2024-10-15_8a3480b17c05c5ea47d54e699467f72e_ryuk

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General

Target

2024-10-15_8a3480b17c05c5ea47d54e699467f72e_ryuk
Size

4.7MB
MD5

8a3480b17c05c5ea47d54e699467f72e
SHA1

07f466a5af4fa467943e3ca91283ec28c3b30134
SHA256

1ff8bbb0aeba5a875c466ccff31a9d38248d10beef5b258caafaaff95a282517
SHA512

3e49c2a085920900f206e916cb9c7069a3e289c94f1f76bb805659c57047b9fe22938393c7359f65313f72f7eb8815a925a40765e9fc4e2e827f4257059ed966
SSDEEP

98304:QVkw6Tj1dDKJGskFh2OnoJbX+vwdn20vwdnjm:Quw6Tj1JKJGskj2bnd2td

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-10-15_8a3480b17c05c5ea47d54e699467f72e_ryuk

Files

2024-10-15_8a3480b17c05c5ea47d54e699467f72e_ryuk
.exe windows:6 windows x64 arch:x64

8acc1b0fe5be5deb43a459b379acb82c

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

VirtualQuery
PeekNamedPipe
AreFileApisANSI
GetFileInformationByHandle
GetDriveTypeW
CreateFileW
GetModuleHandleExW
OutputDebugStringW
GetStartupInfoW
GetLastError
InitializeSListHead
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
CreateEventW
WaitForSingleObjectEx
ReadConsoleW
ReadConsoleA
SetConsoleMode
GetConsoleMode
GetSystemTimeAsFileTime
QueryPerformanceCounter
GetACP
GetEnvironmentVariableW
GetModuleHandleW
WriteFile
GetFileType
GetStdHandle
FindNextFileW
FindFirstFileW
FindClose
SystemTimeToFileTime
GetSystemTime
CreateProcessA
ExitProcess
CloseHandle
VirtualAlloc
VirtualFree
IsDebuggerPresent
GetModuleFileNameA
FormatMessageA
LoadLibraryA
FreeLibrary
GetSystemDirectoryA
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
GetCurrentProcessId
UnmapViewOfFile
SwitchToThread
AcquireSRWLockShared
ReleaseSRWLockShared
MultiByteToWideChar
CreateFileMappingA
lstrlenA
GetProcAddress
GetModuleHandleA
MapViewOfFileEx
GetFileSize
CreateFileA
Sleep
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
InitializeCriticalSectionEx
WideCharToMultiByte
GetCurrentThreadId
CreateEventA
WaitForSingleObject
ResetEvent
SetEvent
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
LeaveCriticalSection
EnterCriticalSection
InitializeSRWLock
GetProcessHeap
HeapSize
HeapFree
HeapReAlloc
HeapAlloc
HeapDestroy
SetLastError

user32

MoveWindow
DispatchMessageW
RegisterClassExW
CreateWindowExW
DefWindowProcW
GetMessageW
TranslateMessage
MessageBoxW
GetUserObjectInformationW
GetProcessWindowStation
MsgWaitForMultipleObjects
PeekMessageA
DispatchMessageA
LoadIconW
LoadCursorW
PostQuitMessage

comdlg32

GetSaveFileNameW
GetOpenFileNameW

ws2_32

getsockname
getsockopt
htonl
htons
select
send
setsockopt
shutdown
WSASetLastError
WSAIoctl
WSAStringToAddressA
getaddrinfo
freeaddrinfo
inet_ntop
getpeername
socket
WSAStartup
WSACleanup
connect
recv
WSACloseEvent
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAResetEvent
WSAWaitForMultipleEvents
inet_addr
inet_ntoa
gethostbyaddr
gethostbyname
getservbyport
getservbyname
ioctlsocket
closesocket
__WSAFDIsSet
bind
ntohs
WSAGetLastError

crypt32

CertEnumCertificatesInStore
CertGetCertificateContextProperty
CertCloseStore
CertOpenStore
CertFindCertificateInStore
CertDuplicateCertificateContext
CertFreeCertificateContext

shlwapi

StrChrA

winmm

timeBeginPeriod
timeGetDevCaps
timeGetTime
timeEndPeriod

bcrypt

BCryptGenRandom

msvcrt

_gmtime64_s
atoi
fgets
feof
fclose
strncmp
abort
_beginthreadex
realloc
_errno
calloc
malloc
_localtime64
_time64
_mktime64
_difftime64
__C_specific_handler
wcsstr
memchr
strrchr
strchr
strstr
memcmp
__CxxFrameHandler3
_CxxThrowException
memset
memmove
memcpy
_lock
qsort
strcmp
strcpy_s
strcat_s
raise
strncpy_s
strtoul
strerror_s
ferror
fflush
_fileno
fread
fseek
ftell
setvbuf
_setmode
strncpy
strspn
strcspn
isspace
_wfopen
fopen
_clearfp
log10
ceil
_strtoui64
_isatty
_msize
?terminate@@YAXXZ
_commode
?_set_new_mode@@YAHH@Z
_wcmdln
__wgetmainargs
__set_app_type
_XcptFilter
___lc_codepage_func
_wfullpath
_wcsicmp
wcspbrk
__doserrno
wctomb_s
_mbtowc_l
wcstol
wcsnlen
___mb_cur_max_func
_getdrive
_iob
free
_unlock
__pctype_func
_callnewh
_set_fmode
_initterm_e
_initterm
isdigit
tolower
signal
fputs
strtol
strnlen
getenv
wcsrchr
_amsg_exit

