Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_52abcf14896481e70f79f348e27a05b8_cobalt-strike_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-18_52abcf14896481e70f79f348e27a05b8_cobalt-strike_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_52abcf14896481e70f79f348e27a05b8_cobalt-strike_ryuk
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Size
917KB
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MD5
52abcf14896481e70f79f348e27a05b8
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SHA1
aef6cb584b599ddc01774ffd47ae8749e856bdd1
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SHA256
1884f421ed11f89172e7db4bdbd54866c94007cc9bd65e8dc0af56b9b2fa082a
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SHA512
2046ac5150b9aaf43963fd180a6a6f5625fb623194d000708f2907b86388bafcc1d017693b5da3f1c8c1de19ce1eb72b075d8a2987ef21018bb7ef45db79dca2
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SSDEEP
24576:iP2cyel52ZKyF/08UR1j3NKtgQrjp8Bx:g2cyelwMyGhRFNLgjpa
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-18_52abcf14896481e70f79f348e27a05b8_cobalt-strike_ryuk
Files
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2024-02-18_52abcf14896481e70f79f348e27a05b8_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
0d2acced2557efa5ad57b1a6b6ae1530
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
ws2_32
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAGetLastError
WSAStartup
accept
bind
closesocket
connect
freeaddrinfo
getaddrinfo
ioctlsocket
listen
recv
sendto
setsockopt
shutdown
socket
kernel32
ChangeTimerQueueTimer
CloseHandle
CompareStringW
CreateEventA
CreateEventW
CreateFileMappingA
CreateFileW
CreateThread
CreateTimerQueue
CreateTimerQueueTimer
DecodePointer
DeleteCriticalSection
DeleteFileW
DeleteTimerQueueTimer
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetEnvironmentStringsW
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoW
GetLogicalProcessorInformation
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetNumaHighestNodeNumber
GetOEMCP
GetProcAddress
GetProcessAffinityMask
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetThreadPriority
GetThreadTimes
GetTickCount
GetUserDefaultLCID
GetVersionExW
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
InterlockedFlushSList
InterlockedPopEntrySList
InterlockedPushEntrySList
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LoadLibraryW
MapViewOfFile
MoveFileExW
MultiByteToWideChar
OpenFileMappingA
QueryDepthSList
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleW
ReadFile
RegisterWaitForSingleObject
ReleaseSemaphore
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFilePointerEx
SetLastError
SetStdHandle
SetThreadAffinityMask
SetThreadPriority
SetUnhandledExceptionFilter
SignalObjectAndWait
Sleep
SwitchToThread
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
UnmapViewOfFile
UnregisterWait
UnregisterWaitEx
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
WaitForSingleObjectEx
WideCharToMultiByte
WriteConsoleW
WriteFile
Sections
.text Size: 711KB - Virtual size: 710KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 137KB - Virtual size: 137KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 20KB - Virtual size: 97KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 31KB - Virtual size: 30KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 44B
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