FSS[.]exe | Triage

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General

Target

FSS.exe
Size

937KB
MD5

40008c9437fa2369778fd54c46fcfb0c
SHA1

c97d9b6e808bf80d07e562ad270773fbfce2ff8e
SHA256

255e5236769d27d37cb3d4677d50fa442eaa1b422d70f4cd68478c762bf4c293
SHA512

b353b0b6a0d71d89c1a2d8b182853ade2753dd8f1722fa9f30d1c206362f20f2ac2dc6db060ba7f9063f84763950ef01e787fb57f72ef75452ecc3243a2b6917
SSDEEP

24576:fqDEvCTbMWu7rQYlBQcBiT6rprG8aZvJ:fTvC/MTQYxsWR7aZ

Score

5^/10

Malware Config

Signatures

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
sample	autoit_exe

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
FSS.exe

Files

FSS.exe
.exe windows:5 windows x86 arch:x86

c4540f421523fe2dc591e50be5ad7d0b

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

wsock32

gethostbyname
recv
send
socket
inet_ntoa
setsockopt
ntohs
WSACleanup
WSAStartup
sendto
htons
__WSAFDIsSet
select
accept
listen
bind
inet_addr
ioctlsocket
recvfrom
WSAGetLastError
closesocket
gethostname
connect

version

GetFileVersionInfoW
VerQueryValueW
GetFileVersionInfoSizeW

winmm

timeGetTime
waveOutSetVolume
mciSendStringW

comctl32

ImageList_ReplaceIcon
ImageList_Destroy
ImageList_Remove
ImageList_SetDragCursorImage
ImageList_BeginDrag
ImageList_DragEnter
ImageList_DragLeave
ImageList_EndDrag
ImageList_DragMove
InitCommonControlsEx
ImageList_Create

mpr

WNetGetConnectionW
WNetCancelConnection2W
WNetUseConnectionW
WNetAddConnection2W

wininet

HttpOpenRequestW
InternetCloseHandle
InternetOpenW
InternetSetOptionW
InternetCrackUrlW
HttpQueryInfoW
InternetQueryOptionW
InternetConnectW
HttpSendRequestW
FtpOpenFileW
FtpGetFileSize
InternetOpenUrlW
InternetReadFile
InternetQueryDataAvailable

psapi

GetProcessMemoryInfo

iphlpapi

IcmpSendEcho
IcmpCloseHandle
IcmpCreateFile

userenv

DestroyEnvironmentBlock
LoadUserProfileW
CreateEnvironmentBlock
UnloadUserProfile

uxtheme

IsThemeActive

kernel32

DuplicateHandle
CreateThread
WaitForSingleObject
HeapAlloc
GetProcessHeap
HeapFree
Sleep
GetCurrentThreadId
MultiByteToWideChar
MulDiv
GetVersionExW
IsWow64Process
GetSystemInfo
FreeLibrary
LoadLibraryA
GetProcAddress
SetErrorMode
GetModuleFileNameW
WideCharToMultiByte
lstrcpyW
lstrlenW
GetModuleHandleW
QueryPerformanceCounter
VirtualFreeEx
OpenProcess
VirtualAllocEx
WriteProcessMemory
ReadProcessMemory
CreateFileW
SetFilePointerEx
SetEndOfFile
ReadFile
WriteFile
FlushFileBuffers
TerminateProcess
CreateToolhelp32Snapshot
Process32FirstW
Process32NextW
SetFileTime
GetFileAttributesW
FindFirstFileW
FindClose
GetLongPathNameW
GetShortPathNameW
DeleteFileW
IsDebuggerPresent
CopyFileExW
MoveFileW
CreateDirectoryW
RemoveDirectoryW
SetSystemPowerState
QueryPerformanceFrequency
LoadResource
LockResource
SizeofResource
OutputDebugStringW
GetTempPathW
GetTempFileNameW
DeviceIoControl
LoadLibraryW
GetLocalTime
CompareStringW
GetCurrentThread
EnterCriticalSection
LeaveCriticalSection
GetStdHandle
CreatePipe
InterlockedExchange
TerminateThread
LoadLibraryExW
FindResourceExW
CopyFileW
VirtualFree
FormatMessageW
GetExitCodeProcess
GetPrivateProfileStringW
WritePrivateProfileStringW
GetPrivateProfileSectionW
WritePrivateProfileSectionW
GetPrivateProfileSectionNamesW
FileTimeToLocalFileTime
FileTimeToSystemTime
SystemTimeToFileTime
LocalFileTimeToFileTime
GetDriveTypeW
GetDiskFreeSpaceExW
GetDiskFreeSpaceW
GetVolumeInformationW
SetVolumeLabelW
CreateHardLinkW
SetFileAttributesW
CreateEventW
SetEvent
GetEnvironmentVariableW
SetEnvironmentVariableW
GlobalLock
GlobalUnlock
GlobalAlloc
GetFileSize
GlobalFree
GlobalMemoryStatusEx
Beep
GetSystemDirectoryW
HeapReAlloc
HeapSize
GetComputerNameW
GetWindowsDirectoryW
GetCurrentProcessId
GetProcessIoCounters
CreateProcessW
GetProcessId
SetPriorityClass
VirtualAlloc
GetCurrentDirectoryW
lstrcmpiW
DecodePointer
GetLastError
RaiseException
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
InterlockedDecrement
InterlockedIncrement
ResetEvent
WaitForSingleObjectEx
IsProcessorFeaturePresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
CloseHandle
GetFullPathNameW
GetStartupInfoW
GetSystemTimeAsFileTime
InitializeSListHead
RtlUnwind
SetLastError
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
EncodePointer
ExitProcess
GetModuleHandleExW
ExitThread
ResumeThread
FreeLibraryAndExitThread
GetACP
GetDateFormatW
GetTimeFormatW
LCMapStringW
GetStringTypeW
GetFileType
SetStdHandle
GetConsoleCP
GetConsoleMode
ReadConsoleW
GetTimeZoneInformation
FindFirstFileExW
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetCurrentDirectoryW
FindNextFileW
WriteConsoleW

