2024-04-20_a1352bac6885e00182ed0b35ae939ca5_ryuk

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General

Target

2024-04-20_a1352bac6885e00182ed0b35ae939ca5_ryuk
Size

6.4MB
MD5

a1352bac6885e00182ed0b35ae939ca5
SHA1

676e3da5abf71507a08efabefd7e67c121e70398
SHA256

6f886bcd7cb576dcdb4d070c37e8a13070acc81660b085c6a609390dae55cead
SHA512

892d6f5a2051044aa01d06a0fdf7d8f544bd43d4c2426d4a93017e560d8ce4fe97343c69360217153fd3076adf949de52db247c0d84cc6ee41d9b094ac2bebb1
SSDEEP

98304:26VgRWvo884JQSA4H9J1JgAqhUp7DWFLOAkGkzdnEVomFHKnP:26OuQSA4HPTBF7DWFLOyomFHKnP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-20_a1352bac6885e00182ed0b35ae939ca5_ryuk

Files

2024-04-20_a1352bac6885e00182ed0b35ae939ca5_ryuk
.exe windows:6 windows x64 arch:x64

5194bfbead8ed08c05f399437a9dc558

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

C:\sandbox\shared\Libraries\Protection\x64\Release\LicenseManager.pdb

Imports

kernel32

GetLastError
GlobalAlloc
GlobalFree
GetComputerNameW
HeapFree
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
HeapSize
HeapReAlloc
RaiseException
HeapAlloc
DecodePointer
DeleteCriticalSection
GetProcessHeap
InitializeCriticalSectionAndSpinCount
CloseHandle
CreateFileW
WriteConsoleW
SetEnvironmentVariableW
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetOEMCP
IsValidCodePage
FindFirstFileExW
SetFilePointerEx
EnumSystemLocalesW
IsValidLocale
GetTimeFormatW
GetDateFormatW
GetConsoleCP
ReadConsoleW
SetConsoleMode
ReadConsoleInputA
GetConsoleMode
SetConsoleCtrlHandler
PeekNamedPipe
GetACP
FindResourceW
QueryPerformanceFrequency
VirtualQuery
VirtualAlloc
GetSystemInfo
HeapQueryInformation
FreeLibraryAndExitThread
ExitThread
SetStdHandle
GetFullPathNameA
GetCommandLineW
GetCommandLineA
RtlUnwindEx
RtlPcToFileHeader
FlushConsoleInputBuffer
GlobalMemoryStatus
ExpandEnvironmentStringsA
VerifyVersionInfoA
GetSystemDirectoryA
GetVolumeInformationA
TerminateThread
CreateThread
GetFileType
GetModuleHandleA
CreateMutexA
ReleaseMutex
SleepEx
GetTickCount64
LoadLibraryA
GetLogicalDriveStringsA
GetComputerNameA
CreateFileA
GetTempFileNameA
GetTempPathA
GetDriveTypeW
GetDriveTypeA
GetSystemTime
FormatMessageA
GetCPInfo
LCMapStringW
GetStringTypeW
LoadResource
LockResource
ExitProcess
MultiByteToWideChar
CreateTimerQueueTimer
WideCharToMultiByte
GetModuleFileNameW
DeleteFileW
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetCurrentProcessId
Sleep
IsDebuggerPresent
OutputDebugStringW
GetTimeZoneInformation
LoadLibraryW
SetUnhandledExceptionFilter
FreeLibrary
GetProcAddress
GetCurrentThreadId
GetCurrentProcess
GetFileTime
SetFileTime
SizeofResource
GetPrivateProfileStringW
GetShortPathNameW
GetLongPathNameW
CreateProcessW
WaitForSingleObject
FormatMessageW
LocalFree
GetCurrentDirectoryW
SetCurrentDirectoryW
AllocConsole
FreeConsole
GetStdHandle
CreateDirectoryW
GetCurrentThread
GetFileSize
GetVersionExW
GetFileAttributesW
GetEnvironmentVariableW
SetLastError
GetCurrentDirectoryA
GetModuleFileNameA
GetEnvironmentVariableA
RtlCaptureContext
SuspendThread
GetThreadContext
ResumeThread
ReadProcessMemory
GetVersionExA
OutputDebugStringA
GlobalSize
GlobalLock
GlobalUnlock
MulDiv
CopyFileW
LoadLibraryExW
GlobalDeleteAtom
lstrcmpA
lstrcmpW
CompareStringA
FreeResource
lstrcpyW
GetModuleHandleExW
CreateActCtxW
ActivateActCtx
DeactivateActCtx
FindActCtxSectionStringW
QueryActCtxW
GetModuleHandleW
GetPrivateProfileIntW
WritePrivateProfileStringW
SetEvent
CreateEventW
SetThreadPriority
GlobalAddAtomW
EncodePointer
GetSystemDirectoryW
GlobalFindAtomW
FindClose
FindFirstFileW
FlushFileBuffers
GetFullPathNameW
GetVolumeInformationW
LockFile
ReadFile
SetEndOfFile
SetFilePointer
UnlockFile
WriteFile
DuplicateHandle
lstrcmpiW
GetStringTypeExW
GetThreadLocale
FileTimeToLocalFileTime
FindNextFileW
InitializeCriticalSection
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GlobalReAlloc
GlobalHandle
LocalAlloc
LocalReAlloc
GlobalGetAtomNameW
SystemTimeToFileTime
CompareStringW
GetLocaleInfoW
GetSystemDefaultUILanguage
GetUserDefaultUILanguage
GlobalFlags
VerSetConditionMask
VerifyVersionInfoW
VirtualProtect
GetFileAttributesExW
GetFileSizeEx
SetErrorMode
GetTickCount
GetTempFileNameW
GetTempPathW
GetProfileIntW
SearchPathW
GetWindowsDirectoryW
FindResourceExW
GetUserDefaultLCID
ResetEvent
WaitForSingleObjectEx
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetSystemTimeAsFileTime
GetStartupInfoW
InitializeSListHead

