Behavioral task
behavioral1
Sample
2024-06-07_ccf28af40d78acf12f05894559150e70_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-07_ccf28af40d78acf12f05894559150e70_ryuk.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-07_ccf28af40d78acf12f05894559150e70_ryuk
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Size
11.9MB
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MD5
ccf28af40d78acf12f05894559150e70
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SHA1
8165f8862c491731cf1adeb9469ee5cdd7b9e650
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SHA256
cdf13eedd60a35d7ed8f74721e36c8f77505fc4da9ec6ae34c0f4e47f73c590d
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SHA512
5c5aa1e6d6540568b31b85d8c8d6d2e4ffaea8e211575a4ccdfccebae349a5ab95fce23d64aa18c14d407af83880e7f2a9cc071eb919ef42ac11fec85500e817
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SSDEEP
196608:ybOOqTXrTaXPA4pzxw9BK+gpvDq9onJ5hrZER5xQ3jo4U648RmU/3ZlsPvt7+sTa:HTXafVxw9BKpbq9c5hlER5xA26tN3ZWp
Malware Config
Signatures
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Detects Pyinstaller 1 IoCs
Processes:
resource yara_rule sample pyinstaller -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource 2024-06-07_ccf28af40d78acf12f05894559150e70_ryuk
Files
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2024-06-07_ccf28af40d78acf12f05894559150e70_ryuk.exe windows:5 windows x64 arch:x64
08c12a4e8a6a5e4388e0bc669ebc661c
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
HeapReAlloc
GetLastError
SetDllDirectoryW
GetModuleFileNameW
GetProcAddress
GetCommandLineW
GetEnvironmentVariableW
SetEnvironmentVariableW
ExpandEnvironmentStringsW
GetTempPathW
SetEndOfFile
Sleep
GetExitCodeProcess
CreateProcessW
GetStartupInfoW
LoadLibraryExW
CreateDirectoryW
FormatMessageW
LoadLibraryA
MultiByteToWideChar
WideCharToMultiByte
WaitForSingleObject
GetDriveTypeW
HeapSize
GetTimeZoneInformation
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetModuleHandleW
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetCommandLineA
ReadFile
CreateFileW
RaiseException
GetFileType
CloseHandle
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
ConvertStringSecurityDescriptorToSecurityDescriptorW
ws2_32
ntohl
Sections
.text Size: 129KB - Virtual size: 128KB
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: 115KB - Virtual size: 115KB
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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payload.pyc