2024-04-30_986253f545e2b4fe25c537b19f5bb95d_ryuk

Sharing

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General

Target

2024-04-30_986253f545e2b4fe25c537b19f5bb95d_ryuk
Size

2.7MB
MD5

986253f545e2b4fe25c537b19f5bb95d
SHA1

b3ff273bb520b4496cca7c0a0f6f3e5546b5dc0c
SHA256

b9039a9449b6ae1b43ad21a133938f18abfbc171065ba93c63f41ac8ee40baa1
SHA512

447b9f38cf999f458aa0d25681b0a343ca5222c3a0f1aeea0545125f5fcb44aaed3a097e74b95a9054c7ac7e538360b8cea68c5e971471bb368df27acf98a3bd
SSDEEP

49152:VPt4A0a9G2Ii/7iUxNJv+3i7RiuVeZCZLXT2bfIOnEv2OesY:BvNMZyiDIOnEv2Oes

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-30_986253f545e2b4fe25c537b19f5bb95d_ryuk

Files

2024-04-30_986253f545e2b4fe25c537b19f5bb95d_ryuk
.exe windows:5 windows x64 arch:x64

a122d758edd546919f88746065713acf

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

PDB Paths

F:\Projects\updatestar_src\OOUtBrowser\UStarRO64\VC8\x64\Unicode Static Release\UStarRO64.pdb

Imports

kernel32

GetConsoleMode
GetConsoleCP
GetTimeZoneInformation
GetStringTypeW
LCMapStringW
GetACP
ExitProcess
GetStdHandle
GetFileType
SetFilePointerEx
QueryPerformanceFrequency
VirtualQuery
VirtualAlloc
GetSystemInfo
HeapQueryInformation
FreeLibraryAndExitThread
ExitThread
CreateThread
GetCommandLineW
GetCommandLineA
RtlUnwindEx
RtlPcToFileHeader
OutputDebugStringW
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
GetStartupInfoW
IsDebuggerPresent
InitializeSListHead
GetSystemTimeAsFileTime
QueryPerformanceCounter
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
WaitForSingleObjectEx
ResetEvent
Sleep
SearchPathW
GetProfileIntW
GetTickCount
GetTempPathW
GetTempFileNameW
VerifyVersionInfoW
VerSetConditionMask
GetWindowsDirectoryW
FindResourceExW
lstrcpyW
VirtualProtect
SystemTimeToTzSpecificLocalTime
GetFileTime
GetFileSizeEx
GetFileAttributesExW
GetFileAttributesW
FileTimeToLocalFileTime
SetErrorMode
lstrcmpiW
GetCurrentProcess
DuplicateHandle
WriteFile
UnlockFile
SetFilePointer
SetEndOfFile
ReadFile
LockFile
GetVolumeInformationW
GetFullPathNameW
GetFileSize
FlushFileBuffers
FindFirstFileW
FindClose
CreateFileW
GlobalFindAtomW
FreeResource
FileTimeToSystemTime
GlobalGetAtomNameW
DeleteFileW
GlobalFlags
GetUserDefaultUILanguage
GetSystemDefaultUILanguage
GetLocaleInfoW
CompareStringW
GetCurrentDirectoryW
GetSystemDirectoryW
EncodePointer
LocalReAlloc
LocalAlloc
GlobalHandle
GlobalReAlloc
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
LeaveCriticalSection
EnterCriticalSection
InitializeCriticalSection
QueryActCtxW
FindActCtxSectionStringW
DeactivateActCtx
ActivateActCtx
CreateActCtxW
LoadLibraryW
GetModuleHandleExW
OutputDebugStringA
GetCurrentProcessId
GlobalAddAtomW
WritePrivateProfileStringW
GetPrivateProfileStringW
GetPrivateProfileIntW
GetProcAddress
GetModuleHandleW
ResumeThread
SetThreadPriority
CreateEventW
WaitForSingleObject
SetEvent
CloseHandle
CompareStringA
WideCharToMultiByte
MultiByteToWideChar
lstrcmpW
lstrcmpA
GlobalDeleteAtom
LoadLibraryExW
GetModuleFileNameW
FreeLibrary
GetCurrentThreadId
GetCurrentThread
SetLastError
CopyFileW
FormatMessageW
MulDiv
LocalFree
GlobalFree
GlobalUnlock
GlobalLock
GlobalSize
GlobalAlloc
GetVersionExW
GetProcessHeap
DeleteCriticalSection
DecodePointer
HeapAlloc
RaiseException
HeapReAlloc
GetLastError
SizeofResource
HeapSize
InitializeCriticalSectionAndSpinCount
HeapFree
FindResourceW
LoadResource
LockResource
SetStdHandle
WriteConsoleW

