Function at 0x4386c0
Capabilities:
Check for time delay via queryperformancecounter
Get process image filename

Disassembly:
push ebp
mov ebp, esp
push ebx
push edi
push esi
and esp, 0xfffffff8
sub esp, 0x2b0
mov ebx, ecx
mov eax, dword [0x644040]
xor eax, ebp
mov dword [esp + 0x2a8], eax
xor eax, eax
dec eax
mov dword [esp + 0x3c], eax
mov dword [esp + 0x38], eax
mov ecx, dword [fcn.0055f760]
cmp ecx, 0x552d10
mov dword [esp + 0x14], ebx
jne 0x43883b
xor eax, eax
lea esi, [esp + 0x68]
mov dword [esi + 4], eax
mov dword [esi], eax
push esi
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov edi, dword [esi]
mov esi, dword [esi + 4]
mov eax, 0x7bd05af7
cmp edi, eax
mov eax, esi
mov ecx, 0x863
sbb eax, ecx
jge 0x43913c
mov ecx, 0xf4240
mov eax, edi
mul ecx
imul ecx, esi, 0xf4240
add ecx, edx
push dword [0x6496cc]
push dword [0x6496c8]
push ecx
push eax
call fcn.00586340
mov dword [esp + 0x38], eax
mov dword [esp + 0x3c], edx
pcmpeqd xmm0, xmm0
movdqu xmmword [ebx], xmm0
movdqu xmmword [ebx + 0x10], xmm0
movdqu xmmword [ebx + 0x20], xmm0
mov eax, ebx
xor ebx, ebx
mov byte [eax], bl
mov byte [eax + 0x18], bl
pxor xmm0, xmm0
movq qword [eax + 0x20], xmm0
mov dword [eax + 0x28], ebx
xor eax, eax
dec eax
mov dword [esp + 0x2c], eax
mov dword [esp + 0x30], eax
mov dword [esp + 0x34], eax
lea edi, [esp + 0x5c]
mov dword [edi], eax
mov dword [edi + 4], eax
mov dword [edi + 8], eax
lea esi, [esp + 0x68]
push 0x23c
push 0xff
push esi
call fcn.00567640
add esp, 0xc
mov ecx, esi
push ebx
mov ebx, esi
call fcn.004393f0
mov ecx, esi
push edi
call fcn.00439450
mov dword [esi], 0x6215e4
push dword [esi + 4]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov eax, dword [esi + 0x238]
mov ecx, eax
shr ecx, 0xe
mov edx, eax
shr edx, 0x13
mov edx, dword [edx*4 + 0x64c810]
bt edx, ecx
jb 0x43909a
cmp dword [esp + 0x64], 0
je 0x4390c8
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
mov edi, eax
mov dword [esp + 0x68], ebx
mov dword [esp + 0x6c], ebx
mov dword [esp + 0x70], 0
mov ebx, dword [esp + 0x60]
xor eax, eax
lea edx, [esp + 0x5c]
cmp ebx, edx
je 0x439000
mov ecx, ebx
cmp dword [ecx + 0x10], edi
je 0x438850
mov ecx, dword [ecx + 4]
cmp ecx, edx
jne 0x43882a
jmp 0x439000
call dword [0x63e1bc]
lea eax, [esp + 0x38]
push eax
call ecx
add esp, 4
jmp 0x438759
mov esi, dword [ecx + 0x20]
push 0xc
call fcn.00562bc5
add esp, 4
test eax, eax
je 0x438fd2
mov dword [eax + 8], esi
lea ecx, [esp + 0x68]
mov dword [eax + 4], ecx
mov dword [eax], ecx
mov dword [esp + 0x6c], eax
mov dword [esp + 0x68], eax
mov dword [esp + 0x70], 1
test esi, esi
je 0x438ffd
pxor xmm0, xmm0
movq qword [esp + 0x50], xmm0
mov dword [esp + 0x58], 0
lea eax, [esp + 0x5c]
jmp 0x4388a8
mov ebx, dword [ebx + 4]
cmp ebx, eax
je 0x4388c0
cmp dword [ebx + 0x10], esi
jne 0x4388a1
