SKCat[.]exe | Triage

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General

Target

SKCat.exe
Size

15.0MB
MD5

b2bfd785d358b0af485147a8f32f0e84
SHA1

9a4ca2ba437be2367d0a8f5375fdabc98ef137e1
SHA256

22be5417c577eaa931dfd3a1e497bf25656207512efdab55297267d0b9846f21
SHA512

3d8f56692c97a6add0bada0f1ac82d0e2cbaf60dd715b6ec123cd97bd3c6084364a38782af1aa8b33221960d42254389b0f83a266210e019cbc6669c92989c66
SSDEEP

393216:THrQ09BsQiasvvLNOmYg3r3d51AyzmkiFi4P:THrQ096hasvvLNfpbN5aYgIq

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
SKCat.exe

Files

SKCat.exe
.exe windows x86

a35e088077bc2d0f8655c7df79417117

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

winmm

midiStreamOut
midiOutPrepareHeader
midiStreamProperty
midiStreamOpen
waveOutUnprepareHeader
waveOutPrepareHeader
waveOutWrite
waveOutPause
waveOutReset
waveOutClose
waveOutGetNumDevs
waveOutOpen
midiOutUnprepareHeader
midiStreamStop
midiOutReset
midiStreamClose
midiStreamRestart
waveOutRestart

ws2_32

recvfrom
setsockopt
socket
bind
htons
WSAAsyncSelect
closesocket
send
ioctlsocket
WSACleanup
WSAStartup
gethostbyname
inet_ntoa
inet_addr
gethostname
ntohl
connect
recv
listen
getpeername
accept
WSAGetLastError
__WSAFDIsSet
ntohs
getsockname
select
shutdown

rasapi32

RasHangUpA
RasGetConnectStatusA

kernel32

CreateSemaphoreA
TerminateThread
MapViewOfFile
CreateFileMappingA
LocalFree
UnmapViewOfFile
FormatMessageA
SetFilePointer
GetFileSize
GetCurrentProcess
TerminateProcess
GetWindowsDirectoryA
ResumeThread
SetLastError
GetTimeZoneInformation
GetLocaleInfoA
GetVersion
FileTimeToSystemTime
CreateMutexA
ReleaseMutex
SuspendThread
GetACP
SetNamedPipeHandleState
WaitNamedPipeA
OpenFileMappingA
OpenEventA
TlsAlloc
TlsFree
TlsSetValue
TlsGetValue
InterlockedIncrement
InterlockedDecrement
RaiseException
GetLocalTime
GetSystemTime
ExitThread
RtlUnwind
GetStartupInfoA
GetOEMCP
GetCPInfo
GetProcessVersion
SetErrorMode
GlobalFlags
GetCurrentThread
GetFileTime
LocalReAlloc
GlobalHandle
LocalAlloc
lstrcmpA
GlobalGetAtomNameA
GlobalAddAtomA
GlobalFindAtomA
GlobalDeleteAtom
lstrcmpiA
SetEndOfFile
UnlockFile
LockFile
FlushFileBuffers
DuplicateHandle
lstrcpynA
FileTimeToLocalFileTime
ReleaseSemaphore
EnterCriticalSection
LeaveCriticalSection
GetProfileStringA
WriteFile
WaitForMultipleObjects
CreateFileA
SetEvent
FindResourceA
LoadResource
LockResource
ReadFile
lstrlenW
RemoveDirectoryA
GetModuleFileNameA
WideCharToMultiByte
MultiByteToWideChar
GetCurrentThreadId
ExitProcess
GlobalSize
GlobalFree
DeleteCriticalSection
InitializeCriticalSection
lstrcatA
lstrlenA
WinExec
lstrcpyA
FindNextFileA
GetDriveTypeA
GlobalReAlloc
HeapFree
HeapReAlloc
GetProcessHeap
HeapAlloc
GetUserDefaultLCID
GetFullPathNameA
FreeLibrary
LoadLibraryA
GetLastError
GetVersionExA
WritePrivateProfileStringA
GetPrivateProfileStringA
CreateThread
CreateEventA
Sleep
ExpandEnvironmentStringsA
GlobalAlloc
GlobalLock
InterlockedExchange
GlobalUnlock
GetTempPathA
FindFirstFileA
FindClose
GetFileAttributesA
DeleteFileA
GetCurrentDirectoryA
SetCurrentDirectoryA
GetVolumeInformationA
GetModuleHandleA
GetProcAddress
GetDiskFreeSpaceA
MulDiv
GetCommandLineA
GetTickCount
CreateProcessA
WaitForSingleObject
CloseHandle
GetFileType
SetEnvironmentVariableA
HeapSize
SetStdHandle
UnhandledExceptionFilter
FreeEnvironmentStringsA
FreeEnvironmentStringsW
GetEnvironmentStrings
GetEnvironmentStringsW
SetHandleCount
GetStdHandle
GetEnvironmentVariableA
HeapDestroy
HeapCreate
VirtualFree
SetEnvironmentVariableW
LCMapStringA
LCMapStringW
VirtualAlloc
IsBadWritePtr
GetStringTypeA
GetStringTypeW
SetUnhandledExceptionFilter
IsValidLocale
IsValidCodePage
EnumSystemLocalesA
CompareStringA
CompareStringW
IsBadReadPtr
IsBadCodePtr
GetLocaleInfoW
GetSystemDirectoryA

