WindowsUpdate[.]exe

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General

Target

WindowsUpdate.exe
Size

8.0MB
MD5

02d503a66b5a20b4acb4e37f086e5465
SHA1

3166b512bf5b2de7e5f980cd879f3f3e908491d2
SHA256

f50a94308878d4025b5eed4947310cc2c3518255ef492b81b9a11e574fc9c45b
SHA512

f1e6f9137a9da7802ee2f7bf0ed7a9babc5c52ab9827107db06a5c1697a76016043562274fc5a710c3e4ec0b4bc62e6911d075813441b451e84045bbd1ac7b7d
SSDEEP

196608:emY+2peGqgTojWtVM3420CazR2OWfCyk1GaPS5/GJd8VjljJm162PZ:UhnTojWtVM34eazRSCyk1GaPSAjEjljI

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
WindowsUpdate.exe

Files

WindowsUpdate.exe
.exe windows:5 windows x86 arch:x86

230363beee3a16b40f8fefab5ba42a93

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

InitializeCriticalSection
TlsAlloc
TlsSetValue
LocalReAlloc
DeleteCriticalSection
TlsFree
GetModuleHandleW
SetErrorMode
WritePrivateProfileStringA
GlobalFlags
GetCPInfo
GetOEMCP
GetSystemTimeAsFileTime
RtlUnwind
Sleep
ExitProcess
HeapFree
HeapAlloc
RaiseException
HeapReAlloc
SetEnvironmentVariableA
SetCurrentDirectoryA
GetCommandLineA
GetStartupInfoA
VirtualAlloc
HeapSize
GetACP
IsValidCodePage
TerminateProcess
GlobalHandle
SetUnhandledExceptionFilter
IsDebuggerPresent
GetTimeZoneInformation
LCMapStringA
LCMapStringW
GetStdHandle
InitializeCriticalSectionAndSpinCount
SetHandleCount
GetFileType
GetConsoleCP
GetConsoleMode
HeapCreate
VirtualFree
CompareStringW
SetStdHandle
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
GetTickCount
GetStringTypeA
GetStringTypeW
WriteConsoleA
GetConsoleOutputCP
WriteConsoleW
GetProcessHeap
GlobalReAlloc
EnterCriticalSection
TlsGetValue
LeaveCriticalSection
LocalAlloc
GetFileTime
GetFileSizeEx
SetFileTime
SystemTimeToFileTime
LocalFileTimeToFileTime
GlobalGetAtomNameA
GlobalFindAtomA
lstrcmpW
GetVersionExA
GetCurrentProcessId
GlobalAddAtomA
FreeResource
GlobalDeleteAtom
GetCurrentThread
GetCurrentThreadId
ConvertDefaultLocale
EnumResourceLanguagesA
GetLocaleInfoA
LoadLibraryExA
CompareStringA
GetCurrentProcess
DuplicateHandle
SetEndOfFile
UnlockFile
LockFile
FlushFileBuffers
WriteFile
LoadLibraryA
lstrcmpA
FreeLibrary
InterlockedDecrement
GetModuleFileNameW
GetModuleHandleA
GetProcAddress
GlobalFree
GlobalAlloc
GlobalLock
GlobalUnlock
MultiByteToWideChar
MulDiv
SetLastError
SetVolumeLabelA
GetCurrentDirectoryA
GetDiskFreeSpaceA
GetDriveTypeA
MoveFileA
CreateDirectoryA
GetFileSize
FormatMessageA
LocalFree
UnmapViewOfFile
CreateFileMappingA
MapViewOfFile
GetTempPathA
GetModuleFileNameA
lstrlenA
lstrcpyA
CreateProcessA
GetLastError
GetExitCodeProcess
SetFileAttributesA
DeleteFileA
RemoveDirectoryA
GetFileAttributesA
GetFullPathNameA
GetVolumeInformationA
InterlockedIncrement
FindNextFileA
FindFirstFileA
FindClose
FileTimeToLocalFileTime
FileTimeToSystemTime
CreateFileA
SetFilePointer
ReadFile
InterlockedExchange
CloseHandle
WideCharToMultiByte
FindResourceA
LoadResource
LockResource
UnhandledExceptionFilter
SizeofResource

