn.00408ddd
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 0x4210da
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 0x4210fe
test byte [ecx + 9], 0xf
jne 0x4210fe
push 1
push edx
lea eax, [ebp - 0x18]
push eax
push edi
call fcn.00454bf7
jmp 0x42110b
push 1
push edx
lea eax, [ebp - 0x18]
push eax
push edi
call fcn.004538d5
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 0x421144
cmp dword [ebp - 8], edi
je 0x421174
xor eax, eax
mov al, byte [ebp + 0xf]
or al, bl
lea ecx, [ebp - 0x30]
push eax
push dword [ebp - 8]
call fcn.0044cf95
mov ecx, dword [ebp - 0x14]
push eax
call fcn.0045b2bf
mov dword [ebp - 8], eax
cmp dword [ebp - 8], edi
je 0x421174
lea eax, [ebp - 0x3c]
push eax
push dword [ebp + 0x14]
lea eax, [ebp - 0x2c]
push eax
lea eax, [ebp - 8]
push eax
call fcn.0045a96e
add esp, 0x10
cmp dword [ebp - 8], edi
je 0x421174
push dword [ebp - 8]
call dword [sym.imp.KERNEL32.dll_lstrlenW]
mov edi, eax
shl edi, 1
jmp 0x421176
xor edi, edi
xor ebx, ebx
cmp word [esi], bx
je 0x42122f
cmp word [ebp - 0xc], bx
je 0x4211ba
cmp dword [ebp - 8], ebx
jne 0x4211a1
push esi
push str.SYSTEMCurrentControlSetControlSession_ManagerEnvironment
push 0x80000002
call fcn.0043efe8
add esp, 0xc
jmp 0x4211ba
push edi
push dword [ebp - 8]
push 1
push esi
push str.SYSTEMCurrentControlSetControlSession_ManagerEnvironment
push 0x80000002
call fcn.0043ef9c
add esp, 0x18
cmp word [esi], bx
je 0x42122f
cmp word [ebp - 0x10], bx
je 0x4211f8
cmp dword [ebp - 8], ebx
jne 0x4211df
push esi
push str.Environment
push 0x80000001
call fcn.0043efe8
add esp, 0xc
jmp 0x4211f8
push edi
push dword [ebp - 8]
push 1
push esi
push str.Environment
push 0x80000001
call fcn.0043ef9c
add esp, 0x18
cmp word [esi], bx
je 0x42122f
cmp byte [ebp + 0x13], 0
je 0x421213
push dword [ebp - 8]
push dword [ebp - 0x14]
call fcn.00447a52
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 0x421226
mov dword [ebp - 0x28], ebx
jmp 0x42122f
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [ebp - 0x28], eax
cmp byte [ebp - 1], 0
je 0x421281
cmp word [ebp - 0x24], 0x2a
je 0x421281
cmp word [ebp - 0x24], 0x2d
je 0x421266
mov al, byte [0x4d7e6d]
cmp al, 0x2d
je 0x421266
cmp byte [ebp - 1], 0x10
je 0x42125f
test al, al
je 0x42125f
mov byte [0x4d7e6e], 1
jmp 0x421281
call fcn.004117d1
jmp 0x421281
push ebx
push 0x4d7c18
mov eax, 0x10000
push eax
push eax
push ebx
push 0x420ce5
call fcn.0043de4f
add esp, 0x18
lea ecx, [ebp - 0x2c]
call fcn.0043dd41
lea ecx, [ebp - 0x30]
call fcn.0043dd41
lea ecx, [ebp - 0x18]
call fcn.0043dd41
lea ecx, [ebp - 0x1c]
call fcn.0043dd41
lea ecx, [ebp - 0x34]
call fcn.0043dd41
mov eax, dword [ebp - 0x28]
pop edi
pop esi
pop ebx
leave
ret 0x10