Static task
static1
Behavioral task
behavioral1
Sample
TWCU.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
TWCU.exe
Resource
win10v2004-20230915-en
General
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Target
TWCU.exe
-
Size
827KB
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MD5
393980f2e7c75a01de9cb76395cb4e33
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SHA1
dbc18af2202cb223f65adf788b1595e09f55fc1f
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SHA256
7c44cc0d7f2f26e87340eeeb0d6626d286e6d2a6926df71d2ab24a93ac6290fb
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SHA512
4174cfe9131e53ee5381ddaadb9e4b2ed0aee95c5cdcb7fe70ecff5fa968fdf6ab37edf6ddbe86a9d1820935b20bd877940a9957b1e349a80617394f99a47549
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SSDEEP
24576:qYhcbfOIFVgDAtkupaclUPQwP98jGYxZsNYc09hfj5rbL:0bfOIFVE4xKNS9VjlbL
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource TWCU.exe
Files
-
TWCU.exe.exe windows:5 windows x86
b9feaa08b210e4a81ef67b1edd75125c
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
ExitThread
RaiseException
RtlUnwind
HeapReAlloc
HeapSize
VirtualProtect
VirtualAlloc
VirtualQuery
GetStdHandle
GetModuleFileNameA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
SetHandleCount
GetFileType
GetStartupInfoA
HeapCreate
VirtualFree
QueryPerformanceCounter
GetSystemTimeAsFileTime
GetACP
GetOEMCP
IsDebuggerPresent
InitializeCriticalSectionAndSpinCount
LCMapStringW
GetTimeZoneInformation
GetConsoleCP
GetConsoleMode
LCMapStringA
GetStringTypeA
GetStringTypeW
GetLocaleInfoA
SetStdHandle
WriteConsoleA
GetConsoleOutputCP
WriteConsoleW
CreateFileA
SetEnvironmentVariableA
SetUnhandledExceptionFilter
UnhandledExceptionFilter
TerminateProcess
HeapFree
HeapAlloc
ExitProcess
GetStartupInfoW
GetTickCount
GetFileTime
GetFileSizeEx
FileTimeToLocalFileTime
SetErrorMode
TlsFree
DeleteCriticalSection
LocalReAlloc
TlsSetValue
TlsAlloc
InitializeCriticalSection
GlobalHandle
GlobalReAlloc
EnterCriticalSection
TlsGetValue
LeaveCriticalSection
LocalAlloc
InterlockedIncrement
GlobalFlags
GetCurrentThread
ConvertDefaultLocale
EnumResourceLanguagesW
lstrcmpA
GetLocaleInfoW
CompareStringA
InterlockedExchange
CreateFileW
GetFullPathNameW
GetVolumeInformationW
GetCurrentProcess
DuplicateHandle
GetFileSize
SetEndOfFile
UnlockFile
LockFile
FlushFileBuffers
SetFilePointer
WriteFile
ReadFile
GetThreadLocale
InterlockedDecrement
GetCurrentThreadId
GlobalAddAtomW
GlobalFindAtomW
GlobalDeleteAtom
CompareStringW
LoadLibraryA
lstrcmpW
GetVersionExA
FormatMessageW
LocalFree
lstrlenW
GetCurrentProcessId
GetModuleHandleA
GetDateFormatW
FileTimeToSystemTime
WritePrivateProfileStringW
GetSystemInfo
GetModuleHandleW
SetLastError
GetCPInfo
lstrlenA
GetVersionExW
GetVersion
GetPrivateProfileSectionNamesW
GetPrivateProfileStringW
GetPrivateProfileIntW
ResetEvent
FreeResource
ResumeThread
MulDiv
WideCharToMultiByte
lstrcpyW
GetCurrentDirectoryW
GetProcAddress
LoadLibraryW
GetFileAttributesW
WaitForSingleObjectEx
GetLastError
FreeLibrary
GlobalFree
GlobalUnlock
GlobalLock
GlobalAlloc
WaitForSingleObject
Sleep
MultiByteToWideChar
ReleaseMutex
CreateMutexW
GetModuleFileNameW
CloseHandle
CreateEventW
FindClose
CreateDirectoryW
FindFirstFileW
SetEvent
CreateThread
FindResourceW
LoadResource
LockResource
IsValidCodePage
SizeofResource
user32
PostThreadMessageW
GetForegroundWindow
DispatchMessageW
GetTopWindow
UnhookWindowsHookEx
GetMessageTime
PeekMessageW
MapWindowPoints
TrackPopupMenu
GetKeyState
SetMenu
CreateWindowExW
GetClassInfoExW
GetClassInfoW
RegisterClassW
AdjustWindowRectEx
EqualRect
GetScrollInfo
SetScrollInfo
GetDlgCtrlID
DefWindowProcW
CallWindowProcW
GetMenu
SetWindowPos
IntersectRect
SystemParametersInfoA
GetWindowPlacement
GetWindow
GetDesktopWindow
GetActiveWindow
CreateDialogIndirectParamW
DestroyWindow
GetDlgItem
GetNextDlgTabItem
EndDialog
GetWindowThreadProcessId
IsWindowEnabled
EndPaint
BeginPaint
GetWindowDC
ClientToScreen
GrayStringW
DrawTextExW
TabbedTextOutW
GetSubMenu
DeleteMenu
LoadBitmapW
GetSysColorBrush
CreatePopupMenu
CreateMenu
