Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_f11a08e6bdb35ca166aa27dc2e391f65_cobalt-strike_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-25_f11a08e6bdb35ca166aa27dc2e391f65_cobalt-strike_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-25_f11a08e6bdb35ca166aa27dc2e391f65_cobalt-strike_ryuk
-
Size
287KB
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MD5
f11a08e6bdb35ca166aa27dc2e391f65
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SHA1
00a1abcb92cdfa1131c39a6acc4c08b79ed2a996
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SHA256
fe390a005250db11dcd916a1c80672624af620b743a055f119a33c3e5f18f9da
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SHA512
3022e1eb5d546ecc9b8b2509a59893ff9e802d56e7f6d6e4c055f8c32e07009c1087e2a725fa2f281d9637d7b99622819410db33cc0f02371a5775e93236dde6
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SSDEEP
6144:W869poBwLPj+LKA0/8bG9Z7QNV73PoiIFGvP1Pd5hkbvn:W2LzCP9qNVjg+N15hkrn
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-25_f11a08e6bdb35ca166aa27dc2e391f65_cobalt-strike_ryuk
Files
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2024-01-25_f11a08e6bdb35ca166aa27dc2e391f65_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
8e3c9d1c4eb12a7f3b530adeb95f6160
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
AreFileApisANSI
CloseHandle
CreateEventW
CreateFileW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetEndOfFile
SetEvent
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
WaitForSingleObjectEx
WideCharToMultiByte
WriteConsoleW
WriteFile
Sections
.text Size: 216KB - Virtual size: 216KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 50KB - Virtual size: 50KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 6KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 140B
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 348B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_sysc Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 424B
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