user32

LoadBitmapA
WinHelpA
KillTimer
SetTimer
ReleaseCapture
GetCapture
SetCapture
GetScrollRange
SetScrollRange
CopyRect
ChildWindowFromPointEx
ScreenToClient
GetMessagePos
SetWindowRgn
DestroyAcceleratorTable
GetWindow
GetActiveWindow
SetFocus
IsIconic
PeekMessageA
SetMenu
LoadStringA
GetMenuCheckMarkDimensions
GetMenuState
SetMenuItemBitmaps
GetSysColorBrush
ShowWindow
SystemParametersInfoA
LoadImageA
EnumDisplaySettingsA
ClientToScreen
EnableMenuItem
GetSubMenu
GetDlgCtrlID
CreateAcceleratorTableA
CreateMenu
ModifyMenuA
AppendMenuA
CreatePopupMenu
DrawIconEx
CreateIconFromResource
CreateIconFromResourceEx
RegisterClipboardFormatA
SetRectEmpty
GetMessageA
WindowFromPoint
SetScrollPos
SetRect
InflateRect
IntersectRect
DestroyIcon
PtInRect
DrawFocusRect
IsWindowVisible
EnableWindow
RedrawWindow
GetWindowLongA
SetWindowLongA
GetSysColor
SetActiveWindow
SetCursorPos
LoadCursorA
SetCursor
CheckMenuItem
MoveWindow
IsDialogMessageA
ScrollWindowEx
SendDlgItemMessageA
MapWindowPoints
GetMenu
GetScrollPos
RegisterClassA
GetMenuItemCount
GetMenuItemID
CreateWindowExA
SetWindowsHookExA
CallNextHookEx
GetClassLongA
SetPropA
UnhookWindowsHookEx
GetPropA
CallWindowProcA
RemovePropA
GetMessageTime
GetLastActivePopup
RegisterWindowMessageA
GetWindowPlacement
GetNextDlgTabItem
EndDialog
CreateDialogIndirectParamA
DestroyWindow
GrayStringA
DrawTextA
TabbedTextOutA
GetDC
FillRect
IsRectEmpty
ReleaseDC
IsChild
DestroyMenu
SetForegroundWindow
GetWindowRect
EqualRect
UpdateWindow
ValidateRect
InvalidateRect
GetClientRect
GetFocus
GetParent
GetTopWindow
PostMessageA
IsWindow
SetParent
DestroyCursor
SendMessageA
SetWindowPos
MessageBoxA
GetCursorPos
GetSystemMetrics
EmptyClipboard
SetClipboardData
OpenClipboard
GetClipboardData
CloseClipboard
wsprintfA
WaitForInputIdle
DeleteMenu
GetSystemMenu
DefWindowProcA
GetClassInfoA
IsZoomed
PostQuitMessage
CopyAcceleratorTableA
GetKeyState
DrawEdge
DrawFrameControl
TranslateMessage
LoadIconA
UnregisterClassA
GetDesktopWindow
GetClassNameA
GetDlgItem
GetWindowTextA
GetForegroundWindow
SetWindowTextA
TranslateAcceleratorA
IsWindowEnabled
AdjustWindowRectEx
OffsetRect
DispatchMessageA
GetWindowTextLengthA
CharUpperA
GetWindowDC
BeginPaint
EndPaint

