2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk

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General

Target

2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk
Size

905KB
MD5

b2a31ff4048cc5c9ec4e5d44e742a94b
SHA1

63892286dd4505971f1c061b70e21c6760bddc47
SHA256

acfe65cf08cb8b8239b27d762f68f6602210b686cd88438a24f6c77d8524ff46
SHA512

f74ce6a4767503ea1ce8d3f6fba89a9acf25abe3d6e53c2c0acbdba20dc56c834949203dd46ad10a06166912f0cd222b9ae9e3c9db8eb011672d86f17ee69c3f
SSDEEP

12288:CthJIq+H3rw6R59ES7lWtE02rBzhzasvJZlDvRHeplOwFGwhMTSVTPEDSukrEOIe:CX+qS7ZGSL5FxJPp+ewwwh2SZAO

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk

Files

2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk
.exe windows:6 windows x64 arch:x64

ae38d001749e4b5f233dc680bc3b0e4b

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
GetLastError
SetLastError
SetErrorMode
GetThreadErrorMode
IsThreadAFiber
DeviceIoControl
Sleep
GetCurrentProcess
GetCurrentProcessId
ExitProcess
SwitchToThread
TlsAlloc
FlushProcessWriteBuffers
FlushInstructionCache
GetTickCount
GetTickCount64
GetLargePageMinimum
GetModuleFileNameA
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
LoadResource
LockResource
SizeofResource
FindResourceW
IsDebuggerPresent
GlobalAlloc
LocalAlloc
LocalFree
GetShortPathNameA
ConvertFiberToThread
IsSystemResumeAutomatic
GetSystemDEPPolicy
lstrcpyA
lstrcatA
lstrlenA
UnregisterApplicationRestart
GetACP
GetOEMCP
GetThreadLocale
GetUserDefaultUILanguage
GetThreadUILanguage
FreeConsole
GetConsoleOutputCP
K32QueryWorkingSetEx
WriteConsoleW
CreateFileW
SetFilePointerEx
GetConsoleMode
GetLogicalDrives
GetEnvironmentVariableA
GetEnvironmentStringsW
LoadLibraryA
GetCommandLineW
GetConsoleCP
FlushFileBuffers
HeapReAlloc
HeapSize
RaiseException
GetProcessHeap
LCMapStringW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
GetStartupInfoW
RtlUnwindEx
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
GetStdHandle
WriteFile
GetModuleHandleExW
HeapFree
HeapAlloc
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetCPInfo
GetCommandLineA
MultiByteToWideChar
WideCharToMultiByte
FreeEnvironmentStringsW
SetStdHandle
GetFileType
GetStringTypeW

user32

FlashWindow
GetPropW
GetWindowLongW

winspool.drv

GetPrinterDataW
GetPrinterDataA

advapi32

GetTokenInformation
GetSidSubAuthority
OpenProcessToken
RegDisablePredefinedCacheEx

shell32

ShellExecuteExW
ord680
ShellExecuteA

shlwapi

StrStrA

winmm

timeGetTime

Sections

.text
Size: 146KB - Virtual size: 145KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 36KB - Virtual size: 36KB

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: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 512B - Virtual size: 164B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 712KB - Virtual size: 711KB

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

Sharing

General

Malware Config

Signatures

Files

ae38d001749e4b5f233dc680bc3b0e4b

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

winspool.drv

advapi32

shell32

shlwapi

winmm

Sections

.text Size: 146KB - Virtual size: 145KB

.rdata Size: 36KB - Virtual size: 36KB

.data Size: 3KB - Virtual size: 7KB

.pdata Size: 4KB - Virtual size: 3KB

.gfids Size: 512B - Virtual size: 164B

.rsrc Size: 712KB - Virtual size: 711KB

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

.text
Size: 146KB - Virtual size: 145KB

.rdata
Size: 36KB - Virtual size: 36KB

.data
Size: 3KB - Virtual size: 7KB

.pdata
Size: 4KB - Virtual size: 3KB

.gfids
Size: 512B - Virtual size: 164B

.rsrc
Size: 712KB - Virtual size: 711KB

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