2024-10-02_b7cff25afbb66d5e413415ab75eb684a_ryuk

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General

Target

2024-10-02_b7cff25afbb66d5e413415ab75eb684a_ryuk
Size

4.1MB
MD5

b7cff25afbb66d5e413415ab75eb684a
SHA1

61510b0db6e84dfa039699ced79330b962365b0c
SHA256

340660309214e265658c74d17578d8a685b6548eaff7d8f2252870deeb436c97
SHA512

90d76aeb48d389b8144e003077d93aabc529eeca7984647ff69dde987c69183a64eecc859e6fb89250725d67a5f6ab6dbb4713df2ecd9d6f9333206155ff19ce
SSDEEP

49152:RB4ZIG+78Pd6UTWZd8fzuaETfPzEtnirOlGnbmmhX8vbIwdWGZAtHkazOPKvIY8i:PaxPdydxayf2SRGwHkETn

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-10-02_b7cff25afbb66d5e413415ab75eb684a_ryuk

Files

2024-10-02_b7cff25afbb66d5e413415ab75eb684a_ryuk
.exe windows:6 windows x64 arch:x64

88857656a7cd00c53ec58ff71bc5c86e

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

VirtualAlloc
VirtualQuery
UnmapViewOfFile
FreeLibrary
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
MultiByteToWideChar
VirtualFree
ExitProcess
GetSystemDirectoryW
GetCurrentThreadId
SwitchToThread
GetCurrentProcessId
Sleep
CreateEventW
WaitForSingleObject
ResetEvent
SetEvent
AcquireSRWLockShared
PeekNamedPipe
GetDriveTypeW
GetModuleHandleExW
AcquireSRWLockExclusive
InitializeSListHead
GetTickCount64
GetSystemTimeAsFileTime
ReleaseSRWLockShared
ReleaseSRWLockExclusive
HeapFree
HeapAlloc
GetStartupInfoW
IsDebuggerPresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
IsProcessorFeaturePresent
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
WaitForSingleObjectEx
ReadConsoleW
ReadConsoleA
SetConsoleMode
GetConsoleMode
GetACP
GetEnvironmentVariableW
WriteFile
GetFileType
GetStdHandle
FindNextFileW
FindFirstFileW
FindClose
SystemTimeToFileTime
GetSystemTime
FormatMessageA
GetSystemDirectoryA
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
CreateFileMappingA
lstrlenA
GetModuleHandleA
MapViewOfFileEx
GetFileSize
QueryPerformanceCounter
SetLastError
GetLastError
AreFileApisANSI
GetFileInformationByHandle
GetFileAttributesW
OutputDebugStringW
CreateFileA
InitializeCriticalSectionEx
WideCharToMultiByte
CreateEventA
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
LeaveCriticalSection
EnterCriticalSection
InitializeSRWLock
GetProcessHeap
HeapSize
HeapReAlloc
HeapDestroy
CreateFileW

user32

MessageBoxW
GetUserObjectInformationW
GetProcessWindowStation
MsgWaitForMultipleObjects
DispatchMessageA
PeekMessageA
TranslateMessage

advapi32

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

ws2_32

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

crypt32

CertOpenStore
CertCloseStore
CertEnumCertificatesInStore
CertFindCertificateInStore
CertDuplicateCertificateContext
CertFreeCertificateContext
CertGetCertificateContextProperty

shlwapi

StrChrA

winmm

timeGetTime
timeGetDevCaps
timeBeginPeriod
timeEndPeriod

bcrypt

BCryptGenRandom

msvcrt

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

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: 30KB - 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: 724KB - Virtual size: 723KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 2KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

88857656a7cd00c53ec58ff71bc5c86e

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

ws2_32

crypt32

shlwapi

winmm

bcrypt

msvcrt

Exports

Exports

Sections

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

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

.data Size: 30KB - 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: 724KB - Virtual size: 723KB

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

.rsrc Size: 2KB - Virtual size: 4KB

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

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

.data
Size: 30KB - 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: 724KB - Virtual size: 723KB

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

.rsrc
Size: 2KB - Virtual size: 4KB