gdi32

ExtSelectClipRgn
LineTo
MoveToEx
ExcludeClipRect
GetClipBox
ScaleWindowExtEx
SetWindowExtEx
SetWindowOrgEx
ScaleViewportExtEx
SetViewportExtEx
OffsetViewportOrgEx
GetTextExtentPoint32A
GetDeviceCaps
GetPolyFillMode
GetStretchBltMode
GetROP2
GetBkColor
GetBkMode
GetTextColor
CreateEllipticRgn
PathToRegion
EndPath
BeginPath
GetWindowOrgEx
GetViewportOrgEx
GetWindowExtEx
GetDIBits
RealizePalette
SelectPalette
CreatePalette
GetSystemPaletteEntries
CreateDIBitmap
DeleteObject
SelectClipRgn
CreatePolygonRgn
GetClipRgn
SetStretchBltMode
CreateRectRgnIndirect
SetBkColor
SetViewportOrgEx
SetMapMode
SetTextColor
SetROP2
SetPolyFillMode
SetBkMode
RestoreDC
SaveDC
GetViewportExtEx
PtVisible
RectVisible
TextOutA
ExtTextOutA
Escape
GetTextMetricsA
RoundRect
GetCurrentObject
DPtoLP
LPtoDP
Rectangle
Ellipse
CreateCompatibleDC
BitBlt
StartPage
StartDocA
DeleteDC
EndDoc
EndPage
GetObjectA
GetStockObject
CreateFontIndirectA
CreateSolidBrush
FillRgn
CreateRectRgn
CombineRgn
PatBlt
CreatePen
SelectObject
CreateBitmap
CreateDCA
CreateRoundRectRgn
StretchBlt
CreateCompatibleBitmap

winspool.drv

OpenPrinterA
DocumentPropertiesA
ClosePrinter

advapi32

RegQueryValueExA
RegOpenKeyExA
RegSetValueExA
RegCreateKeyA
RegQueryValueA
RegEnumValueA
RegCreateKeyExA
RegCloseKey

shell32

SHGetSpecialFolderPathA
ShellExecuteA
Shell_NotifyIconA

ole32

OleRun
CoCreateInstance
CLSIDFromString
OleUninitialize
OleInitialize
CLSIDFromProgID

oleaut32

UnRegisterTypeLi
LoadTypeLi
LHashValOfNameSys
RegisterTypeLi
SafeArrayPutElement
SafeArrayCreate
SafeArrayDestroy
SysAllocString
VariantInit
VariantCopyInd
SafeArrayGetElement
SafeArrayAccessData
SafeArrayUnaccessData
SafeArrayGetDim
SafeArrayGetLBound
SafeArrayGetUBound
VariantChangeType
VariantClear
VariantCopy

comctl32

ord17
ImageList_Destroy

wsock32

getservbyname

wininet

InternetCloseHandle

comdlg32

GetFileTitleA
GetSaveFileNameA
GetOpenFileNameA
ChooseFontA
ChooseColorA

Sections

.text
Size: 3.0MB - Virtual size: 3.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 11.2MB - Virtual size: 11.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 808KB - Virtual size: 1.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 28KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a35e088077bc2d0f8655c7df79417117

Headers

File Characteristics

Imports

winmm

ws2_32

rasapi32

kernel32

user32

gdi32

winspool.drv

advapi32

shell32

ole32

oleaut32

comctl32

wsock32

wininet

comdlg32

Sections

.text Size: 3.0MB - Virtual size: 3.0MB

.rdata Size: 11.2MB - Virtual size: 11.2MB

.data Size: 808KB - Virtual size: 1.2MB

.rsrc Size: 28KB - Virtual size: 24KB

.text
Size: 3.0MB - Virtual size: 3.0MB

.rdata
Size: 11.2MB - Virtual size: 11.2MB

.data
Size: 808KB - Virtual size: 1.2MB

.rsrc
Size: 28KB - Virtual size: 24KB