Static task
static1
Behavioral task
behavioral1
Sample
2024-04-26_72b751c65c9512194fce8d7817aca7b3_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-26_72b751c65c9512194fce8d7817aca7b3_ryuk.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-26_72b751c65c9512194fce8d7817aca7b3_ryuk
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Size
83KB
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MD5
72b751c65c9512194fce8d7817aca7b3
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SHA1
4f999f4f70a3e58e143e6e45302808c0122216e2
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SHA256
314291d4b1ec6b99234866a94c807c7a58d0c6718faaa368cff4a29a3ae94c5c
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SHA512
b097f7b612d60a8fe0a3f7be27fbee859b3f7e8cc610e314a0d59e99a08ef81162b2eb3b5f9551217229393b14a41acb68cf9bacc219e8c1ca4cf1fef15bb0c9
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SSDEEP
1536:vd1Yq+Ey0Jr1J39/JAyFLuWbgZJnsW70dc9dlPjKWmMpc:vdx40JrrN/JAyVYJZeUNj7mM
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-26_72b751c65c9512194fce8d7817aca7b3_ryuk
Files
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2024-04-26_72b751c65c9512194fce8d7817aca7b3_ryuk.exe windows:6 windows x64 arch:x64
8237356e3fe33905bb29b457df8a2b3c
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
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
GetLastError
GetModuleFileNameW
RtlUnwindEx
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
GetStdHandle
WriteFile
MultiByteToWideChar
WideCharToMultiByte
ExitProcess
GetModuleHandleExW
GetACP
HeapFree
HeapAlloc
RtlLookupFunctionEntry
CloseHandle
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
LCMapStringW
SetStdHandle
GetFileType
GetStringTypeW
GetProcessHeap
HeapSize
HeapReAlloc
FlushFileBuffers
GetConsoleCP
GetConsoleMode
SetFilePointerEx
WriteConsoleW
CreateFileW
RaiseException
RtlCaptureContext
advapi32
SystemFunction036
Sections
.text Size: 39KB - Virtual size: 39KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 34KB - Virtual size: 33KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 168B
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: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