user32

EnableScrollBar
MessageBeep
GetIconInfo
DrawIconEx
IsRectEmpty
DrawFocusRect
WindowFromPoint
ReleaseCapture
SetCapture
GetNextDlgGroupItem
LoadImageW
TrackMouseEvent
MapDialogRect
GetAsyncKeyState
GetNextDlgTabItem
EndDialog
CreateDialogIndirectParamW
OffsetRect
SetRectEmpty
SendDlgItemMessageA
IntersectRect
InflateRect
GetMenuItemInfoW
DestroyMenu
CharUpperW
DestroyIcon
IsDialogMessageW
CheckDlgButton
MoveWindow
ShowWindow
GetMonitorInfoW
MonitorFromWindow
WinHelpW
GetScrollInfo
SetScrollInfo
LoadIconW
GetTopWindow
GetClassLongPtrW
SetWindowLongPtrW
GetWindowLongPtrW
SetWindowLongW
EqualRect
CopyRect
MapWindowPoints
AdjustWindowRectEx
RemovePropW
GetPropW
SetPropW
ShowScrollBar
GetScrollRange
SetScrollRange
GetScrollPos
SetScrollPos
ScrollWindow
RedrawWindow
SetForegroundWindow
GetForegroundWindow
SetActiveWindow
TrackPopupMenu
SetMenu
GetMenu
GetCapture
SetFocus
GetDlgItem
IsIconic
EndDeferWindowPos
DeferWindowPos
BeginDeferWindowPos
SetWindowPlacement
GetWindowPlacement
SetWindowPos
DestroyWindow
IsChild
IsMenu
IsWindow
CreateWindowExW
GetClassInfoExW
GetClassInfoW
RegisterClassW
CallWindowProcW
DefWindowProcW
GetMessageTime
GetMessagePos
RegisterWindowMessageW
GetWindowTextLengthW
FillRect
ScreenToClient
EndPaint
BeginPaint
GetWindowDC
TabbedTextOutW
GrayStringW
DrawTextExW
DrawTextW
InvalidateRect
HideCaret
InvertRect
NotifyWinEvent
UnregisterClassW
GetMenuStringW
GetMenuState
GetSubMenu
GetMenuItemID
UpdateWindow
KillTimer
SetTimer
RealChildWindowFromPoint
GetWindow
GetClassNameW
GetDesktopWindow
PtInRect
ClientToScreen
GetWindowRect
GetWindowTextW
SetWindowTextW
GetDlgCtrlID
DeleteMenu
SystemParametersInfoW
CreatePopupMenu
GetMenuDefaultItem
MapVirtualKeyW
GetKeyNameTextW
LoadMenuW
SetLayeredWindowAttributes
EnumDisplayMonitors
SetClassLongPtrW
SetWindowRgn
SetParent
OpenClipboard
CloseClipboard
SetClipboardData
EmptyClipboard
DrawStateW
DrawEdge
DrawFrameControl
IsZoomed
GetSystemMenu
BringWindowToTop
SetCursorPos
CopyIcon
GetMenuItemCount
InsertMenuW
AppendMenuW
RemoveMenu
PostMessageW
PostQuitMessage
SendMessageW
GetFocus
CheckMenuItem
EnableMenuItem
SetMenuItemBitmaps
GetMenuCheckMarkDimensions
SetMenuItemInfoW
GetParent
LoadBitmapW
GetMessageW
TranslateMessage
DispatchMessageW
PeekMessageW
IsWindowVisible
GetActiveWindow
GetKeyState
ValidateRect
GetCursorPos
SetWindowsHookExW
CallNextHookEx
ShowOwnedPopups
SetCursor
EnableWindow
IsWindowEnabled
MessageBoxW
GetWindowLongW
GetWindowThreadProcessId
GetComboBoxInfo
GetLastActivePopup
UnhookWindowsHookEx
GetSystemMetrics
GetDC
ReleaseDC
GetSysColor
GetSysColorBrush
LoadCursorW
GetClientRect
CopyImage
PostThreadMessageW
WaitMessage
GetKeyboardLayout
IsCharLowerW
MapVirtualKeyExW
ToUnicodeEx
GetKeyboardState
CreateAcceleratorTableW
DestroyAcceleratorTable
CopyAcceleratorTableW
SetRect
LockWindowUpdate
SetMenuDefaultItem
GetDoubleClickTime
ModifyMenuW
RegisterClipboardFormatW
CharUpperBuffW
IsClipboardFormatAvailable
GetUpdateRect
DrawMenuBar
DefFrameProcW
DefMDIChildProcW
TranslateMDISysAccel
SubtractRect
CreateMenu
GetWindowRgn
DestroyCursor
ReuseDDElParam
UnpackDDElParam
InsertMenuItemW
TranslateAcceleratorW
LoadAcceleratorsW
MonitorFromPoint
UpdateLayeredWindow
UnionRect
DrawIcon
FrameRect

