Static task
static1
Behavioral task
behavioral1
Sample
2024-04-10_33d3e46612d51b0ab697945366c78c0c_cobalt-strike_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-10_33d3e46612d51b0ab697945366c78c0c_cobalt-strike_ryuk.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-10_33d3e46612d51b0ab697945366c78c0c_cobalt-strike_ryuk
-
Size
313KB
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MD5
33d3e46612d51b0ab697945366c78c0c
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SHA1
c0c3af5b3fc02b59f4182c6340bca351aceba004
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SHA256
a1c29005c357d7271d8fe145e902fdfcd484492146ddb820a6521ce37da24adc
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SHA512
f756d2a65c2d67a5a7139535c85f0305457aeea3a9bdc1e48469d27660113ac1d1b56bc580e5a4d63b7a1ff715a186697ebb389d89d2d2981176020dd68d3e42
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SSDEEP
6144:QfsvyzNHjstwAOS0MV6RhFmb4xLWHgw6ymyQbjveB:4sv2PAOS0MwmbyLWHgw6+Qbe
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-10_33d3e46612d51b0ab697945366c78c0c_cobalt-strike_ryuk
Files
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2024-04-10_33d3e46612d51b0ab697945366c78c0c_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
9b73ad7bbff3913ea229db20652f40f7
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
kernel32
AreFileApisANSI
CloseHandle
CompareStringW
CreateFileW
CreateProcessA
CreateToolhelp32Snapshot
DecodePointer
DeleteCriticalSection
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetConsoleScreenBufferInfo
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetFileAttributesExW
GetFileInformationByHandleEx
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetModuleFileNameA
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetUserDefaultLCID
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
K32EnumProcessModules
K32GetModuleBaseNameA
K32GetModuleInformation
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MultiByteToWideChar
OpenProcess
Process32First
Process32Next
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ReadProcessMemory
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleTitleA
SetEndOfFile
SetEnvironmentVariableW
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
WriteProcessMemory
advapi32
AdjustTokenPrivileges
LookupPrivilegeValueA
OpenProcessToken
urlmon
URLDownloadToFileA
Sections
.text Size: 208KB - Virtual size: 208KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 73KB - Virtual size: 73KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 11KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 11KB - Virtual size: 11KB
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: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 92B
_RDATA Size: 512B - Virtual size: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 432B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