Behavioral task
behavioral1
Sample
2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk
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Size
13.7MB
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MD5
8d2ef4f6ad35f95ffbbb12f4b482631b
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SHA1
16b56befb0e23866b0fc55c7e0105f97b6c67094
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SHA256
c45332a8a375aed775e1f5399d74c318cd874efa9941ec7dab8ef9f0ec1997b4
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SHA512
4a44dd201b8c66c1e45632b545e5fac9ff8998ee01e59a8e51e87eafd106a8c6a147f10fef152ed4fb39bceb52e0074e37bd2cd35953f41f57986e46f7f86454
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SSDEEP
393216:R4nVzt+SC8d9vqZQCBBGStN3ZWqDzTGfb4:RyztlCl1TVtN3VP
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_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk
Files
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2024-06-07_8d2ef4f6ad35f95ffbbb12f4b482631b_ryuk.exe windows:5 windows x64 arch:x64
b0d2bcfaf69e32f6189b93d5e3f439ad
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
MessageBoxW
MessageBoxA
kernel32
GetModuleFileNameW
GetProcAddress
GetCommandLineW
GetEnvironmentVariableW
SetEnvironmentVariableW
ExpandEnvironmentStringsW
CreateDirectoryW
GetTempPathW
WaitForSingleObject
Sleep
SetDllDirectoryW
CreateProcessW
GetStartupInfoW
LoadLibraryExW
CloseHandle
GetCurrentProcess
LocalFree
FormatMessageW
LoadLibraryA
MultiByteToWideChar
WideCharToMultiByte
GetLastError
HeapReAlloc
SetEndOfFile
GetExitCodeProcess
GetCommandLineA
HeapSize
GetTimeZoneInformation
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
RaiseException
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
advapi32
ConvertSidToStringSidW
GetTokenInformation
OpenProcessToken
ConvertStringSecurityDescriptorToSecurityDescriptorW
ws2_32
ntohl
Sections
.text Size: 129KB - Virtual size: 129KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 62KB - Virtual size: 61KB
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: 68KB - Virtual size: 67KB
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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2.pyc
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modules.pyc