gdi32

GetClipBox
GetObjectType
GetPixel
GetStockObject
GetViewportExtEx
GetWindowExtEx
IntersectClipRect
LineTo
PtVisible
RectVisible
RestoreDC
SaveDC
SelectClipRgn
ExtSelectClipRgn
SelectObject
SelectPalette
SetBkColor
SetBkMode
SetMapMode
SetLayout
GetLayout
SetPolyFillMode
SetROP2
SetTextColor
SetTextAlign
GetObjectW
MoveToEx
TextOutW
ExtTextOutW
SetViewportExtEx
SetViewportOrgEx
SetWindowExtEx
SetWindowOrgEx
OffsetViewportOrgEx
OffsetWindowOrgEx
ScaleViewportExtEx
ScaleWindowExtEx
CreateFontIndirectW
GetTextExtentPoint32W
CombineRgn
ExcludeClipRect
PatBlt
SetRectRgn
DPtoLP
GetTextMetricsW
EnumFontFamiliesExW
CreatePalette
GetNearestPaletteIndex
GetPaletteEntries
GetSystemPaletteEntries
RealizePalette
GetBkColor
CreateCompatibleBitmap
CreateDIBitmap
EnumFontFamiliesW
GetTextCharsetInfo
SetPixel
StretchBlt
CreateDIBSection
SetDIBColorTable
CreateEllipticRgn
Ellipse
GetTextColor
CreatePolygonRgn
Polygon
Polyline
CreateRoundRectRgn
LPtoDP
Rectangle
GetRgnBox
OffsetRgn
RoundRect
FillRgn
FrameRgn
GetBoundsRect
PtInRegion
ExtFloodFill
SetPaletteEntries
SetPixelV
GetWindowOrgEx
GetViewportOrgEx
GetTextFaceW
Escape
DeleteDC
CreateSolidBrush
CreateRectRgn
CreatePatternBrush
CreatePen
CreateHatchBrush
CreateCompatibleDC
BitBlt
DeleteObject
CreateBitmap
GetDeviceCaps
CreateDCW
CreateRectRgnIndirect
CopyMetaFileW

msimg32

TransparentBlt
AlphaBlend

winspool.drv

ClosePrinter
OpenPrinterW
DocumentPropertiesW

advapi32

RegEnumKeyExW
RegEnumValueW
RegQueryValueW
RegEnumKeyW
RegDeleteValueW
RegDeleteKeyW
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
RegSetValueExW
RegCreateKeyExW

