Static task
static1
Behavioral task
behavioral1
Sample
2024-08-23_5137b8787bc9e97ecdd5b1d0de041561_cobalt-strike_ryuk.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-08-23_5137b8787bc9e97ecdd5b1d0de041561_cobalt-strike_ryuk.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-23_5137b8787bc9e97ecdd5b1d0de041561_cobalt-strike_ryuk
-
Size
6.7MB
-
MD5
5137b8787bc9e97ecdd5b1d0de041561
-
SHA1
253e48a11cfca2aabd300a7ec603adf7d9defc42
-
SHA256
8247abe7faf299f3456f1272b15024136403195d1989a85367923528ba6a3e67
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SHA512
7cda6a5a522788ac1d30b1899193e4088fd1d797e3e271864fb9674b4ee67df0ff6900d570c7c987ae0e89f6b77be454a41674b9334f42b30aee65225d18f4f1
-
SSDEEP
98304:KCoHkITJV3tJseJDaocQ17UpJzrX4yzWubPPBkWT:ZckuV3t+eJDaiM
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-08-23_5137b8787bc9e97ecdd5b1d0de041561_cobalt-strike_ryuk
Files
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2024-08-23_5137b8787bc9e97ecdd5b1d0de041561_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
dccaa9e5ddd24056ba9b313a3cf20a2c
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
python312
PyArg_ParseTuple
PyArg_ParseTupleAndKeywords
PyArg_UnpackTuple
PyAsyncGen_Type
PyBaseObject_Type
PyBool_Type
PyBuffer_Release
PyByteArray_FromObject
PyByteArray_FromStringAndSize
PyByteArray_Type
PyBytes_AsString
PyBytes_FromString
PyBytes_FromStringAndSize
PyBytes_Type
PyCFunction_Type
PyCMethod_New
PyCallIter_Type
PyCallable_Check
PyCapsule_New
PyCode_Addr2Line
PyCode_Type
PyComplex_FromDoubles
PyComplex_Type
PyConfig_SetArgv
PyConfig_SetString
PyCoro_Type
PyDescr_IsData
PyDict_DelItem
PyDict_DelItemString
PyDict_GetItem
PyDict_GetItemString
PyDict_Merge
PyDict_MergeFromSeq2
PyDict_New
PyDict_SetItem
PyDict_SetItemString
PyDict_Type
PyEllipsis_Type
PyErr_BadArgument
PyErr_ExceptionMatches
PyErr_Format
PyErr_NoMemory
PyErr_Print
PyErr_PrintEx
PyErr_SetFromErrno
PyErr_SetInterrupt
PyErr_WarnEx
PyErr_WriteUnraisable
PyEval_AcquireThread
PyEval_EvalCodeEx
PyEval_GetFuncName
PyEval_RestoreThread
PyEval_SaveThread
PyExc_AttributeError
PyExc_GeneratorExit
PyExc_ImportError
PyExc_ImportWarning
PyExc_IndexError
PyExc_KeyError
PyExc_NameError
PyExc_OverflowError
PyExc_RuntimeError
PyExc_StopAsyncIteration
PyExc_StopIteration
PyExc_SystemError
PyExc_TypeError
PyExc_UnboundLocalError
PyExc_ValueError
PyExc_ZeroDivisionError
PyException_GetContext
PyException_SetCause
PyException_SetContext
PyFloat_FromDouble
PyFloat_FromString
PyFloat_Type
PyFrame_GetBack
PyFrame_Type
PyFrozenSet_New
PyFrozenSet_Type
PyFunction_Type
PyGen_Type
PyImport_ExecCodeModule
PyImport_ExecCodeModuleEx
PyImport_FrozenModules
PyImport_GetModuleDict
PyImport_ImportFrozenModule
PyImport_ImportModule
PyIter_Next
PyIter_Send
PyList_Append
PyList_New
PyList_SetItem
PyList_Sort
PyList_Type
PyLong_AsLong
PyLong_AsLongAndOverflow
PyLong_AsSsize_t
PyLong_FromLong
PyLong_FromLongLong
PyLong_FromSsize_t
PyLong_FromString
PyLong_FromUnicodeObject
PyLong_FromUnsignedLongLong
PyLong_Type
PyMapping_Check
PyMapping_Size
PyMarshal_ReadObjectFromString
PyMem_Free
PyMem_GetAllocator
PyMem_Malloc
PyMem_Realloc
PyMethod_Type
PyModuleDef_Type
PyModule_ExecDef
PyModule_FromDefAndSpec2
PyModule_GetDef
PyModule_GetDict
PyModule_GetFilenameObject
PyModule_GetName
PyModule_NewObject
PyModule_Type
PyNumber_Add
PyNumber_AsSsize_t
PyNumber_Float
PyNumber_FloorDivide
PyNumber_InPlaceAdd
PyNumber_InPlaceLshift
PyNumber_InPlaceMultiply
PyNumber_InPlaceOr
PyNumber_Long
PyNumber_Negative
PyNumber_Subtract
PyNumber_ToBase
PyOS_snprintf
PyObject_Call
PyObject_CallFunction
PyObject_CallFunctionObjArgs
PyObject_CallMethodObjArgs
PyObject_CallObject
PyObject_ClearWeakRefs
PyObject_DelItem
PyObject_Free
PyObject_GC_Del
PyObject_GenericSetAttr