advapi32

CryptDecrypt
RegisterEventSourceW
ReportEventW
CryptAcquireContextW
CryptReleaseContext
CryptDestroyKey
CryptSetHashParam
CryptGetProvParam
CryptEnumProvidersW
CryptSignHashW
CryptDestroyHash
CryptCreateHash
DeregisterEventSource
CryptExportKey
CryptGetUserKey

Exports

Exports

LZ4_attach_dictionary
LZ4_compress
LZ4_compressBound
LZ4_compress_continue
LZ4_compress_default
LZ4_compress_destSize
LZ4_compress_fast
LZ4_compress_fast_continue
LZ4_compress_fast_extState
LZ4_compress_limitedOutput
LZ4_compress_limitedOutput_continue
LZ4_compress_limitedOutput_withState
LZ4_compress_withState
LZ4_create
LZ4_createStream
LZ4_createStreamDecode
LZ4_decoderRingBufferSize
LZ4_decompress_fast
LZ4_decompress_fast_continue
LZ4_decompress_fast_usingDict
LZ4_decompress_fast_withPrefix64k
LZ4_decompress_safe
LZ4_decompress_safe_continue
LZ4_decompress_safe_partial
LZ4_decompress_safe_partial_usingDict
LZ4_decompress_safe_usingDict
LZ4_decompress_safe_withPrefix64k
LZ4_freeStream
LZ4_freeStreamDecode
LZ4_initStream
LZ4_loadDict
LZ4_loadDictSlow
LZ4_resetStream
LZ4_resetStreamState
LZ4_resetStream_fast
LZ4_saveDict
LZ4_setStreamDecode
LZ4_sizeofState
LZ4_sizeofStreamState
LZ4_slideInputBuffer
LZ4_uncompress
LZ4_uncompress_unknownOutputSize
LZ4_versionNumber
LZ4_versionString
llhttp_errno_name
llhttp_execute
llhttp_finish
llhttp_get_errno
llhttp_get_error_pos
llhttp_get_error_reason
llhttp_get_http_major
llhttp_get_http_minor
llhttp_get_method
llhttp_get_status_code
llhttp_get_type
llhttp_get_upgrade
llhttp_init
llhttp_message_needs_eof
llhttp_method_name
llhttp_pause
llhttp_reset
llhttp_resume
llhttp_resume_after_upgrade
llhttp_set_error_reason
llhttp_set_lenient_chunked_length
llhttp_set_lenient_data_after_close
llhttp_set_lenient_headers
llhttp_set_lenient_keep_alive
llhttp_set_lenient_optional_cr_before_lf
llhttp_set_lenient_optional_crlf_after_chunk
llhttp_set_lenient_optional_lf_after_cr
llhttp_set_lenient_spaces_after_chunk_size
llhttp_set_lenient_transfer_encoding
llhttp_set_lenient_version
llhttp_settings_init
llhttp_should_keep_alive
llhttp_status_name

Sections

.text
Size: 2.0MB - Virtual size: 2.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 29KB - Virtual size: 39KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 114KB - Virtual size: 113KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 512B - Virtual size: 72B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.gehcont
Size: 512B - Virtual size: 4B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.textshe
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.reloc
Size: 39KB - Virtual size: 38KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8acc1b0fe5be5deb43a459b379acb82c

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

comdlg32

ws2_32

crypt32

shlwapi

winmm

bcrypt

msvcrt

advapi32

Exports

Exports

Sections

.text Size: 2.0MB - Virtual size: 2.0MB

.rdata Size: 1.3MB - Virtual size: 1.3MB

.data Size: 29KB - Virtual size: 39KB

.pdata Size: 114KB - Virtual size: 113KB

.gfids Size: 512B - Virtual size: 72B

.tls Size: 1KB - Virtual size: 1KB

.gehcont Size: 512B - Virtual size: 4B

.textshe Size: 1.3MB - Virtual size: 1.3MB

.reloc Size: 39KB - Virtual size: 38KB

.text
Size: 2.0MB - Virtual size: 2.0MB

.rdata
Size: 1.3MB - Virtual size: 1.3MB

.data
Size: 29KB - Virtual size: 39KB

.pdata
Size: 114KB - Virtual size: 113KB

.gfids
Size: 512B - Virtual size: 72B

.tls
Size: 1KB - Virtual size: 1KB

.gehcont
Size: 512B - Virtual size: 4B

.textshe
Size: 1.3MB - Virtual size: 1.3MB

.reloc
Size: 39KB - Virtual size: 38KB