Static task
static1
Behavioral task
behavioral1
Sample
2024-06-09_b03eaba2f91f9d591abd08a6906bee51_cobalt-strike_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-09_b03eaba2f91f9d591abd08a6906bee51_cobalt-strike_ryuk.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-09_b03eaba2f91f9d591abd08a6906bee51_cobalt-strike_ryuk
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Size
135KB
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MD5
b03eaba2f91f9d591abd08a6906bee51
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SHA1
7460cad8f6b8ca7e76762d4accfa5018b3c989f3
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SHA256
652296dce1e2de3cd94817a8384344289c80e7a486ced29ae38a71dffcedd238
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SHA512
d2fd07ed16ffd880d3c5996f21b513239d8cf729189818283fc86a7720102d09a6b9d7addb8de2a4281f15b76e2a9cded1354151bacea71f65cd129277ab8683
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SSDEEP
3072:7Y2um+bs1wivga42qkyvGKYbVPottpIYvp:7Y81wivgr5lvG1bVMNv
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-09_b03eaba2f91f9d591abd08a6906bee51_cobalt-strike_ryuk
Files
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2024-06-09_b03eaba2f91f9d591abd08a6906bee51_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
e21f3eb19231129f71fa67787e206245
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
api-ms-win-core-synch-l1-2-0
WaitOnAddress
WakeByAddressSingle
kernel32
AddVectoredExceptionHandler
CloseHandle
CompareStringW
CreateFileW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDiskFreeSpaceExW
GetEnvironmentStringsW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetEnvironmentVariableW
SetFilePointerEx
SetLastError
SetStdHandle
SetThreadStackGuarantee
SetUnhandledExceptionFilter
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
oleaut32
GetErrorInfo
user32
MessageBoxW
ntdll
NtWriteFile
RtlNtStatusToDosError
Sections
.text Size: 77KB - Virtual size: 76KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 41KB - Virtual size: 40KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 58B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.voltbl Size: 512B - Virtual size: 49B
_RDATA Size: 512B - Virtual size: 244B
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