2024-02-01_ee1f6818516725cee2eec2d19fe8cbcf_ryuk

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General

Target

2024-02-01_ee1f6818516725cee2eec2d19fe8cbcf_ryuk
Size

947KB
MD5

ee1f6818516725cee2eec2d19fe8cbcf
SHA1

1a283bba7461325b1ef5bc067e4c7b29160aae31
SHA256

7de31b865b3224521232cdae4bf86552b127de0acc79bca3dccb6639254a1cc1
SHA512

1820003fcad77d7af511c9c266bd2877f9873478eb206ccc1c3eec44ec6127a26f5acd940b810430c82e4efb3ef0698d693762d88ccfefafa89be0cfc9972368
SSDEEP

12288:+bTsbhct7LrBYxHHGp/yum4Pr/FUPG6srCVFC:WsbhctGnGp/yf4PTWPGtCVFC

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-02-01_ee1f6818516725cee2eec2d19fe8cbcf_ryuk

Files

2024-02-01_ee1f6818516725cee2eec2d19fe8cbcf_ryuk
.exe windows:6 windows x64 arch:x64

07cbfb6063dec836033569e5d69bad18

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

sshd.pdb

Imports

libcrypto

AES_set_encrypt_key
DSA_SIG_new
DSA_SIG_free
RSA_public_decrypt
EVP_CIPHER_CTX_get_app_data
BN_div
RSA_size
EC_POINT_oct2point
AES_encrypt
BN_bn2bin
RSA_sign
DSA_do_sign
EC_GROUP_get_degree
ECDSA_SIG_free
ECDSA_SIG_new
EC_POINT_point2oct
RAND_status
ECDSA_do_sign
SSLeay
EVP_sha384
DSA_do_verify
EVP_MD_CTX_copy_ex
EVP_MD_CTX_cleanup
EVP_md5
EVP_sha256
DH_size
DH_free
EVP_DigestUpdate
EVP_Digest
EVP_DigestInit_ex
EC_KEY_new_by_curve_name
BN_bin2bn
EC_KEY_get0_group
DH_compute_key
ECDSA_do_verify
EVP_MD_CTX_md
EVP_sha1
EVP_MD_block_size
EVP_sha512
EVP_MD_CTX_init
EC_POINT_new
EVP_DigestFinal_ex
EVP_CIPHER_CTX_key_length
EVP_CIPHER_CTX_new
EVP_aes_256_cbc
EVP_CIPHER_CTX_iv_length
EVP_CipherInit
EVP_des_ede3_cbc
EVP_aes_192_cbc
EVP_CIPHER_CTX_set_key_length
EVP_Cipher
EVP_CIPHER_CTX_free
BN_is_bit_set
BN_hex2bn
DH_new
DH_generate_key
RSA_blinding_on
BN_dup
EC_GROUP_get_order
DSA_free
BIO_new
EC_POINT_cmp
ERR_peek_error
EC_KEY_set_private_key
BN_value_one
EVP_PKEY_get1_EC_KEY
EC_METHOD_get_field_type
EC_POINT_mul
RSA_new
RSA_free
BN_copy
ERR_get_error
EC_POINT_get_affine_coordinates_GFp
ERR_peek_last_error
EC_KEY_set_public_key
BN_CTX_get
EC_KEY_set_group
EC_POINT_is_at_infinity
BIO_s_mem
PEM_read_bio_PrivateKey
EC_POINT_free
EVP_CIPHER_CTX_set_app_data
BN_clear_free
EVP_aes_128_cbc
BN_CTX_start
EVP_PKEY_free
EVP_PKEY_get1_RSA
EC_GROUP_free
DSA_new
BIO_write
BIO_free
EC_GROUP_cmp
EVP_PKEY_get1_DSA
EC_GROUP_set_asn1_flag
EC_GROUP_get_curve_name
EC_KEY_get0_private_key
BN_CTX_new
BN_cmp
BN_sub
EC_KEY_free
EC_GROUP_new_by_curve_name
BN_CTX_free
EC_GROUP_method_of
BN_num_bits
OPENSSL_add_all_algorithms_noconf
RAND_poll
RAND_seed
RAND_bytes
SSLeay_version
ECDH_compute_key
EC_KEY_generate_key
EC_KEY_get0_public_key
BN_new