user32

GetKeyboardLayoutNameW
IsCharAlphaW
IsCharAlphaNumericW
IsCharLowerW
IsCharUpperW
GetMenuStringW
GetSubMenu
GetCaretPos
IsZoomed
GetMonitorInfoW
SetWindowLongW
SetLayeredWindowAttributes
FlashWindow
GetClassLongW
TranslateAcceleratorW
IsDialogMessageW
GetSysColor
InflateRect
DrawFocusRect
DrawTextW
FrameRect
DrawFrameControl
FillRect
PtInRect
DestroyAcceleratorTable
CreateAcceleratorTableW
SetCursor
GetWindowDC
GetSystemMetrics
GetActiveWindow
CharNextW
wsprintfW
RedrawWindow
DrawMenuBar
DestroyMenu
SetMenu
GetWindowTextLengthW
CreateMenu
IsDlgButtonChecked
DefDlgProcW
CallWindowProcW
ReleaseCapture
SetCapture
PeekMessageW
GetInputState
UnregisterHotKey
CharLowerBuffW
MonitorFromPoint
MonitorFromRect
LoadImageW
mouse_event
ExitWindowsEx
SetActiveWindow
FindWindowExW
EnumThreadWindows
SetMenuDefaultItem
InsertMenuItemW
IsMenu
ClientToScreen
GetCursorPos
DeleteMenu
CheckMenuRadioItem
GetMenuItemID
GetMenuItemCount
SetMenuItemInfoW
GetMenuItemInfoW
SetForegroundWindow
IsIconic
FindWindowW
SystemParametersInfoW
LockWindowUpdate
SendInput
GetAsyncKeyState
SetKeyboardState
GetKeyboardState
GetKeyState
VkKeyScanW
LoadStringW
DialogBoxParamW
MessageBeep
EndDialog
SendDlgItemMessageW
GetDlgItem
SetWindowTextW
CopyRect
ReleaseDC
GetDC
EndPaint
BeginPaint
GetClientRect
GetMenu
DestroyWindow
EnumWindows
GetDesktopWindow
IsWindow
IsWindowEnabled
IsWindowVisible
EnableWindow
InvalidateRect
GetWindowLongW
GetWindowThreadProcessId
AttachThreadInput
GetFocus
GetWindowTextW
SendMessageTimeoutW
EnumChildWindows
CharUpperBuffW
GetClassNameW
GetParent
GetDlgCtrlID
SendMessageW
MapVirtualKeyW
PostMessageW
GetWindowRect
SetUserObjectSecurity
CloseDesktop
CloseWindowStation
OpenDesktopW
RegisterHotKey
GetCursorInfo
SetWindowPos
CopyImage
AdjustWindowRectEx
SetRect
SetClipboardData
EmptyClipboard
CountClipboardFormats
CloseClipboard
GetClipboardData
IsClipboardFormatAvailable
OpenClipboard
BlockInput
TrackPopupMenuEx
GetMessageW
SetProcessWindowStation
GetProcessWindowStation
OpenWindowStationW
GetUserObjectSecurity
MessageBoxW
DefWindowProcW
MoveWindow
SetFocus
PostQuitMessage
KillTimer
CreatePopupMenu
RegisterWindowMessageW
SetTimer
ShowWindow
CreateWindowExW
RegisterClassExW
LoadIconW
LoadCursorW
GetSysColorBrush
GetForegroundWindow
MessageBoxA
DestroyIcon
DispatchMessageW
keybd_event
TranslateMessage
ScreenToClient

