notification_helper.exe.pdb
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-16_dcd3758de9d24aea79b8f48f7658d07f_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-16_dcd3758de9d24aea79b8f48f7658d07f_ryuk.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-16_dcd3758de9d24aea79b8f48f7658d07f_ryuk
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Size
1.8MB
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MD5
dcd3758de9d24aea79b8f48f7658d07f
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SHA1
a1bee0031b7c1a5e2cdcc0e034b1255d3d6e6a5d
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SHA256
8a379a8e60474f0c621b502079d7145a6064fe1ffa127af732232afd79d93ab0
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SHA512
40b4ae7f6c000d3d89864d8d5aea37f8726f92a433b4bb00826218718ad76f833bbd91131ab8b37bbb7d0e1fa5f8ce44905dfcae4af2a4d695c3f49d3e773edb
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SSDEEP
49152:DB1lVG+Yf/AWfvj+7dB6f9Ckt7c20+9qNxUW:D+f/AnOfEkKK90
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-16_dcd3758de9d24aea79b8f48f7658d07f_ryuk
Files
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2024-04-16_dcd3758de9d24aea79b8f48f7658d07f_ryuk.exe windows:5 windows x64 arch:x64
eb9dc118e4669afbc28dfd3958c7fe70
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
PDB Paths
Imports
api-ms-win-core-winrt-error-l1-1-0
RoOriginateError
kernel32
AcquireSRWLockExclusive
CloseHandle
CompareStringW
CreateDirectoryW
CreateEventW
CreateFileW
CreateNamedPipeW
CreateProcessW
CreateThread
DecodePointer
DeleteCriticalSection
DeleteFileW
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
ExitThread
ExpandEnvironmentStringsW
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsSetValue
FlushFileBuffers
FlushViewOfFile
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetComputerNameExW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableW
GetFileAttributesW
GetFileInformationByHandle
GetFileSizeEx
GetFileTime
GetFileType
GetFullPathNameW
GetLastError
GetLocalTime
GetLocaleInfoW
GetLongPathNameW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetNativeSystemInfo
GetOEMCP
GetProcAddress
GetProcessHeap
GetProcessId
GetProcessTimes
GetProductInfo
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDirectoryW
GetSystemInfo
GetSystemTimeAsFileTime
GetTempPathW
GetThreadId
GetThreadPriority
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
GetUserDefaultLangID
GetVersion
GetVersionExW
GetWindowsDirectoryW
HeapSetInformation
InitOnceExecuteOnce
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
IsWow64Process
K32QueryWorkingSetEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
LocalFree
LockFileEx
MoveFileW
MultiByteToWideChar
OpenProcess
OutputDebugStringW
PeekNamedPipe
PostQueuedCompletionStatus
QueryPerformanceCounter
QueryPerformanceFrequency
QueryThreadCycleTime
RaiseException
ReadConsoleW
ReadFile
ReleaseSRWLockExclusive
RemoveDirectoryW
ReplaceFileW
ResetEvent
RtlCaptureContext
RtlCaptureStackBackTrace
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetCurrentDirectoryW
SetEndOfFile
SetEnvironmentVariableW
SetErrorMode
SetEvent
SetFileAttributesW
SetFileInformationByHandle
SetFilePointerEx
SetLastError
SetNamedPipeHandleState
SetStdHandle
SetThreadPriority
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
SleepEx
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TransactNamedPipe
TryAcquireSRWLockExclusive
UnhandledExceptionFilter
UnlockFileEx
UnmapViewOfFile
UnregisterWaitEx
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WaitForSingleObject
WaitForSingleObjectEx
WaitNamedPipeW
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
lstrcmpW
lstrcmpiW
Exports
Exports
GetHandleVerifier
Sections
.text Size: 1.0MB - Virtual size: 1.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 180KB - Virtual size: 179KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 14KB - Virtual size: 50KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 35KB - Virtual size: 35KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 40B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 289B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
CPADinfo Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 244B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 572KB - Virtual size: 576KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE