Static task
static1
Behavioral task
behavioral1
Sample
2024-01-11_8f24afcee8c4d0361f6f05734c73cac7_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-11_8f24afcee8c4d0361f6f05734c73cac7_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-11_8f24afcee8c4d0361f6f05734c73cac7_ryuk
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Size
19.5MB
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MD5
8f24afcee8c4d0361f6f05734c73cac7
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SHA1
502d728597a0f5bfbccbe3f28beffdac9d7f014f
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SHA256
af61ba33a7c12fc203ea89988529bc8a851ea072f205b63c77481c4e2e6176a7
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SHA512
71997e97eb23bde14a816cceb5191da6a7c3213a7204b66080d1d0361b62474f1a5027a091e1f5ba5bde547ebce3b91f3409d1a9493793501ac70007e37ed5f1
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SSDEEP
393216:DMR1RRpxAmu1AH0jopQfQgjDcpknCPRpxGxf67LHoYOyGW99yHoL7sowY:oR1pyyHwfyposbxBH9yH6bf
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-11_8f24afcee8c4d0361f6f05734c73cac7_ryuk
Files
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2024-01-11_8f24afcee8c4d0361f6f05734c73cac7_ryuk.exe windows:6 windows x64 arch:x64
fbaa43e0802a7b3825c4b3d80b397682
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
version
VerQueryValueW
GetFileVersionInfoW
GetFileVersionInfoSizeW
kernel32
HeapReAlloc
HeapSize
GetModuleHandleA
GetProcAddress
GetCurrentProcess
GetSystemInfo
GetVersionExA
FindFirstFileA
FindNextFileA
FindClose
Sleep
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
GetLastError
GetModuleFileNameW
RtlUnwindEx
RtlPcToFileHeader
RaiseException
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
ExitProcess
GetModuleHandleExW
CreateFileW
GetFileType
CloseHandle
GetDriveTypeW
GetFullPathNameW
GetFullPathNameA
MultiByteToWideChar
WideCharToMultiByte
ReadFile
GetConsoleMode
ReadConsoleW
WriteFile
GetConsoleCP
SetFilePointerEx
SetEnvironmentVariableA
SetEnvironmentVariableW
SetCurrentDirectoryA
GetCurrentDirectoryA
GetCurrentDirectoryW
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetStdHandle
GetModuleFileNameA
GetCommandLineA
GetCommandLineW
GetACP
HeapFree
HeapAlloc
GetStringTypeW
CompareStringW
LCMapStringW
SetStdHandle
SetEndOfFile
GetTimeZoneInformation
WriteConsoleW
DeleteFileW
RemoveDirectoryW
WaitForSingleObject
GetExitCodeProcess
CreateProcessA
GetFileAttributesExW
FindFirstFileExA
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetProcessHeap
FlushFileBuffers
advapi32
SystemFunction036
Sections
.text Size: 107KB - Virtual size: 106KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 46KB - Virtual size: 46KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 200B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 648B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