add ebx, 0x2c
je 0x438fcb
lea ecx, [esp + 0x50]
push ebx
call fcn.0040f780
movsx eax, byte [esp + 0x5b]
test eax, eax
jns 0x4388cd
mov eax, dword [esp + 0x54]
test eax, eax
je 0x439110
lea ebx, [esp + 0x44]
xor eax, eax
dec eax
mov dword [ebx], eax
mov dword [ebx + 4], eax
mov dword [ebx + 8], eax
push ebx
call fcn.00439530
lea edx, [esp + 0x50]
movsx eax, byte [edx + 0xb]
test eax, eax
cmovs eax, dword [edx + 4]
mov ecx, dword [edx]
cmovns ecx, edx
test eax, eax
js 0x438fd9
sete dl
test ecx, ecx
setne dh
or dh, dl
je 0x438fe0
push eax
push ecx
push 0xc
push str.explorer.exe
call fcn.00439260
add esp, 0x10
test eax, eax
je 0x439077
movsx eax, byte [esp + 0x4f]
test eax, eax
cmovs eax, dword [esp + 0x48]
mov ecx, dword [esp + 0x44]
cmovns ecx, ebx
test eax, eax
js 0x438fd9
sete dl
mov dword [esp], ecx
test ecx, ecx
setne dh
or dh, dl
je 0x438fe0
movsx ebx, byte [esp + 0x5b]
test ebx, ebx
cmovs ebx, dword [esp + 0x54]
mov edx, dword [esp + 0x50]
lea ecx, [esp + 0x50]
cmovns edx, ecx
test ebx, ebx
js 0x438fd9
sete cl
test edx, edx
setne ch
or ch, cl
je 0x438fe0
cmp ebx, eax
setne cl
mov dword [esp + 0xc], ecx
jne 0x4389b8
mov dword [esp + 8], eax
test ebx, ebx
je 0x4389b8
xor ebx, ebx
mov eax, dword [esp]
movzx ecx, word [edx + ebx*2]
cmp cx, word [eax + ebx*2]
setne cl
mov dword [esp + 0xc], ecx
je 0x4390a8
mov ebx, dword [esp + 0x60]
lea eax, [esp + 0x5c]
jmp 0x4389c5
mov ebx, dword [ebx + 4]
cmp ebx, eax
je 0x438ae9
cmp dword [ebx + 0x10], edi
je 0x4389c2
cmp dword [ebx + 0x20], esi
jne 0x4389c2
movsx edx, byte [esp + 0x5b]
test edx, edx
cmovs edx, dword [esp + 0x54]
mov ecx, dword [esp + 0x50]
lea eax, [esp + 0x50]
cmovns ecx, eax
test edx, edx
js 0x438fd9
sete al
mov dword [esp + 4], ecx
test ecx, ecx
setne cl
or cl, al
je 0x438fe0
mov dword [esp + 8], edx
mov eax, ebx
add eax, 0x2c
je 0x438ff6
push eax
mov dword [esp + 4], eax
call fcn.005643e2
add esp, 4
push dword [esp + 8]
push dword [esp + 8]
push eax
push dword [esp + 0xc]
call fcn.00439260
add esp, 0x10
test eax, eax
lea eax, [esp + 0x5c]
jne 0x4389c2
movsx ecx, byte [esp + 0x4f]
test ecx, ecx
cmovs ecx, dword [esp + 0x48]
mov edx, dword [esp + 0x44]
lea eax, [esp + 0x44]
cmovns edx, eax
test ecx, ecx
js 0x438fd9
mov dword [esp + 8], ecx
sete al
mov dword [esp + 4], edx
test edx, edx
setne cl
or cl, al
je 0x438fe0
push dword [esp]
call fcn.005643e2
add esp, 4
push dword [esp + 8]
push dword [esp + 8]
push eax
push dword [esp + 0xc]
call fcn.00439260
add esp, 0x10
test eax, eax
lea eax, [esp + 0x5c]
je 0x4389c2
mov eax, dword [ebx + 0x10]
mov dword [esp], eax
push 0xc
call fcn.00562bc5
add esp, 4
test eax, eax
je 0x438fd2
mov ecx, dword [esp]
mov dword [eax + 8], ecx
lea ecx, [esp + 0x68]
mov dword [eax + 4], ecx
mov ecx, dword [esp + 0x68]
mov dword [eax], ecx
