2024-08-22_b8e3bea3a8df7bb7120c2859e3bcef47_cobalt-strike_ryuk

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General

Target

2024-08-22_b8e3bea3a8df7bb7120c2859e3bcef47_cobalt-strike_ryuk
Size

3.8MB
MD5

b8e3bea3a8df7bb7120c2859e3bcef47
SHA1

dc91f5e629c9470bec534a924dc300bf35882ce2
SHA256

590fba27e5327352aad94957afd43f14d370994a336f90e64ce21ccaa1af9bea
SHA512

f45b5cec1a1957cff6a3ba3b3cf768a11f0628e0b6e2a50d33f2288c9ac0bd5aab48660d4040211f4e767b3ec5b5974e3d9e281e34b4a60d117b8736c4bce1a0
SSDEEP

49152:iEAVIG+AxaIYV/n5kpShu2DDygYwmBkkNwyzNwwzYdpx29UBzP15mQhsOewcsSgZ:iFVP+AxaIkvepGQJobxXR1Jhsrs1wY

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-08-22_b8e3bea3a8df7bb7120c2859e3bcef47_cobalt-strike_ryuk

Files

2024-08-22_b8e3bea3a8df7bb7120c2859e3bcef47_cobalt-strike_ryuk
.exe windows:6 windows x64 arch:x64

246fe239f206019c9f38b9a75b486529

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

AcquireSRWLockExclusive
CloseHandle
CreateFileW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetComputerNameA
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
InitializeSRWLock
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
ReleaseSRWLockExclusive
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile

advapi32

GetUserNameA

Sections

.text
Size: 329KB - Virtual size: 329KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 46KB - Virtual size: 45KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.00cfg
Size: 512B - Virtual size: 40B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gehcont
Size: 512B - Virtual size: 48B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.voltbl
Size: 512B - Virtual size: 48B

_RDATA
Size: 512B - Virtual size: 244B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.von!
Size: 2.5MB - Virtual size: 2.5MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 18KB - Virtual size: 17KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rtext
Size: 965KB - Virtual size: 965KB

IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

246fe239f206019c9f38b9a75b486529

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

Sections

.text Size: 329KB - Virtual size: 329KB

.rdata Size: 46KB - Virtual size: 45KB

.data Size: 3KB - Virtual size: 8KB

.pdata Size: 5KB - Virtual size: 5KB

.00cfg Size: 512B - Virtual size: 40B

.gehcont Size: 512B - Virtual size: 48B

.voltbl Size: 512B - Virtual size: 48B

_RDATA Size: 512B - Virtual size: 244B

.von! Size: 2.5MB - Virtual size: 2.5MB

.reloc Size: 2KB - Virtual size: 1KB

.rsrc Size: 18KB - Virtual size: 17KB

.rtext Size: 965KB - Virtual size: 965KB

.text
Size: 329KB - Virtual size: 329KB

.rdata
Size: 46KB - Virtual size: 45KB

.data
Size: 3KB - Virtual size: 8KB

.pdata
Size: 5KB - Virtual size: 5KB

.00cfg
Size: 512B - Virtual size: 40B

.gehcont
Size: 512B - Virtual size: 48B

.voltbl
Size: 512B - Virtual size: 48B

_RDATA
Size: 512B - Virtual size: 244B

.von!
Size: 2.5MB - Virtual size: 2.5MB

.reloc
Size: 2KB - Virtual size: 1KB

.rsrc
Size: 18KB - Virtual size: 17KB

.rtext
Size: 965KB - Virtual size: 965KB