shell32

ShellExecuteExW
SHGetFileInfoW
ShellExecuteW
SHAppBarMessage
SHBrowseForFolderW
DragFinish
DragQueryFileW
SHGetDesktopFolder
SHGetSpecialFolderLocation
SHGetPathFromIDListW

shlwapi

PathFindFileNameW
PathIsUNCW
PathStripToRootW
StrFormatKBSizeW
PathRemoveFileSpecW
PathFindExtensionW

uxtheme

GetCurrentThemeName
GetThemeSysColor
DrawThemeText
DrawThemeParentBackground
OpenThemeData
CloseThemeData
DrawThemeBackground
GetThemeColor
IsThemeBackgroundPartiallyTransparent
GetWindowTheme
IsAppThemed
GetThemePartSize

ole32

OleLockRunning
OleCreateMenuDescriptor
OleDestroyMenuDescriptor
OleTranslateAccelerator
IsAccelerator
RevokeDragDrop
RegisterDragDrop
CoLockObjectExternal
OleGetClipboard
DoDragDrop
CreateStreamOnHGlobal
CoDisconnectObject
CoInitialize
CoCreateInstance
CoCreateGuid
CoUninitialize
ReleaseStgMedium
OleDuplicateData
CoTaskMemFree
CoTaskMemAlloc
CoInitializeEx

oleaut32

VarBstrFromDate
VariantChangeType
VariantCopy
VariantClear
VariantTimeToSystemTime
VariantInit
SysStringLen
SysAllocStringLen
LoadTypeLi
SysFreeString
SysAllocString
SystemTimeToVariantTime

oleacc

LresultFromObject
AccessibleObjectFromWindow
CreateStdAccessibleObject

gdiplus

GdipSetInterpolationMode
GdipCreateFromHDC
GdipDrawImageRectI
GdipDrawImageI
GdipDeleteGraphics
GdipBitmapUnlockBits
GdipBitmapLockBits
GdipCreateBitmapFromScan0
GdipCreateBitmapFromStream
GdipGetImagePaletteSize
GdipGetImagePalette
GdipGetImagePixelFormat
GdipGetImageHeight
GdipGetImageWidth
GdipGetImageGraphicsContext
GdipDisposeImage
GdipCloneImage
GdiplusStartup
GdipFree
GdipAlloc
GdiplusShutdown
GdipCreateBitmapFromHBITMAP

imm32

ImmGetContext
ImmGetOpenStatus
ImmReleaseContext

winmm

PlaySoundW

Sections

.text
Size: 1.8MB - Virtual size: 1.8MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 626KB - Virtual size: 626KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 28KB - Virtual size: 72KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 84KB - Virtual size: 83KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 104KB - Virtual size: 103KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.giats
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 58KB - Virtual size: 58KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a122d758edd546919f88746065713acf

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

msimg32

winspool.drv

advapi32

shell32

shlwapi

uxtheme

ole32

oleaut32

oleacc

gdiplus

imm32

winmm

Sections

.text Size: 1.8MB - Virtual size: 1.8MB

.rdata Size: 626KB - Virtual size: 626KB

.data Size: 28KB - Virtual size: 72KB

.pdata Size: 84KB - Virtual size: 83KB

.gfids Size: 104KB - Virtual size: 103KB

.giats Size: 512B - Virtual size: 16B

.tls Size: 512B - Virtual size: 9B

.rsrc Size: 17KB - Virtual size: 16KB

.reloc Size: 58KB - Virtual size: 58KB

.text
Size: 1.8MB - Virtual size: 1.8MB

.rdata
Size: 626KB - Virtual size: 626KB

.data
Size: 28KB - Virtual size: 72KB

.pdata
Size: 84KB - Virtual size: 83KB

.gfids
Size: 104KB - Virtual size: 103KB

.giats
Size: 512B - Virtual size: 16B

.tls
Size: 512B - Virtual size: 9B

.rsrc
Size: 17KB - Virtual size: 16KB

.reloc
Size: 58KB - Virtual size: 58KB