mov dword [ecx + 4], eax
mov dword [esp + 0x68], eax
inc dword [esp + 0x70]
lea eax, [esp + 0x5c]
jmp 0x4389c2
lea eax, [esp + 0x2c]
mov dword [eax], eax
mov dword [eax + 4], eax
mov dword [eax + 8], 0
cmp dword [esp + 0x70], 0
je 0x438b34
mov ecx, dword [esp + 0x68]
mov edx, dword [esp + 0x6c]
mov esi, dword [ecx + 4]
mov edi, dword [edx]
mov dword [edi + 4], esi
mov edi, dword [edx]
mov dword [esi], edi
mov esi, dword [esp + 0x2c]
mov dword [esi + 4], edx
mov dword [edx], esi
mov dword [esp + 0x2c], ecx
mov dword [ecx + 4], eax
mov eax, dword [esp + 0x70]
add dword [esp + 0x34], eax
mov dword [esp + 0x70], 0
cmp byte [esp + 0x4f], 0
lea ebx, [esp + 0x68]
jns 0x438b4b
push dword [esp + 0x44]
call fcn.00562bc0
add esp, 4
cmp byte [esp + 0x5b], 0
jns 0x438b5e
push dword [esp + 0x50]
call fcn.00562bc0
add esp, 4
mov eax, dword [esp + 0x70]
test eax, eax
je 0x438ba0
mov ecx, dword [esp + 0x68]
mov eax, dword [esp + 0x6c]
mov ecx, dword [ecx + 4]
mov edx, dword [eax]
mov dword [edx + 4], ecx
mov edx, dword [eax]
mov dword [ecx], edx
mov dword [esp + 0x70], 0
cmp eax, ebx
je 0x438ba0
test eax, eax
je 0x438fe7
mov esi, dword [eax + 4]
push eax
call fcn.00562bc0
add esp, 4
mov eax, esi
cmp esi, ebx
jne 0x438b86
mov dword [esp + 8], 0
cmp dword [esp + 0x64], 0
je 0x438bf1
mov ecx, dword [esp + 0x5c]
mov eax, dword [esp + 0x60]
mov ecx, dword [ecx + 4]
mov edx, dword [eax]
mov dword [edx + 4], ecx
mov edx, dword [eax]
mov dword [ecx], edx
mov dword [esp + 0x64], 0
lea ecx, [esp + 0x5c]
cmp eax, ecx
je 0x438bf1
test eax, eax
je 0x438fe7
mov esi, dword [eax + 4]
push eax
call fcn.00562bc0
add esp, 4
mov eax, esi
lea ecx, [esp + 0x5c]
cmp esi, ecx
jne 0x438bd3
cmp dword [esp + 0x34], 0
je 0x4390b8
mov eax, dword [esp + 0x30]
push dword [eax + 8]
push 0
push 0x400
call dword [sym.imp.KERNEL32.dll_OpenProcess]
mov dword [esp], 0
mov esi, 0
test eax, eax
je 0x438c41
mov edi, eax
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
cmp edi, 0xffffffff
je 0x438f81
call fcn.00501530
push esi
call dword [sym.imp.KERNEL32.dll_SetLastError]
mov esi, edi
lea eax, [esi + 1]
mov dword [esp + 0x10], eax
cmp eax, 2
mov dword [esp + 4], esi
jb 0x439063
push 0x20a
push 0xff
push ebx
call fcn.00567640
add esp, 0xc
push 0x104
push ebx
push esi
call sub.KERNEL32.dll_K32GetProcessImageFileNameW
test eax, eax
je 0x439067
xor eax, eax
dec eax
mov dword [esp + 0x5c], eax
mov dword [esp + 0x60], eax
mov dword [esp + 0x64], eax
push ebx
call fcn.005643e2
add esp, 4
lea esi, [esp + 0x5c]
mov ecx, esi
push eax
push ebx
call fcn.00550450
pxor xmm0, xmm0
lea edi, [esp + 0x50]
movq qword [edi], xmm0
mov dword [edi + 8], 0
push edi
push esi
call fcn.00439620
add esp, 8
movzx ecx, byte [edi + 0xb]
test al, al
je 0x439048
test cl, cl
mov esi, dword [esp + 0x54]
mov eax, ecx
