2024-02-03_e94d4f3df28d1244ff259f2a281fdf34_ryuk

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General

Target

2024-02-03_e94d4f3df28d1244ff259f2a281fdf34_ryuk
Size

2.3MB
MD5

e94d4f3df28d1244ff259f2a281fdf34
SHA1

b425c119f45355fa840fd7f5409892a7da284d14
SHA256

c6cafe993553262e5b03f4fe7d5915bc2a74b02992a9b7211d3895b1bb4d46a5
SHA512

3efbc03e5c1bcb1a9e26ab2d47211881e737b94e734deb784f6c6463e214be37664b57ee5035209ff1e24edd62b77f89d7d4ca0efdd77cd8058af2f695088c63
SSDEEP

49152:dS3oGbnQ/7WUT9uDkYOMwwnMb4PmyVzUDkYOMwwnMb4PmyV:WopYOXwnS4rVtYOXwnS4rV

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-02-03_e94d4f3df28d1244ff259f2a281fdf34_ryuk

Files

2024-02-03_e94d4f3df28d1244ff259f2a281fdf34_ryuk
.exe windows:6 windows x64 arch:x64

3d6e639a43091db7c35c1c6eec1be2df

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

E:\A\_work\2114\s\core-setup\Bin\obj\win-x64.Release\corehost\cli\exe\dotnet\Release\dotnet.pdb

Imports

kernel32

GetEnvironmentVariableW
FindClose
FindFirstFileExW
FindNextFileW
GetFileAttributesExW
GetFullPathNameW
CloseHandle
GetLastError
GetCurrentProcess
GetModuleFileNameW
GetModuleHandleExW
GetProcAddress
LoadLibraryExW
MultiByteToWideChar
WideCharToMultiByte
FreeLibrary
RtlUnwindEx
RaiseException
RtlPcToFileHeader
InitializeSListHead
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
IsProcessorFeaturePresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
WaitForSingleObjectEx
ResetEvent
SetEvent
LCMapStringW
GetStringTypeW
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW

api-ms-win-crt-runtime-l1-1-0

__p___wargv
_invalid_parameter_noinfo_noreturn
__p___argc
_exit
exit
_initterm_e
_initterm
_get_initial_wide_environment
abort
_initialize_wide_environment
_configure_wide_argv
_set_app_type
_seh_filter_exe
_cexit
_errno
_crt_atexit
terminate
_register_onexit_function
_initialize_onexit_table
_register_thread_local_exe_atexit_callback
_c_exit

api-ms-win-crt-math-l1-1-0

__setusermatherr
frexp

api-ms-win-crt-heap-l1-1-0

malloc
free
_free_base
_callnewh
_calloc_base
_set_new_mode
calloc

api-ms-win-crt-stdio-l1-1-0

fputwc
_set_fmode
__acrt_iob_func
__stdio_common_vsprintf_s
__p__commode
__stdio_common_vfwprintf
fflush

api-ms-win-crt-string-l1-1-0

strcpy_s
_wcsicmp
wcsnlen
memset
strcspn
_wcsdup

api-ms-win-crt-locale-l1-1-0

__pctype_func
localeconv
___mb_cur_max_func
setlocale
___lc_codepage_func
_unlock_locales
_lock_locales
_configthreadlocale
___lc_locale_name_func

api-ms-win-crt-convert-l1-1-0

wcstoul
_wtoi

api-ms-win-crt-multibyte-l1-1-0

_ismbblead

Sections

.text
Size: 70KB - Virtual size: 69KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 49KB - Virtual size: 49KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 5KB

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

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2KB - Virtual size: 2KB

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

3d6e639a43091db7c35c1c6eec1be2df

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-multibyte-l1-1-0

Sections

.text Size: 70KB - Virtual size: 69KB

.rdata Size: 49KB - Virtual size: 49KB

.data Size: 2KB - Virtual size: 5KB

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

.tls Size: 512B - Virtual size: 9B

.rsrc Size: 2KB - Virtual size: 2KB

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

.text
Size: 70KB - Virtual size: 69KB

.rdata
Size: 49KB - Virtual size: 49KB

.data
Size: 2KB - Virtual size: 5KB

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

.tls
Size: 512B - Virtual size: 9B

.rsrc
Size: 2KB - Virtual size: 2KB

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