Static task
static1
Behavioral task
behavioral1
Sample
2024-01-27_a195e82d9dbebefa5193d3409ed61cd4_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-27_a195e82d9dbebefa5193d3409ed61cd4_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-27_a195e82d9dbebefa5193d3409ed61cd4_ryuk
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Size
891KB
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MD5
a195e82d9dbebefa5193d3409ed61cd4
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SHA1
0f85033f6ce4f3b8ed13544d4ee4854e2f7d48bb
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SHA256
14440bd25f10995a4892708e2acd889c1007a1afcbfae01066029e13d71ff827
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SHA512
e2dcff5f7bc4d54a3d16a1dcf391e4426e040dd3fcd441341251f721d6de10f4977f74a2fbdf7b7880c99affd7df436508dfa148d9abe0aba485753cadd23dde
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SSDEEP
24576:/1tL/bNIV/nNTno9PTlw+Ky97+3/ckvw:rL/4o9u+f97oUkv
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-27_a195e82d9dbebefa5193d3409ed61cd4_ryuk
Files
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2024-01-27_a195e82d9dbebefa5193d3409ed61cd4_ryuk.exe windows:6 windows x64 arch:x64
c8034f62adea2f53720f2d807132c5c1
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
QueryPerformanceFrequency
QueryPerformanceCounter
TlsGetValue
SwitchToThread
TlsAlloc
TlsSetValue
TlsFree
GetEnvironmentVariableA
GetLastError
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
GetCurrentThreadId
GetProcAddress
lstrcmpA
lstrcpynA
LoadLibraryA
SetErrorMode
FreeLibrary
GetModuleFileNameA
GetModuleHandleExA
GetCurrentProcess
GetCurrentThread
GetNativeSystemInfo
GetProcessAffinityMask
CloseHandle
SetEvent
WaitForSingleObjectEx
CreateEventExA
ResumeThread
WideCharToMultiByte
RtlPcToFileHeader
EncodePointer
DecodePointer
RaiseException
DeleteCriticalSection
MultiByteToWideChar
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
GetSystemTimeAsFileTime
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
ResetEvent
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcessId
RtlUnwindEx
InterlockedPushEntrySList
LoadLibraryExW
ExitProcess
GetModuleHandleExW
CreateThread
ExitThread
FreeLibraryAndExitThread
HeapAlloc
HeapFree
HeapReAlloc
GetStdHandle
WriteFile
GetCommandLineA
GetCommandLineW
GetACP
GetFileType
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
GetConsoleCP
GetConsoleMode
ReadFile
SetFilePointerEx
GetProcessHeap
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetStdHandle
WriteConsoleW
ReadConsoleW
CreateFileW
HeapSize
Sections
.text Size: 659KB - Virtual size: 659KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 175KB - Virtual size: 174KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 16KB - Virtual size: 29KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 31KB - Virtual size: 31KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 1024B - Virtual size: 536B
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: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