cmovs eax, esi
test eax, eax
je 0x439048
mov edi, dword [esp + 0x50]
mov ebx, dword [esp + 0x58]
cmp byte [esp + 0x67], 0
jns 0x438cf8
push dword [esp + 0x5c]
call fcn.00562bc0
add esp, 4
test ebx, ebx
js 0x439084
mov eax, ebx
shr eax, 0x18
mov dword [esp], esi
test eax, eax
jne 0x438d16
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [esp + 8], eax
cmp dword [esp + 0x10], 2
jb 0x438d51
mov dword [esp + 0x10], edi
call fcn.00501530
cmp dword [0x655038], 0
je 0x438f88
mov esi, dword [0x655038]
mov eax, dword [esi]
mov edi, dword [eax]
mov ecx, edi
call dword [0x63e1bc]
mov ecx, esi
push dword [esp + 4]
call edi
mov edi, dword [esp + 0x10]
mov esi, dword [esp + 0x14]
cmp byte [esi + 0x2b], 0
jns 0x438d68
lea eax, [esi + 0x20]
push dword [eax]
call fcn.00562bc0
add esp, 4
mov dword [esi + 0x20], edi
mov eax, dword [esp]
mov dword [esi + 0x24], eax
mov dword [esi + 0x28], ebx
cmp dword [esp + 0x34], 0
je 0x438f6d
push 0
call dword [sym.imp.USER32.dll_GetTopWindow]
test eax, eax
je 0x438f6d
mov edi, eax
mov dword [esp], 0
mov esi, dword [sym.imp.USER32.dll_IsWindowVisible]
mov ebx, dword [sym.imp.USER32.dll_GetWindow]
mov dword [esp + 4], 0
jmp 0x438dbf
mov esi, dword [sym.imp.USER32.dll_IsWindowVisible]
push 2
push edi
call ebx
mov edi, eax
test eax, eax
je 0x438e0f
push edi
call esi
test eax, eax
je 0x438db4
mov dword [esp + 0x68], 0
lea eax, [esp + 0x68]
push eax
push edi
call dword [sym.imp.USER32.dll_GetWindowThreadProcessId]
mov eax, dword [esp + 0x68]
lea ecx, [esp + 0x2c]
mov esi, ecx
mov esi, dword [esi + 4]
cmp esi, ecx
je 0x438dae
cmp dword [esi + 8], eax
jne 0x438de4
jmp 0x439021
call dword [0x63e1bc]
lea eax, [esp + 0x68]
push eax
call ecx
add esp, 4
mov edi, dword [esp + 0x68]
mov edx, dword [esp + 0x6c]
jmp 0x438e7a
mov ecx, dword [fcn.0055f760]
cmp ecx, 0x552d10
mov ebx, dword [esp + 0x14]
jne 0x438df5
xor eax, eax
mov dword [esp + 0x6c], eax
mov dword [esp + 0x68], eax
lea eax, [esp + 0x68]
push eax
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov edi, dword [esp + 0x68]
mov esi, dword [esp + 0x6c]
mov eax, 0x7bd05af7
cmp edi, eax
mov eax, esi
mov ecx, 0x863
sbb eax, ecx
jge 0x4391bc
mov ecx, 0xf4240
mov eax, edi
mul ecx
imul ecx, esi, 0xf4240
add ecx, edx
push dword [0x6496cc]
push dword [0x6496c8]
push ecx
push eax
call fcn.00586340
mov edi, eax
sub edi, dword [esp + 0x38]
sbb edx, dword [esp + 0x3c]
seto al
mov esi, edx
sar esi, 0x1f
test al, al
cmovne edi, esi
add esi, 0x80000000
test al, al
cmove esi, edx
pxor xmm0, xmm0
movdqu xmmword [esp + 0x9c], xmm0
movdqu xmmword [esp + 0x8c], xmm0
movdqu xmmword [esp + 0x7c], xmm0
movdqu xmmword [esp + 0x6c], xmm0
mov dword [esp + 0x68], 0x44
lea eax, [esp + 0x68]
push eax
call dword [sym.imp.KERNEL32.dll_GetStartupInfoW]
mov eax, dword [esp + 0x94]