IsRectEmpty
ModifyMenuW
GetMenuItemCount
AppendMenuW
SystemParametersInfoW
DestroyIcon
DrawIconEx
DrawTextW
GetMenuItemInfoW
DrawEdge
OffsetRect
SetRect
LoadImageW
DestroyCursor
FillRect
DrawFocusRect
FrameRect
InflateRect
SetCursor
RedrawWindow
GetSysColor
GetPropW
GetLastActivePopup
ShowWindow
IsIconic
IsWindow
EnumWindows
MessageBoxW
SetWindowLongW
GetWindowLongW
ScreenToClient
GetMessagePos
CopyRect
GetClientRect
GetScrollPos
SetScrollPos
PostQuitMessage
SetActiveWindow
EnableMenuItem
SendMessageW
EnableWindow
GetWindowRect
GetParent
SetForegroundWindow
EndDeferWindowPos
BeginDeferWindowPos
DeferWindowPos
SetWindowRgn
SetPropW
LoadIconW
ReleaseCapture
PtInRect
GetCursorPos
UpdateWindow
InvalidateRect
GetFocus
IsWindowVisible
PostMessageW
KillTimer
RegisterClipboardFormatW
GetSystemMetrics
ReleaseDC
GetDC
MessageBeep
GetNextDlgGroupItem
SetCapture
GetMenuItemID
InvalidateRgn
SetTimer
CopyAcceleratorTableW
CharNextW
UnregisterClassW
LoadCursorW
DestroyMenu
SetWindowContextHelpId
MapDialogRect
CharUpperW
GetMessageW
TranslateMessage
ValidateRect
SetMenuItemBitmaps
GetMenuCheckMarkDimensions
CheckMenuItem
MoveWindow
SetWindowTextW
IsDialogMessageW
RegisterWindowMessageW
SendDlgItemMessageW
SendDlgItemMessageA
WinHelpW
IsChild
GetWindowTextW
SetWindowsHookExW
CallNextHookEx
GetClassLongW
GetClassNameW
RemovePropW
SetFocus
GetMenuState
GetWindowTextLengthW
GetCapture
gdi32
ExtTextOutW
Escape
SaveDC
RestoreDC
SetBkColor
SetBkMode
SetTextColor
SetMapMode
GetClipBox
LineTo
MoveToEx
SetTextAlign
GetViewportExtEx
GetWindowExtEx
TextOutW
SetViewportExtEx
ScaleViewportExtEx
SetWindowOrgEx
SetWindowExtEx
ScaleWindowExtEx
ExtSelectClipRgn
CreateBitmap
CreateRectRgnIndirect
GetMapMode
DPtoLP
GetBkColor
GetTextColor
GetRgnBox
RectVisible
PtVisible
PatBlt
CreateDIBSection
Ellipse
GetBkMode
CreatePen
Rectangle
SetViewportOrgEx
GetViewportOrgEx
CreateSolidBrush
DeleteObject
DeleteDC
SelectObject
CreateFontW
CreateRoundRectRgn
GetTextExtentPoint32W
GetTextMetricsW
CreateFontIndirectW
GetDeviceCaps
GetStockObject
GetObjectW
BitBlt
CreateCompatibleBitmap
OffsetViewportOrgEx
CreateCompatibleDC
comdlg32
GetFileTitleW
winspool.drv
DocumentPropertiesW
ClosePrinter
OpenPrinterW
advapi32
AllocateAndInitializeSid
CheckTokenMembership
FreeSid
RegQueryValueExW
RegOpenKeyW
RegOpenKeyExW
RegQueryValueW
RegEnumKeyW
RegDeleteKeyW
RegCreateKeyExW
RegSetValueExW
RegCloseKey
shell32
ShellExecuteExW
ShellExecuteW
Shell_NotifyIconW
SHGetSpecialFolderPathW
comctl32
InitCommonControlsEx
shlwapi
PathIsUNCW
PathFindExtensionW
PathFindFileNameW
PathStripToRootW
oledlg
OleUIBusyW
ole32
CoTaskMemAlloc
CoTaskMemFree
CreateStreamOnHGlobal
OleIsCurrentClipboard
CLSIDFromProgID
CLSIDFromString
CoGetClassObject
StgOpenStorageOnILockBytes
StgCreateDocfileOnILockBytes
CreateILockBytesOnHGlobal
OleUninitialize
CoFreeUnusedLibraries
OleInitialize
CoRevokeClassObject
OleFlushClipboard
CoRegisterMessageFilter
oleaut32
SysStringLen
OleLoadPicture
SysFreeString
VarDateFromStr
SysAllocStringLen
VariantClear
VariantChangeType
VariantInit
VariantCopy
SafeArrayDestroy
VariantTimeToSystemTime
SystemTimeToVariantTime
OleCreateFontIndirect
SysAllocString
gdiplus
GdiplusStartup
GdipCloneImage
GdipLoadImageFromStream
GdipDisposeImage
GdipAlloc
GdipFree
GdipGetImageHeight
GdipGetImageWidth
GdipDrawImageRectI
GdipDrawLine
GdipSetInterpolationMode
GdipDeleteGraphics
GdipCreateFromHDC
GdipDeletePen
GdipCreatePen1
GdiplusShutdown
crypt32
CertEnumCertificatesInStore
CertCloseStore
CertGetNameStringW
CertOpenSystemStoreW
CertGetCertificateContextProperty
Sections
.text Size: 582KB - Virtual size: 581KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 101KB - Virtual size: 101KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.data Size: 13KB - Virtual size: 40KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 75KB - Virtual size: 75KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 54KB - Virtual size: 54KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.oli Size: - Virtual size: 1B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE