Static task
static1
Behavioral task
behavioral1
Sample
GSFF.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
GSFF.exe
Resource
win10v2004-20231215-en
General
-
Target
GSFF.exe
-
Size
7.1MB
-
MD5
8e1f3c3e65de174563039231f49f7fea
-
SHA1
307ef2bea219e40b51624289f8d300f2f808809f
-
SHA256
4a6314563b15c3fa649b0d2c9a35aa150fe18e381c1055348adc6a475e1a6c7a
-
SHA512
22f98e3d2addba541a28d502151f5b4ff08c9f7f9c4a0607c3018a83e41630b866389c62cc7fbefbfe10f38012a0e39255761cd2d7cf5c5676506904468eb1c8
-
SSDEEP
98304:EFJAMFaGCfjMYhFe1uYulsCazRzzNNlCxg0zfbv52ZWW9bZX6/fSIOSJzeOUgKvk:EJAxtYR4azRzQCSrwbZK/j3UgK572
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource GSFF.exe
Files
-
GSFF.exe.exe windows:6 windows x64 arch:x64
a8df167f8d1544789c2ee61aeb69edf1
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
d3d11
D3D11CreateDeviceAndSwapChain
d3dcompiler_43
D3DCompile
kernel32
GlobalAlloc
QueryPerformanceFrequency
GetProcAddress
VerSetConditionMask
MultiByteToWideChar
FreeLibrary
QueryPerformanceCounter
ReadFile
SetHandleInformation
VirtualProtect
VirtualFree
GetStdHandle
WriteFile
LoadLibraryA
OutputDebugStringW
GetLocaleInfoEx
GetFileInformationByHandleEx
GetTickCount
AreFileApisANSI
SetFileInformationByHandle
GlobalFree
GetModuleHandleA
GlobalUnlock
GlobalLock
VirtualAlloc
GetFileAttributesExW
MoveFileExA
TerminateProcess
CreatePipe
GetTempPathW
WaitForSingleObject
FindNextFileW
CreateFileW
OpenProcess
CreateToolhelp32Snapshot
FindFirstFileExW
FindFirstFileW
FindClose
GetCurrentDirectoryW
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
GetStartupInfoW
IsDebuggerPresent
IsProcessorFeaturePresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
SleepConditionVariableSRW
WakeAllConditionVariable
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
GetFileSizeEx
CreateFileA
WaitForMultipleObjects
PeekNamedPipe
GetFileType
GetEnvironmentVariableA
WaitForSingleObjectEx
Sleep
Process32NextW
DeleteFileW
Process32FirstW
CloseHandle
LoadLibraryW
GetTempFileNameW
CreateProcessA
GetLastError
HeapDestroy
HeapAlloc
HeapReAlloc
HeapFree
HeapSize
GetProcessHeap
InitializeCriticalSectionEx
DeleteCriticalSection
GetCurrentProcess
CreateThread
VerifyVersionInfoA
GetSystemDirectoryA
SleepEx
LeaveCriticalSection
EnterCriticalSection
LocalFree
FormatMessageA
CreateFileMappingW
MapViewOfFile
UnmapViewOfFile
SetLastError
QueryFullProcessImageNameW
GetModuleHandleW
GetModuleFileNameA
WideCharToMultiByte
user32
GetCursorPos
SetCursorPos
EmptyClipboard
GetClipboardData
SetClipboardData
ReleaseCapture
IsWindowUnicode
GetClientRect
OpenClipboard
DefWindowProcW
GetWindowRect
DestroyWindow
SetWindowRgn
SetCapture
GetSystemMetrics
UnregisterClassW
RegisterClassExW
CloseClipboard
SetCursor
ShowWindow
DispatchMessageW
PeekMessageW
MessageBoxA
MoveWindow
SetLayeredWindowAttributes
TranslateMessage
LoadIconW
PostQuitMessage
UpdateWindow
GetKeyState
ScreenToClient
GetCapture
ClientToScreen
TrackMouseEvent
GetForegroundWindow
LoadCursorW
CreateWindowExW
gdi32
CreateRoundRectRgn
imm32
ImmReleaseContext
ImmSetCompositionWindow
ImmSetCandidateWindow
ImmGetContext
msvcp140
_Query_perf_frequency
?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAPEAV12@PEAD_J@Z
?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?_Xlength_error@std@@YAXPEBD@Z
?setw@std@@YA?AU?$_Smanip@_J@1@_J@Z
?_Xbad_function_call@std@@YAXXZ
?_Throw_Cpp_error@std@@YAXH@Z
?_New_Locimp@_Locimp@locale@std@@CAPEAV123@AEBV123@@Z
?_Init@locale@std@@CAPEAV_Locimp@12@_N@Z
?uncaught_exception@std@@YA_NXZ
?_Xout_of_range@std@@YAXPEBD@Z
?cerr@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?_Winerror_map@std@@YAHH@Z
?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAXAEBVlocale@2@@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@H@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAVios_base@1@AEAV21@@Z@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
??Bid@locale@std@@QEAA_KXZ
?_Incref@facet@locale@std@@UEAAXXZ