user32

UnregisterClassA
GetSysColorBrush
EndPaint
BeginPaint
ClientToScreen
GrayStringA
DrawTextExA
DrawTextA
TabbedTextOutA
RegisterWindowMessageA
WinHelpA
GetCapture
GetClassLongA
GetClassNameA
SetPropA
GetPropA
RemovePropA
GetForegroundWindow
GetTopWindow
GetMessageTime
GetMessagePos
MapWindowPoints
SetMenu
SetForegroundWindow
UpdateWindow
CreateWindowExA
GetClassInfoExA
GetClassInfoA
RegisterClassA
GetSysColor
PtInRect
DefWindowProcA
CallWindowProcA
GetMenu
SystemParametersInfoA
GetWindowPlacement
GetWindowRect
GetWindowThreadProcessId
GetLastActivePopup
SetWindowsHookExA
CallNextHookEx
GetMessageA
IsWindowVisible
GetKeyState
GetCursorPos
ValidateRect
SetMenuItemBitmaps
GetMenuCheckMarkDimensions
LoadBitmapA
ModifyMenuA
EnableMenuItem
CheckMenuItem
ReleaseDC
GetDC
CopyRect
GetDesktopWindow
GetActiveWindow
SetActiveWindow
CreateDialogIndirectParamA
DestroyWindow
GetNextDlgTabItem
EndDialog
GetWindowTextA
PostQuitMessage
PeekMessageA
IsWindow
CharUpperA
GetFocus
GetParent
SetWindowPos
SetFocus
IsWindowEnabled
ShowWindow
SetWindowLongA
GetDlgCtrlID
SetWindowTextA
GetWindowLongA
IsDialogMessageA
DestroyMenu
AdjustWindowRectEx
SendMessageA
DrawIcon
PostMessageA
IsIconic
GetClientRect
LoadCursorA
LoadIconA
EnableWindow
GetSystemMetrics
SetCursor
DispatchMessageA
TranslateMessage
MsgWaitForMultipleObjects
wsprintfA
MessageBoxA
OemToCharBuffA
CharToOemBuffA
GetSubMenu
GetMenuItemCount
SendDlgItemMessageA
GetDlgItem
GetWindow
UnhookWindowsHookEx
GetMenuState
GetMenuItemID

gdi32

DeleteDC
GetStockObject
SetWindowExtEx
ScaleWindowExtEx
ScaleViewportExtEx
SetViewportExtEx
OffsetViewportOrgEx
SetViewportOrgEx
SelectObject
Escape
ExtTextOutA
TextOutA
RectVisible
GetDeviceCaps
DeleteObject
SetMapMode
RestoreDC
SaveDC
GetObjectA
SetBkColor
SetTextColor
GetClipBox
CreateBitmap
PtVisible

comdlg32

GetFileTitleA

winspool.drv

DocumentPropertiesA
OpenPrinterA
ClosePrinter

advapi32

RegSetValueExA
RegCreateKeyExA
RegQueryValueA
RegEnumKeyA
RegDeleteKeyA
RegOpenKeyExA
RegOpenKeyA
RegQueryValueExA
RegCloseKey

shell32

SHFileOperationA

shlwapi

PathIsUNCA
PathFindFileNameA
PathFindExtensionA
PathStripToRootA

oleaut32

VariantClear
VariantChangeType
VariantInit

Sections

.text
Size: 253KB - Virtual size: 253KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 50KB - Virtual size: 50KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 15KB - Virtual size: 30KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 145KB - Virtual size: 145KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

230363beee3a16b40f8fefab5ba42a93

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

comdlg32

winspool.drv

advapi32

shell32

shlwapi

oleaut32

Sections

.text Size: 253KB - Virtual size: 253KB

.rdata Size: 50KB - Virtual size: 50KB

.data Size: 15KB - Virtual size: 30KB

.rsrc Size: 145KB - Virtual size: 145KB

.text
Size: 253KB - Virtual size: 253KB

.rdata
Size: 50KB - Virtual size: 50KB

.data
Size: 15KB - Virtual size: 30KB

.rsrc
Size: 145KB - Virtual size: 145KB