shr eax, 0xb
and al, 1
cmp byte [ebx + 0x18], 1
je 0x4390ef
test ebx, ebx
je 0x438fd2
mov ecx, dword [esp]
mov dword [ebx], ecx
mov ecx, dword [esp + 4]
mov dword [ebx + 4], ecx
mov dword [ebx + 8], edi
mov dword [ebx + 0xc], esi
mov ecx, dword [esp + 0xc]
mov byte [ebx + 0x10], cl
mov byte [ebx + 0x11], al
mov byte [ebx + 0x18], 1
mov eax, dword [esp + 8]
mov dword [ebx + 0x2c], eax
cmp dword [esp + 0x34], 0
je 0x438f55
lea esi, [esp + 0x2c]
mov ecx, dword [esi]
mov eax, dword [esi + 4]
mov ecx, dword [ecx + 4]
mov edx, dword [eax]
mov dword [edx + 4], ecx
mov edx, dword [eax]
mov dword [ecx], edx
mov dword [esi + 8], 0
cmp eax, esi
je 0x438f55
test eax, eax
je 0x438fe7
mov edi, dword [eax + 4]
push eax
call fcn.00562bc0
add esp, 4
mov eax, edi
cmp edi, esi
jne 0x438f3b
mov ecx, dword [esp + 0x2a8]
xor ecx, ebp
call fcn.00565ea5
mov eax, ebx
lea esp, [ebp - 0xc]
pop esi
pop edi
pop ebx
pop ebp
ret
mov dword [esp], 0
mov dword [esp + 4], 0
jmp 0x438e0f
xor edi, edi
jmp 0x438c38
push 0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push 0x6318bd
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x43924f
mov ecx, eax
cmp eax, sym.browser.exe_GetHandleVerifier
je 0x438fc5
call dword [0x63e1bc]
call ecx
push 0
push eax
call fcn.004292e0
add esp, 8
jmp 0x438d33
push 1
push 0
jmp 0x438fb8
push str....._third_partylibc_srcinclude_string:2719:_assertion___s___nullptr_failed:_string::assign_received_nullptr_n
jmp 0x438fec
push str....._third_partylibc_srcinclude__memoryconstruct_at.h:40:_assertion___location___nullptr_failed:_null_pointer_given_to_construct_at_n
jmp 0x438fec
push str....._third_partylibc_srcinclude_string_view:318:_assertion___len___static_cast_size_type__numeric_limits_difference_type_::max____failed:_string_view::string_view__CharT___size_t_:_length_does_not_fit_in_difference_type_n
jmp 0x438fec
push str....._third_partylibc_srcinclude_string_view:320:_assertion___len__0____s___nullptr_failed:_string_view::string_view__CharT___size_t_:_received_nullptr_n
jmp 0x438fec
push str....._third_partylibc_srcinclude__memoryconstruct_at.h:66:_assertion___loc___nullptr_failed:_null_pointer_given_to_destroy_at_n
push 0x622e92
call fcn.0058fdd0
push str....._third_partylibc_srcinclude_string_view:268:_assertion___s___nullptr_failed:_null_pointer_passed_to_non_null_argument_of_char_traits_..._::length_n
jmp 0x438fec
xor eax, eax
inc eax
lea ecx, [esp + 0x2c]
mov dword [ecx], ecx
mov dword [ecx + 4], ecx
mov dword [ecx + 8], 0
mov dword [esp + 0xc], 0
lea ebx, [esp + 0x68]
jmp 0x438b62
push 0xfffffffffffffff0
push edi
call dword [sym.imp.USER32.dll_GetWindowLongW]
test eax, eax
jns 0x43908b
cmp dword [esp + 4], 0
jne 0x438dae
mov eax, dword [esi + 8]
mov dword [esp], eax
mov dword [esp + 4], edi
jmp 0x438dae
test cl, cl