?_Decref@facet@locale@std@@UEAAPEAV_Facet_base@3@XZ
?_Addfac@_Locimp@locale@std@@AEAAXPEAVfacet@23@_K@Z
?out@?$codecvt@_WDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEB_W1AEAPEB_WPEAD3AEAPEAD@Z
??0?$codecvt@_WDU_Mbstatet@@@std@@QEAA@_K@Z
??1?$codecvt@_WDU_Mbstatet@@@std@@MEAA@XZ
?good@ios_base@std@@QEBA_NXZ
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAV01@AEAV01@@Z@Z
??4?$_Yarn@D@std@@QEAAAEAV01@PEBD@Z
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z
?id@?$codecvt@_WDU_Mbstatet@@@std@@2V0locale@2@A
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
?_Syserror_map@std@@YAPEBDH@Z
_Cnd_do_broadcast_at_thread_exit
_Query_perf_counter
_Thrd_detach
dwmapi
DwmExtendFrameIntoClientArea
d3dx11_43
D3DX11CreateShaderResourceViewFromMemory
normaliz
IdnToAscii
wldap32
ord27
ord26
ord22
ord200
ord35
ord32
ord41
ord50
ord45
ord60
ord79
ord211
ord46
ord33
ord217
ord30
ord143
ord301
crypt32
CertFreeCertificateChainEngine
CryptStringToBinaryA
PFXImportCertStore
CryptDecodeObjectEx
CertAddCertificateContextToStore
CertFindExtension
CertGetNameStringA
CertOpenStore
CertCloseStore
CertEnumCertificatesInStore
CryptQueryObject
CertFreeCertificateChain
CertGetCertificateChain
CertFindCertificateInStore
CertCreateCertificateChainEngine
CertFreeCertificateContext
ws2_32
ntohl
gethostname
sendto
recvfrom
freeaddrinfo
getaddrinfo
__WSAFDIsSet
ioctlsocket
WSACleanup
listen
htonl
accept
select
WSAStartup
WSAIoctl
WSASetLastError
closesocket
recv
socket
setsockopt
ntohs
htons
send
WSAGetLastError
getsockopt
getsockname
bind
getpeername
connect
rpcrt4
UuidToStringA
UuidCreate
RpcStringFreeA
psapi
GetModuleInformation
userenv
UnloadUserProfile
vcruntime140_1
__CxxFrameHandler4
vcruntime140
memcpy
__std_terminate
strstr
__std_exception_destroy
__std_exception_copy
_CxxThrowException
memchr
memcmp
memmove
memset
strchr
strrchr
__current_exception
__C_specific_handler
__current_exception_context
api-ms-win-crt-stdio-l1-1-0
__stdio_common_vsscanf
fwrite
_set_fmode
_lseeki64
__p__commode
fseek
__stdio_common_vsprintf
_read
feof
__stdio_common_vfprintf
fputs
fopen
fputc
__acrt_iob_func
_write
_close
_open
_wfopen
_popen
_pclose
fgets
ftell
fclose
fread
fflush
api-ms-win-crt-utility-l1-1-0
qsort
api-ms-win-crt-string-l1-1-0
strncmp
strcmp
strspn
isupper
_strdup
strpbrk
tolower
strcspn
strncpy
api-ms-win-crt-heap-l1-1-0
realloc
_set_new_mode
free
malloc
_callnewh
calloc
api-ms-win-crt-runtime-l1-1-0
_initialize_narrow_environment
terminate
_errno
system
strerror
abort
__sys_nerr
_invalid_parameter_noinfo
_resetstkoflw
exit
_invalid_parameter_noinfo_noreturn
_wassert
_register_thread_local_exe_atexit_callback
_c_exit
_getpid
_exit
_initterm_e
_initterm
_get_narrow_winmain_command_line
_set_app_type
_seh_filter_exe
_cexit
_crt_atexit
_register_onexit_function
_initialize_onexit_table
_beginthreadex
_configure_narrow_argv
api-ms-win-crt-convert-l1-1-0
strtoul
strtoull
strtod
strtoll
atoi
strtol
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
___lc_codepage_func
localeconv
api-ms-win-crt-math-l1-1-0
sqrtf
__setusermatherr
acosf
ceilf
cos
cosf
fmodf
powf
sin
sinf
_dclass
api-ms-win-crt-time-l1-1-0
_gmtime64
_time64
api-ms-win-crt-filesystem-l1-1-0
_stat64
_access
_unlink
_fstat64
advapi32
CryptEncrypt
OpenProcessToken
CryptImportKey
CryptDestroyKey
AddAccessAllowedAce
GetLengthSid
GetTokenInformation
InitializeAcl
IsValidSid
SetSecurityInfo
CopySid
ConvertSidToStringSidA
CryptAcquireContextA
CryptReleaseContext
CryptGetHashParam
CryptGenRandom
CryptCreateHash
CryptHashData
CryptDestroyHash
shell32
ShellExecuteA
Sections
.text Size: 723KB - Virtual size: 722KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 180KB - Virtual size: 179KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 6.2MB - Virtual size: 6.2MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 30KB - Virtual size: 30KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 488B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