user32

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

gdi32

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

msimg32

AlphaBlend
TransparentBlt

winspool.drv

OpenPrinterW
DocumentPropertiesW
ClosePrinter

advapi32

SystemFunction036
CryptEncrypt
CryptImportKey
CryptDestroyKey
CryptDestroyHash
CryptHashData
CryptCreateHash
CryptGetHashParam
CryptGenRandom
CryptReleaseContext
CryptAcquireContextA
ReportEventW
RegisterEventSourceW
DeregisterEventSource
RegQueryValueExA
RegOpenKeyExA
SetSecurityInfo
SetNamedSecurityInfoW
GetSecurityInfo
GetNamedSecurityInfoW
SetEntriesInAclA
FreeSid
AllocateAndInitializeSid
RegCloseKey
InitializeSecurityDescriptor
RegCreateKeyExW
RegOpenKeyExW
RegQueryValueExW
RegSetValueExW
RegEnumKeyExW
RegQueryValueW
RegEnumKeyW
RegDeleteValueW
GetUserNameA
RegEnumValueW
RegDeleteKeyW

shell32

SHGetMalloc
SHGetSpecialFolderLocation
SHGetPathFromIDListW
ShellExecuteW
SHBrowseForFolderW
SHGetDesktopFolder
DragFinish
DragQueryFileW
SHAppBarMessage
SHGetFileInfoW

comctl32

InitCommonControlsEx

shlwapi

PathFileExistsW
PathFindExtensionW
PathFindFileNameW
PathIsUNCW
PathStripToRootW
PathRemoveFileSpecW
StrFormatKBSizeW

uxtheme

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

ole32

IsAccelerator
OleTranslateAccelerator
OleDestroyMenuDescriptor
OleCreateMenuDescriptor
CoRegisterMessageFilter
CoRevokeClassObject
OleLockRunning
RevokeDragDrop
RegisterDragDrop
CoLockObjectExternal
OleGetClipboard
DoDragDrop
OleIsCurrentClipboard
OleFlushClipboard
OleUninitialize
OleInitialize
CoFreeUnusedLibraries
CreateStreamOnHGlobal
CreateILockBytesOnHGlobal
StgOpenStorageOnILockBytes
StgCreateDocfileOnILockBytes
CoGetClassObject
CoDisconnectObject
CoInitializeEx
CoInitialize
CoCreateInstance
CLSIDFromProgID
CLSIDFromString
CoCreateGuid
CoUninitialize
ReleaseStgMedium
OleDuplicateData
CoTaskMemFree
CoTaskMemAlloc

oleaut32

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

oledlg

OleUIBusyW

gdiplus

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

netapi32

NetStatisticsGet
NetApiBufferFree

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW
GetFileVersionInfoSizeA
GetFileVersionInfoA

crypt32

CertEnumCertificatesInStore
CertOpenSystemStoreA
CertFreeCertificateContext
CertCloseStore

winhttp

WinHttpGetProxyForUrl
WinHttpOpen
WinHttpGetIEProxyConfigForCurrentUser
WinHttpCloseHandle

ws2_32

WSACleanup
WSAGetLastError
__WSAFDIsSet
select
WSASetLastError
recv
send
bind
closesocket
connect
getpeername
WSAStartup
getsockopt
htons
ntohs
setsockopt
socket
WSAIoctl
getaddrinfo
freeaddrinfo
accept
listen
ioctlsocket
gethostname
htonl
ntohl
getsockname

oleacc

CreateStdAccessibleObject
AccessibleObjectFromWindow
LresultFromObject

imm32

ImmGetContext
ImmGetOpenStatus
ImmReleaseContext

winmm

PlaySoundW

Sections

.text
Size: 3.2MB - Virtual size: 3.2MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.1MB - Virtual size: 1.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 179KB - Virtual size: 239KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 181KB - Virtual size: 180KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 1024B - Virtual size: 720B

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: 1.6MB - Virtual size: 1.6MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 76KB - Virtual size: 76KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

5194bfbead8ed08c05f399437a9dc558

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

msimg32

winspool.drv

advapi32

shell32

comctl32

shlwapi

uxtheme

ole32

oleaut32

oledlg

gdiplus

netapi32

version

crypt32

winhttp

ws2_32

oleacc

imm32

winmm

Sections

.text Size: 3.2MB - Virtual size: 3.2MB

.rdata Size: 1.1MB - Virtual size: 1.1MB

.data Size: 179KB - Virtual size: 239KB

.pdata Size: 181KB - Virtual size: 180KB

.gfids Size: 1024B - Virtual size: 720B

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

.rsrc Size: 1.6MB - Virtual size: 1.6MB

.reloc Size: 76KB - Virtual size: 76KB

.text
Size: 3.2MB - Virtual size: 3.2MB

.rdata
Size: 1.1MB - Virtual size: 1.1MB

.data
Size: 179KB - Virtual size: 239KB

.pdata
Size: 181KB - Virtual size: 180KB

.gfids
Size: 1024B - Virtual size: 720B

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

.rsrc
Size: 1.6MB - Virtual size: 1.6MB

.reloc
Size: 76KB - Virtual size: 76KB