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
RaiseException
GetLastError
SetUnhandledExceptionFilter
SetLastError

api-ms-win-core-registry-l1-1-0

RegOpenKeyExW
RegCloseKey
RegCreateKeyExW
RegQueryValueExW

ws2_32

WSASend
WSARecv
GetAddrInfoW
WSASocketW
WSAIoctl
WSADuplicateSocketW
WSAGetLastError
closesocket
getpeername
getsockname
getsockopt
listen
setsockopt
shutdown
socket
gethostname
bind
FreeAddrInfoW
ntohs
WSAStartup
WSACleanup
WSAGetOverlappedResult
getnameinfo
inet_ntoa
htonl
ntohl
htons
inet_ntop

api-ms-win-core-processenvironment-l1-1-0

SetCurrentDirectoryW
GetCurrentDirectoryW
GetCommandLineA
GetCommandLineW
SetEnvironmentVariableW
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetStdHandle
SetStdHandle
ExpandEnvironmentStringsW
SetEnvironmentVariableA

api-ms-win-core-handle-l1-1-0

CloseHandle
DuplicateHandle
SetHandleInformation

api-ms-win-core-processthreads-l1-1-0

GetStartupInfoW
TlsSetValue
GetCurrentProcess
TlsGetValue
CreateThread
CreateProcessW
GetExitCodeProcess
TlsFree
OpenProcessToken
TerminateThread
CreateProcessAsUserW
GetCurrentProcessId
OpenThread
GetCurrentThreadId
QueueUserAPC
TerminateProcess
TlsAlloc
ExitProcess
CreateProcessA

api-ms-win-core-synch-l1-1-0

InitializeCriticalSectionAndSpinCount
SetWaitableTimer
EnterCriticalSection
WaitForSingleObject
CreateEventA
DeleteCriticalSection
CancelWaitableTimer
SleepEx
ResetEvent
WaitForMultipleObjectsEx
SetEvent
LeaveCriticalSection

api-ms-win-security-base-l1-1-0

IsValidSid
IsValidAcl
GetTokenInformation
FreeSid
CreateRestrictedToken
IsValidSecurityDescriptor
AllocateLocallyUniqueId
AllocateAndInitializeSid
AdjustTokenPrivileges
EqualSid
GetAce
IsWellKnownSid

rpcrt4

UuidCreate
UuidToStringW
RpcStringFreeW

api-ms-win-service-winsvc-l1-1-0

RegisterServiceCtrlHandlerW

api-ms-win-service-core-l1-1-0

StartServiceCtrlDispatcherW
SetServiceStatus

samcli

NetUserAdd
NetUserGetLocalGroups
NetUserGetInfo
NetUserGetGroups

api-ms-win-security-sddl-l1-1-0

ConvertSidToStringSidW
ConvertStringSecurityDescriptorToSecurityDescriptorW

api-ms-win-core-sysinfo-l1-1-0

GetLocalTime
GetTickCount64
GetSystemDirectoryW
GetWindowsDirectoryW
GetSystemTimeAsFileTime

api-ms-win-core-libraryloader-l1-2-0

LoadLibraryExW
FreeLibrary
GetProcAddress
GetModuleFileNameW
GetModuleHandleW
GetModuleHandleExW

api-ms-win-core-libraryloader-l1-2-1

LoadLibraryW
LoadLibraryA

api-ms-win-security-lsalookup-ansi-l2-1-0

LookupPrivilegeValueA

userenv

LoadUserProfileW

sspicli

GetUserNameExW
LsaDeregisterLogonProcess
LsaRegisterLogonProcess
LsaLogonUser
LsaLookupAuthenticationPackage
LsaFreeReturnBuffer

api-ms-win-security-lsalookup-l2-1-1

LsaManageSidNameMapping

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

GetStringTypeW
CompareStringW
MultiByteToWideChar
WideCharToMultiByte

api-ms-win-core-file-l1-1-0

FindFirstFileW
FindNextFileW
FlushFileBuffers
CreateFileA
FindFirstFileExW
GetFileType
SetEndOfFile
FindClose
GetDiskFreeSpaceExW
WriteFileEx
GetLogicalDriveStringsW
ReadFile
CreateDirectoryW
GetFullPathNameW
SetFilePointerEx
WriteFile
GetFileInformationByHandle
ReadFileEx
GetFullPathNameA
SetFileTime
GetFileAttributesExW
RemoveDirectoryW
SetFileAttributesW
DeleteFileW
CreateFileW
GetDiskFreeSpaceW
GetDriveTypeW

api-ms-win-core-debug-l1-1-0

DebugBreak
IsDebuggerPresent

crypt32

CryptStringToBinaryA
CryptBinaryToStringA

api-ms-win-core-synch-l1-2-0

Sleep

api-ms-win-core-synch-l1-2-1

CreateWaitableTimerW
WaitForMultipleObjects

api-ms-win-core-heap-l2-1-0

LocalFree

api-ms-win-core-file-l2-1-2

CopyFileW

api-ms-win-core-console-l2-1-0

ScrollConsoleScreenBufferA
SetConsoleWindowInfo
ReadConsoleOutputA
SetConsoleTextAttribute
WriteConsoleOutputA
SetConsoleScreenBufferSize
FillConsoleOutputCharacterA
GetConsoleScreenBufferInfo
SetConsoleCursorPosition
FillConsoleOutputAttribute
GetConsoleScreenBufferInfoEx
SetConsoleCursorInfo
GetLargestConsoleWindowSize
FreeConsole
GetConsoleCursorInfo

