Static task
static1
Behavioral task
behavioral1
Sample
2024-11-20_ffb37a64e91c59db36040b8ba7c6bdad_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-20_ffb37a64e91c59db36040b8ba7c6bdad_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-20_ffb37a64e91c59db36040b8ba7c6bdad_ryuk
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Size
3.6MB
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MD5
ffb37a64e91c59db36040b8ba7c6bdad
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SHA1
cb8d52d44bf6fbe94d793cf3f222f6a956eb32cf
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SHA256
598c3b6790b9743c04ffec399bbd8096f873a1edcf32ee6fb6bd3c30900095cd
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SHA512
bbd54464e14138bf375390b74097521fb95c1dc9cd07834d709983ff73433cdbf5061afb9bdf1d50b093e1705f990d6c7b451bcfbe017f2ed0f656f010ef0edc
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SSDEEP
49152:0QusxfsBXlpHgWycTjhkT4hE53e4ndn4fvFhPCNIFQv9n6Vp:5op
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource 2024-11-20_ffb37a64e91c59db36040b8ba7c6bdad_ryuk
Files
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2024-11-20_ffb37a64e91c59db36040b8ba7c6bdad_ryuk.exe windows:6 windows x64 arch:x64
c58be42386d57a9e071eace1fff5fa37
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
user32
GetRawInputDeviceInfoW
GetRawInputDeviceList
kernel32
AreFileApisANSI
CloseHandle
CreateFileW
CreateProcessW
DecodePointer
DeleteCriticalSection
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetExitCodeProcess
GetFileAttributesExW
GetFileInformationByHandleEx
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemInfo
GetSystemTimeAsFileTime
GetThreadContext
GetUserDefaultLCID
GlobalAlloc
GlobalFree
HeapAlloc
HeapFree
HeapQueryInformation
HeapReAlloc
HeapSize
HeapValidate
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
K32EnumDeviceDrivers
K32GetDeviceDriverBaseNameW
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MultiByteToWideChar
OutputDebugStringW
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ResumeThread
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetFilePointerEx
SetLastError
SetStdHandle
SetThreadContext
SetUnhandledExceptionFilter
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualAllocEx
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
WriteProcessMemory
mpr
WNetCloseEnum
WNetEnumResourceA
WNetOpenEnumA
Sections
.text Size: 453KB - Virtual size: 453KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 29KB - Virtual size: 29KB
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: 22KB - Virtual size: 22KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 140B
_RDATA Size: 512B - Virtual size: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 424B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