gdi32

EndPath
DeleteObject
GetTextExtentPoint32W
ExtCreatePen
StrokeAndFillPath
GetDeviceCaps
SetPixel
CloseFigure
LineTo
AngleArc
MoveToEx
Ellipse
CreateCompatibleBitmap
CreateCompatibleDC
PolyDraw
BeginPath
Rectangle
SetViewportOrgEx
GetObjectW
SetBkMode
RoundRect
SetBkColor
CreatePen
SelectObject
StretchBlt
CreateSolidBrush
SetTextColor
CreateFontW
GetTextFaceW
GetStockObject
CreateDCW
GetPixel
DeleteDC
GetDIBits
StrokePath

comdlg32

GetSaveFileNameW
GetOpenFileNameW

advapi32

GetAce
RegEnumValueW
RegDeleteValueW
RegDeleteKeyW
RegEnumKeyExW
RegSetValueExW
RegOpenKeyExW
RegCloseKey
RegQueryValueExW
RegConnectRegistryW
InitializeSecurityDescriptor
InitializeAcl
AdjustTokenPrivileges
OpenThreadToken
OpenProcessToken
LookupPrivilegeValueW
DuplicateTokenEx
CreateProcessAsUserW
CreateProcessWithLogonW
GetLengthSid
CopySid
LogonUserW
AllocateAndInitializeSid
CheckTokenMembership
FreeSid
GetTokenInformation
RegCreateKeyExW
GetSecurityDescriptorDacl
GetAclInformation
GetUserNameW
AddAce
SetSecurityDescriptorDacl
InitiateSystemShutdownExW

shell32

DragFinish
DragQueryPoint
ShellExecuteExW
DragQueryFileW
SHEmptyRecycleBinW
SHGetPathFromIDListW
SHBrowseForFolderW
SHCreateShellItem
SHGetDesktopFolder
SHGetSpecialFolderLocation
SHGetFolderPathW
SHFileOperationW
ExtractIconExW
Shell_NotifyIconW
ShellExecuteW

ole32

CoTaskMemAlloc
CoTaskMemFree
CLSIDFromString
ProgIDFromCLSID
CLSIDFromProgID
OleSetMenuDescriptor
MkParseDisplayName
OleSetContainedObject
CoCreateInstance
IIDFromString
StringFromGUID2
CreateStreamOnHGlobal
OleInitialize
OleUninitialize
CoInitialize
CoUninitialize
GetRunningObjectTable
CoGetInstanceFromFile
CoGetObject
CoInitializeSecurity
CoCreateInstanceEx
CoSetProxyBlanket

oleaut32

CreateStdDispatch
CreateDispTypeInfo
UnRegisterTypeLi
UnRegisterTypeLibForUser
RegisterTypeLibForUser
RegisterTypeLi
LoadTypeLibEx
VariantCopyInd
SysReAllocString
SysFreeString
VariantChangeType
SafeArrayDestroyData
SafeArrayUnaccessData
SafeArrayAccessData
SafeArrayAllocData
SafeArrayAllocDescriptorEx
SafeArrayCreateVector
SysStringLen
QueryPathOfRegTypeLi
SysAllocString
VariantInit
VariantClear
DispCallFunc
VariantTimeToSystemTime
VarR8FromDec
SafeArrayGetVartype
SafeArrayDestroyDescriptor
VariantCopy
OleLoadPicture

Sections

.text
Size: 619KB - Virtual size: 618KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 191KB - Virtual size: 190KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 18KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 78KB - Virtual size: 78KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 29KB - Virtual size: 29KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

c4540f421523fe2dc591e50be5ad7d0b

Headers

DLL Characteristics

File Characteristics

Imports

wsock32

version

winmm

comctl32

mpr

wininet

psapi

iphlpapi

userenv

uxtheme

kernel32

user32

gdi32

comdlg32

advapi32

shell32

ole32

oleaut32

Sections

.text Size: 619KB - Virtual size: 618KB

.rdata Size: 191KB - Virtual size: 190KB

.data Size: 18KB - Virtual size: 28KB

.rsrc Size: 78KB - Virtual size: 78KB

.reloc Size: 29KB - Virtual size: 29KB

.text
Size: 619KB - Virtual size: 618KB

.rdata
Size: 191KB - Virtual size: 190KB

.data
Size: 18KB - Virtual size: 28KB

.rsrc
Size: 78KB - Virtual size: 78KB

.reloc
Size: 29KB - Virtual size: 29KB