Static task
static1
Behavioral task
behavioral1
Sample
2024-01-18_a20dca2c03e997527cc39b62475e3d10_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-01-18_a20dca2c03e997527cc39b62475e3d10_ryuk.exe
Resource
win10v2004-20231215-en
General
-
Target
2024-01-18_a20dca2c03e997527cc39b62475e3d10_ryuk
-
Size
4.1MB
-
MD5
a20dca2c03e997527cc39b62475e3d10
-
SHA1
1012152fb2bb4910ce301686689fde5bada18200
-
SHA256
83333a678e84207766fc774b40e3280938b280f8252ad33e6ddd7f39e15b36b3
-
SHA512
f7887a36fa62cc52efbb183dcf0707966da9c5b03f260243b2c4a67e9733ebf67e54083406b78afc56ad2477c40c58bb6898d097d52868dad26ac02f6bddc432
-
SSDEEP
49152:kpvfnmjbZLodhcMerZAppnAiimBOU+R+q26QJ8hxZ7ztlHcEB8WvEluwfzu5v/gl:0mxKYXvh5E7uVPm6e7
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-18_a20dca2c03e997527cc39b62475e3d10_ryuk
Files
-
2024-01-18_a20dca2c03e997527cc39b62475e3d10_ryuk.exe windows:6 windows x64 arch:x64
0d066ed1d22d9e2c52086444803fc92e
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
Imports
kernel32
CreateFileA
DeleteFileA
FindClose
FindFirstFileA
FindNextFileA
GetFileAttributesExA
GetFullPathNameA
RemoveDirectoryA
SetFileTime
CloseHandle
GetSystemTime
SystemTimeToFileTime
VirtualQuery
GlobalAlloc
GlobalLock
GlobalUnlock
GetLastError
SetErrorMode
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
GetCurrentProcess
GetCurrentProcessId
ExitProcess
CreateDirectoryA
CreateThread
OpenProcess
GetSystemInfo
CreateThreadpool
CloseThreadpool
CreateThreadpoolCleanupGroup
CloseThreadpoolCleanupGroup
CreateThreadpoolWork
SubmitThreadpoolWork
WaitForThreadpoolWorkCallbacks
CloseThreadpoolWork
GetModuleFileNameA
WaitForMultipleObjects
K32GetProcessMemoryInfo
InitializeConditionVariable
WakeAllConditionVariable
SleepConditionVariableCS
WriteConsoleW
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetOEMCP
GetCurrentDirectoryA
SetCurrentDirectoryA
TerminateProcess
GetTickCount
WideCharToMultiByte
QueryPerformanceCounter
QueryPerformanceFrequency
DuplicateHandle
WaitForSingleObjectEx
Sleep
GetCurrentThread
GetCurrentThreadId
MultiByteToWideChar
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
GetProcAddress
TryEnterCriticalSection
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
CreateTimerQueue
SetEvent
SignalObjectAndWait
SwitchToThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
RegisterWaitForSingleObject
UnregisterWait
GetThreadTimes
FreeLibrary
FreeLibraryAndExitThread
GetModuleFileNameW
GetModuleHandleA
LoadLibraryExW
ReleaseSemaphore
InitializeSListHead
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
LoadLibraryW
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
RaiseException
HeapAlloc
HeapFree
GetProcessHeap
RtlPcToFileHeader
RtlUnwindEx
GetModuleHandleExW
ReadFile
GetTimeZoneInformation
SetConsoleCtrlHandler
CreateFileW
GetFileType
SetFilePointerEx
HeapReAlloc
GetStdHandle
WriteFile
GetCommandLineA
GetCommandLineW
GetACP
GetConsoleMode
ReadConsoleW
GetConsoleCP
HeapSize
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
MoveFileExW
DeleteFileW
GetFileAttributesExW
SetStdHandle
SetEndOfFile
FindFirstFileExA
IsValidCodePage
user32
SetClipboardData
CloseClipboard
OpenClipboard
EmptyClipboard
shell32
SHGetFolderPathW
advapi32
AdjustTokenPrivileges
OpenProcessToken
LookupPrivilegeValueA
Sections
.text Size: 3.2MB - Virtual size: 3.2MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 741KB - Virtual size: 741KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 98KB - Virtual size: 395KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 112KB - Virtual size: 112KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 29B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 35KB - Virtual size: 34KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 12KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