Behavioral task
behavioral1
Sample
2024-06-07_5a1a560fc4f3783ec92bd5bc07cf590d_ryuk.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-07_5a1a560fc4f3783ec92bd5bc07cf590d_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-07_5a1a560fc4f3783ec92bd5bc07cf590d_ryuk
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Size
15.4MB
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MD5
5a1a560fc4f3783ec92bd5bc07cf590d
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SHA1
90e0fab26e720e51109387b9134e682805872bf5
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SHA256
c6b275a01b4db69a9164c9cba9fdba476ffed0296fee2325ce2713fa559194d6
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SHA512
73c69ad3a3371238c0341f897572434cf0b3540f87ff97656256a921179fac9e913d1f5487078ecc749d9a8fcae92645afa4705125ab724c8c5ffa7fb53f0aae
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SSDEEP
393216:9SaAhQQ93OCEDmlh2pHZk/RiEFbjRPRlIFtUWl:9SaAv93OCEDUQpHZk/Riajm4M
Malware Config
Signatures
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Detects Pyinstaller 1 IoCs
resource yara_rule sample pyinstaller -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-07_5a1a560fc4f3783ec92bd5bc07cf590d_ryuk
Files
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2024-06-07_5a1a560fc4f3783ec92bd5bc07cf590d_ryuk.exe windows:5 windows x64 arch:x64
bb2292057634957dfa559b6eef7b52d8
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
GetCommandLineW
GetEnvironmentVariableW
SetEnvironmentVariableW
ExpandEnvironmentStringsW
CreateDirectoryW
GetTempPathW
WaitForSingleObject
Sleep
GetExitCodeProcess
GetStartupInfoW
LoadLibraryExW
CloseHandle
GetCurrentProcess
LocalFree
FormatMessageW
LoadLibraryA
MultiByteToWideChar
WideCharToMultiByte
GetProcAddress
GetModuleFileNameW
SetDllDirectoryW
CreateProcessW
GetLastError
SetEndOfFile
HeapReAlloc
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetModuleHandleW
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetCommandLineA
ReadFile
CreateFileW
GetDriveTypeW
GetFileType
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetFullPathNameW
RemoveDirectoryW
FindClose
FindFirstFileExW
FindNextFileW
SetStdHandle
SetConsoleCtrlHandler
DeleteFileW
GetStdHandle
WriteFile
ExitProcess
GetModuleHandleExW
GetACP
HeapFree
HeapAlloc
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetConsoleCP
CompareStringW
LCMapStringW
GetCurrentDirectoryW
FlushFileBuffers
SetEnvironmentVariableA
GetFileAttributesExW
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetStringTypeW
GetProcessHeap
WriteConsoleW
GetTimeZoneInformation
HeapSize
RaiseException
advapi32
ConvertSidToStringSidW
GetTokenInformation
OpenProcessToken
ConvertStringSecurityDescriptorToSecurityDescriptorW
ws2_32
ntohl
Sections
.text Size: 132KB - Virtual size: 131KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 62KB - Virtual size: 62KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 44KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 7KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 172B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 128KB - Virtual size: 127KB
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
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rapid ubi src.pyc