Static task
static1
Behavioral task
behavioral1
Sample
2024-11-21_b4bb8eb96c15d1f370024c0fa700f5f3_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-21_b4bb8eb96c15d1f370024c0fa700f5f3_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-21_b4bb8eb96c15d1f370024c0fa700f5f3_ryuk
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Size
4.1MB
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MD5
b4bb8eb96c15d1f370024c0fa700f5f3
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SHA1
aeaca716e1e0edc6988899e5569422a31548f1bf
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SHA256
f4bd3afe930406d9c45c3b8c5fb5a62ae83fab7a04b26cec81859797fd359311
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SHA512
d745d0b181fa5d72c1255e24a352bc5a6ede6c1e9b32299f459439b8d097dd43d8627c885b79fed05d2e18564731cc1e2b9bcef6d2ceb52da849fdbccb2d1bd1
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SSDEEP
49152:/xGK0l3e3u+P0YY0+uOoCVlUsR5cdFRuc4UphfVuZ:/xGK09yurZ
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-11-21_b4bb8eb96c15d1f370024c0fa700f5f3_ryuk
Files
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2024-11-21_b4bb8eb96c15d1f370024c0fa700f5f3_ryuk.exe windows:6 windows x64 arch:x64
78c9da53bf2d072d61b49d02beb24690
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
user32
GetRawInputDeviceInfoW
GetRawInputDeviceList
kernel32
AcquireSRWLockExclusive
AreFileApisANSI
CloseHandle
CreateFileMappingW
CreateFileW
CreateProcessW
DecodePointer
DeleteCriticalSection
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetExitCodeProcess
GetFileAttributesExW
GetFileInformationByHandleEx
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemInfo
GetSystemTimeAsFileTime
GetThreadContext
GetUserDefaultLCID
GlobalAlloc
GlobalFree
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
K32EnumDeviceDrivers
K32GetDeviceDriverBaseNameW
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
LocalFree
MapViewOfFile
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ReadProcessMemory
ReleaseSRWLockExclusive
ResumeThread
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetFilePointerEx
SetLastError
SetStdHandle
SetThreadContext
SetUnhandledExceptionFilter
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
UnhandledExceptionFilter
UnmapViewOfFile
VirtualAlloc
VirtualAllocEx
VirtualFree
VirtualProtect
VirtualQuery
VirtualQueryEx
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
WriteProcessMemory
mpr
WNetCloseEnum
WNetEnumResourceA
WNetOpenEnumA
Sections
.text Size: 485KB - Virtual size: 485KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 3.5MB - Virtual size: 3.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 7KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 25KB - Virtual size: 25KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 140B
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 424B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