PyObject_GetAttr
PyObject_GetAttrString
PyObject_GetBuffer
PyObject_GetIter
PyObject_Init
PyObject_IsInstance
PyObject_IsSubclass
PyObject_IsTrue
PyObject_LengthHint
PyObject_Realloc
PyObject_Repr
PyObject_RichCompare
PyObject_RichCompareBool
PyObject_SelfIter
PyObject_SetAttr
PyObject_SetAttrString
PyObject_SetItem
PyObject_Str
PyRange_Type
PySeqIter_Type
PySequence_Check
PySequence_Contains
PySequence_InPlaceConcat
PySequence_List
PySet_Add
PySet_New
PySet_Type
PySlice_Type
PyStatus_Exception
PyStructSequence_InitType
PyStructSequence_New
PySys_GetObject
PySys_SetArgv
PySys_SetObject
PySys_WriteStderr
PyThreadState_Get
PyTraceBack_Type
PyTuple_New
PyTuple_Type
PyType_IsSubtype
PyType_Ready
PyType_Type
PyUnicode_AsUTF8
PyUnicode_AsWideCharString
PyUnicode_Concat
PyUnicode_DecodeUTF8
PyUnicode_FindChar
PyUnicode_Format
PyUnicode_FromEncodedObject
PyUnicode_FromFormat
PyUnicode_FromOrdinal
PyUnicode_FromString
PyUnicode_FromStringAndSize
PyUnicode_FromWideChar
PyUnicode_InternInPlace
PyUnicode_Join
PyUnicode_New
PyUnicode_RichCompare
PyUnicode_Substring
PyUnicode_Type
PyUnstable_Code_NewWithPosOnlyArgs
PyWideStringList_Append
Py_BuildValue
Py_BytesWarningFlag
Py_CompileStringExFlags
Py_DebugFlag
Py_DontWriteBytecodeFlag
Py_Exit
Py_ExitStatusException
Py_FileSystemDefaultEncoding
Py_FrozenFlag
Py_GenericAlias
Py_GenericAliasType
Py_HasFileSystemDefaultEncoding
Py_IgnoreEnvironmentFlag
Py_InitializeFromConfig
Py_InspectFlag
Py_InteractiveFlag
Py_MakePendingCalls
Py_NoSiteFlag
Py_NoUserSiteDirectory
Py_OptimizeFlag
Py_SetProgramName
Py_UTF8Mode
Py_VerboseFlag
_PyArg_NoKeywords
_PyAsyncGenWrappedValue_Type
_PyByteArray_empty_string
_PyBytes_Resize
_PyConfig_InitCompatConfig
_PyDict_MaybeUntrack
_PyDict_NewPresized
_PyErr_ChainStackItem
_PyErr_FormatFromCause
_PyErr_NormalizeException
_PyErr_WriteUnraisableMsg
_PyEval_EvalFrameDefault
_PyGen_FetchStopIterationValue
_PyImport_FixupExtensionObject
_PyLong_Copy
_PyLong_New
_PyObject_GC_Resize
_PyObject_LookupAttr
_PyObject_New
_PyRuntime
_PyRuntime_Initialize
_PySet_NextEntry
_PyThreadState_GetCurrent
_PyTuple_MaybeUntrack
_PyType_Lookup
_PyWarnings_Init
_PyWeakref_CallableProxyType
_PyWeakref_ClearRef
_PyWeakref_ProxyType
_PyWeakref_RefType
_Py_Dealloc
_Py_EllipsisObject
_Py_FalseStruct
_Py_NoneStruct
_Py_NotImplementedStruct
_Py_TrueStruct
shell32
SHGetFolderPathW
kernel32
CloseHandle
CompareStringW
CreateFileMappingW
CreateFileW
CreateThread
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FindResourceA
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetEnvironmentVariableA
GetEnvironmentVariableW
GetFileSize
GetFileSizeEx
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetShortPathNameW
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetTempPathW
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LoadResource
LockResource
MapViewOfFile
MultiByteToWideChar
OpenProcess
QueryPerformanceCounter
RaiseException
ReadFile
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetDllDirectoryW
SetEnvironmentVariableW
SetErrorMode
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
UnmapViewOfFile
VirtualProtect
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
Sections
.text Size: 930KB - Virtual size: 929KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 120KB - Virtual size: 120KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 227KB - Virtual size: 239KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 23KB - Virtual size: 22KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.fptable Size: 512B - Virtual size: 256B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 5.4MB - Virtual size: 5.4MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 53KB - Virtual size: 53KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