logoncli

NetGetDCName
DsGetDcNameW

wkscli

NetWkstaGetInfo

netutils

NetApiBufferFree

api-ms-win-security-provider-l1-1-0

GetNamedSecurityInfoW

api-ms-win-core-sysinfo-l1-2-0

VerSetConditionMask

api-ms-win-core-kernel32-legacy-l1-1-1

VerifyVersionInfoW

api-ms-win-core-kernel32-legacy-l1-1-0

CreateNamedPipeA
GetComputerNameW
SetConsoleTitleA

api-ms-win-core-console-l1-1-0

SetConsoleCtrlHandler
ReadConsoleInputW
SetConsoleMode
GetConsoleCP
ReadConsoleW
GetNumberOfConsoleInputEvents
PeekConsoleInputA
ReadConsoleInputA
WriteConsoleW
GetConsoleMode
WriteConsoleA

api-ms-win-core-synch-ansi-l1-1-0

CreateWaitableTimerA

api-ms-win-core-io-l1-1-1

CancelIo

api-ms-win-security-sddl-ansi-l1-1-0

ConvertSidToStringSidA
ConvertStringSidToSidA

api-ms-win-core-io-l1-1-0

CancelIoEx

api-ms-win-core-util-l1-1-0

Beep

api-ms-win-core-localization-l1-2-0

GetOEMCP
GetACP
GetCPInfo
FormatMessageA
IsValidCodePage
LCMapStringW

user32

FindWindowA
ShowWindow
GetWindowPlacement

api-ms-win-core-rtlsupport-l1-1-0

RtlUnwindEx
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext

api-ms-win-core-processthreads-l1-1-1

IsProcessorFeaturePresent

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-interlocked-l1-1-0

InitializeSListHead

api-ms-win-core-file-l2-1-0

MoveFileExW

api-ms-win-core-namedpipe-l1-1-0

PeekNamedPipe

api-ms-win-core-timezone-l1-1-0

SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetTimeZoneInformation

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

HeapReAlloc
HeapAlloc
HeapSize
GetProcessHeap
HeapFree

api-ms-win-core-datetime-l1-1-0

GetTimeFormatW
GetDateFormatW

Sections

.text
Size: 621KB - Virtual size: 620KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 222KB - Virtual size: 221KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 72KB - Virtual size: 94KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 27KB - Virtual size: 26KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

07cbfb6063dec836033569e5d69bad18

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

libcrypto

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-registry-l1-1-0

ws2_32

api-ms-win-core-processenvironment-l1-1-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-synch-l1-1-0

api-ms-win-security-base-l1-1-0

rpcrt4

api-ms-win-service-winsvc-l1-1-0

api-ms-win-service-core-l1-1-0

samcli

api-ms-win-security-sddl-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-libraryloader-l1-2-1

api-ms-win-security-lsalookup-ansi-l2-1-0

userenv

sspicli

api-ms-win-security-lsalookup-l2-1-1

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

api-ms-win-core-file-l1-1-0

api-ms-win-core-debug-l1-1-0

crypt32

api-ms-win-core-synch-l1-2-0

api-ms-win-core-synch-l1-2-1

api-ms-win-core-heap-l2-1-0

api-ms-win-core-file-l2-1-2

api-ms-win-core-console-l2-1-0

logoncli

wkscli

netutils

api-ms-win-security-provider-l1-1-0

api-ms-win-core-sysinfo-l1-2-0

api-ms-win-core-kernel32-legacy-l1-1-1

api-ms-win-core-kernel32-legacy-l1-1-0

api-ms-win-core-console-l1-1-0

api-ms-win-core-synch-ansi-l1-1-0

api-ms-win-core-io-l1-1-1

api-ms-win-security-sddl-ansi-l1-1-0

api-ms-win-core-io-l1-1-0

api-ms-win-core-util-l1-1-0

api-ms-win-core-localization-l1-2-0

user32

api-ms-win-core-rtlsupport-l1-1-0

api-ms-win-core-processthreads-l1-1-1

api-ms-win-core-profile-l1-1-0

api-ms-win-core-interlocked-l1-1-0

api-ms-win-core-file-l2-1-0

api-ms-win-core-namedpipe-l1-1-0

api-ms-win-core-timezone-l1-1-0

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

api-ms-win-core-datetime-l1-1-0

Sections

.text Size: 621KB - Virtual size: 620KB

.rdata Size: 222KB - Virtual size: 221KB

.data Size: 72KB - Virtual size: 94KB

.pdata Size: 27KB - Virtual size: 26KB

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

.reloc Size: 3KB - Virtual size: 2KB

.text
Size: 621KB - Virtual size: 620KB

.rdata
Size: 222KB - Virtual size: 221KB

.data
Size: 72KB - Virtual size: 94KB

.pdata
Size: 27KB - Virtual size: 26KB

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

.reloc
Size: 3KB - Virtual size: 2KB