jns 0x439058
push dword [esp + 0x50]
call fcn.00562bc0
add esp, 4
xor edi, edi
xor esi, esi
xor ebx, ebx
jmp 0x438ce5
xor edi, edi
jmp 0x439070
xor edi, edi
mov dword [esp], 0
xor ebx, ebx
jmp 0x438d0c
mov dword [esp + 0xc], 0
jmp 0x4389b8
mov eax, esi
jmp 0x438d05
mov eax, dword [esi + 8]
mov dword [esp], eax
mov dword [esp + 4], edi
jmp 0x438e0f
push eax
call fcn.004ff570
add esp, 4
jmp 0x4387f3
inc ebx
cmp dword [esp + 8], ebx
jne 0x4389a3
jmp 0x4389b8
mov ebx, dword [esp + 0x14]
mov eax, dword [esp + 8]
mov dword [ebx + 0x2c], eax
jmp 0x438f55
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [esp + 8], eax
lea eax, [esp + 0x2c]
mov dword [eax], eax
mov dword [eax + 4], eax
mov dword [eax + 8], 0
mov dword [esp + 0xc], 0
jmp 0x438ba8
mov ecx, dword [esp]
mov dword [ebx], ecx
mov ecx, dword [esp + 4]
mov dword [ebx + 4], ecx
mov dword [ebx + 8], edi
mov dword [ebx + 0xc], esi
mov ecx, dword [esp + 0xc]
mov byte [ebx + 0x10], cl
mov byte [ebx + 0x11], al
jmp 0x438f0d
lea ecx, [esp + 0x2c]
mov dword [ecx], ecx
mov dword [ecx + 4], ecx
mov dword [ecx + 8], 0
mov edx, ecx
lea ebx, [esp + 0x68]
push ebx
call fcn.005bb660
add esp, 4
mov dword [esp + 0xc], 0
jmp 0x438b4b
mov eax, dword [0x6496c8]
mov dword [esp], eax
mov ecx, dword [0x6496cc]
mov dword [esp + 8], ecx
push ecx
push eax
push esi
push edi
call fcn.00586340
mov ebx, edx
mov ecx, eax
mul dword [esp]
mov dword [esp + 4], eax
mov eax, ecx
imul ecx, dword [esp + 8]
add edx, ecx
imul ecx, ebx, 0xf4240
mov dword [esp + 0xc], ecx
imul ebx, dword [esp]
add ebx, edx
sub edi, dword [esp + 4]
sbb esi, ebx
mov ecx, 0xf4240
mul ecx
mov dword [esp + 4], eax
mov ebx, edx
add ebx, dword [esp + 0xc]
mov eax, edi
mul ecx
imul ecx, esi, 0xf4240
add edx, ecx
push dword [esp + 8]
push dword [esp + 4]
push edx
push eax
call fcn.00586340
add eax, dword [esp + 4]
adc edx, ebx
mov ebx, dword [esp + 0x14]
jmp 0x438751
mov ebx, dword [0x6496c8]
mov dword [esp + 0x20], ebx
mov eax, dword [0x6496cc]
mov dword [esp + 0x10], eax
push eax
push ebx
push esi
push edi
call fcn.00586340
mov dword [esp + 0x24], edx
mov ecx, eax
mul ebx
mov dword [esp + 0x1c], eax
mov dword [esp + 0x28], ecx
imul ecx, dword [esp + 0x10]
add edx, ecx
mov ebx, dword [esp + 0x14]
mov eax, dword [esp + 0x24]
imul ecx, eax, 0xf4240
mov dword [esp + 0x18], ecx
imul eax, dword [esp + 0x20]
add eax, edx
sub edi, dword [esp + 0x1c]
sbb esi, eax
mov ecx, 0xf4240
mov eax, dword [esp + 0x28]
mul ecx
mov dword [esp + 0x1c], eax
add edx, dword [esp + 0x18]
mov dword [esp + 0x18], edx
mov eax, edi
mul ecx
imul ecx, esi, 0xf4240
add edx, ecx
push dword [esp + 0x10]
push dword [esp + 0x24]
push edx
push eax
call fcn.00586340
mov edi, eax
add edi, dword [esp + 0x1c]
adc edx, dword [esp + 0x18]
jmp 0x438e7a
xor eax, eax
push eax
jmp 0x438fb7