Static task
static1
Behavioral task
behavioral1
Sample
2024-05-22_37886fa2efe16a4d58bf986563044d51_cobalt-strike_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-22_37886fa2efe16a4d58bf986563044d51_cobalt-strike_ryuk.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-22_37886fa2efe16a4d58bf986563044d51_cobalt-strike_ryuk
-
Size
382KB
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MD5
37886fa2efe16a4d58bf986563044d51
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SHA1
206d52c2a3e2b255831cd1cc9995149438b2d41c
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SHA256
fdf50bf4f59ddc8fd52a5353d77719890e9fde0c6fd00cef2221d0b94a591d96
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SHA512
048cee5eadcf103792f6a3dcf74e124c894d3554a7d4a0cf24e8453be84a44d606794b4ef0d7300288c4f09cb3b6113937498e8821a5887fd9b48203e20a23a2
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SSDEEP
6144:ZhVGpJF/87q+6AAhxO/VoVge1jGwF0lj:Z/GTZ8++6jxae1jGwFa
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-22_37886fa2efe16a4d58bf986563044d51_cobalt-strike_ryuk
Files
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2024-05-22_37886fa2efe16a4d58bf986563044d51_cobalt-strike_ryuk.exe windows:6 windows x64 arch:x64
0b5beb031a686ca241e2aa8220cccfff
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
CloseHandle
CreateFileW
DeleteCriticalSection
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlushFileBuffers
FlushInstructionCache
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetEnvironmentStringsW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetThreadContext
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
MultiByteToWideChar
OpenProcess
QueryPerformanceCounter
RaiseException
ResumeThread
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetFilePointerEx
SetLastError
SetStdHandle
SetThreadContext
SetUnhandledExceptionFilter
Sleep
SuspendThread
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualAlloc
VirtualFree
VirtualProtect
VirtualProtectEx
VirtualQuery
VirtualQueryEx
WideCharToMultiByte
WriteConsoleW
WriteFile
winhttp
WinHttpCloseHandle
WinHttpConnect
WinHttpCrackUrl
WinHttpOpen
WinHttpOpenRequest
WinHttpQueryHeaders
WinHttpReadData
WinHttpReceiveResponse
WinHttpSendRequest
Sections
.text Size: 162KB - Virtual size: 161KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 37KB - Virtual size: 37KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 58KB - Virtual size: 62KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.detourc Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.detourd Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.voltbl Size: 512B - Virtual size: 48B
_RDATA Size: 512B - Virtual size: 244B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 92KB - Virtual size: 92KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 16KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