2024-09-15_aaf4d873ca399c52521a53d6b4cf6ab6_ryuk

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General

Target

2024-09-15_aaf4d873ca399c52521a53d6b4cf6ab6_ryuk
Size

6.3MB
MD5

aaf4d873ca399c52521a53d6b4cf6ab6
SHA1

584ddc449feb3a5df1952d46b307ba40299d4981
SHA256

fa6825aec1d86235d3fb701aa76900d664581d634a112be8954d493d36cde2c2
SHA512

a44849259fe31468edfa13779dd151f1769a43136dd65d08f172f8b0c90737cf4b2bfbea1f4ffd2c99a6c17a037099e1b41912021cb11f41819620e4a9f3100c
SSDEEP

196608:BmPng6GpwXtSVgwrn/bpYjYMHbri2bes:BunzGpwXtSVgwrn/bpYjYMHbbb

Score

3^/10

Malware Config

Signatures

Embeds OpenSSL 1 IoCs

Embeds OpenSSL, may be used to circumvent TLS interception.

resource	yara_rule
sample	embeds_openssl

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-09-15_aaf4d873ca399c52521a53d6b4cf6ab6_ryuk

Files

2024-09-15_aaf4d873ca399c52521a53d6b4cf6ab6_ryuk
.exe windows:6 windows x64 arch:x64

3e8597b78e247cce7a58049a0c61d6b8

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

AcquireSRWLockExclusive
AcquireSRWLockShared
CloseHandle
CloseThreadpoolTimer
CloseThreadpoolWait
CloseThreadpoolWork
CompareStringEx
CompareStringW
ConvertFiberToThread
ConvertThreadToFiberEx
CreateDirectoryW
CreateEventA
CreateEventExW
CreateEventW
CreateFiberEx
CreateFileW
CreateIoCompletionPort
CreateSemaphoreA
CreateSemaphoreExW
CreateSymbolicLinkW
CreateThread
CreateThreadpoolTimer
CreateThreadpoolWait
CreateThreadpoolWork
CreateWaitableTimerA
DecodePointer
DeleteCriticalSection
DeleteFiber
DeleteFileW
EncodePointer
EnterCriticalSection
EnumSystemFirmwareTables
EnumSystemLocalesW
ExitProcess
ExitThread
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FlushProcessWriteBuffers
FormatMessageA
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
FreeLibraryWhenCallbackReturns
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetConsoleWindow
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentProcessorNumber
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableA
GetEnvironmentVariableW
GetExitCodeThread
GetFileAttributesExW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetFileSizeEx
GetFileType
GetFullPathNameW
GetHandleInformation
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetLogicalProcessorInformation
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetNativeSystemInfo
GetOEMCP
GetProcAddress
GetProcessHeap
GetQueuedCompletionStatusEx
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDirectoryA
GetSystemDirectoryW
GetSystemInfo
GetSystemTime
GetSystemTimeAsFileTime
GetTempPathW
GetTickCount
GetTickCount64
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitOnceExecuteOnce
InitializeConditionVariable
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
InitializeSRWLock
InterlockedFlushSList
InterlockedPushEntrySList
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
LoadLibraryW
LocalFree
MoveFileExW
MultiByteToWideChar
OpenEventA
OutputDebugStringW
PeekNamedPipe
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleA
ReadConsoleW
ReadFile
ReleaseSRWLockExclusive
ReleaseSRWLockShared
ReleaseSemaphore
RemoveDirectoryW
ResetEvent
ResumeThread
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetConsoleMode
SetCurrentDirectoryW
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFileCompletionNotificationModes
SetFileInformationByHandle
SetFilePointerEx
SetHandleInformation
SetLastError
SetStdHandle
SetThreadpoolTimer
SetThreadpoolWait
SetUnhandledExceptionFilter
SetWaitableTimer
Sleep
SleepConditionVariableCS
SleepConditionVariableSRW
SleepEx
SubmitThreadpoolWork
SwitchToFiber
SwitchToThread
SystemTimeToFileTime
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
TryEnterCriticalSection
UnhandledExceptionFilter
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualFree
VirtualLock
VirtualProtect
VirtualProtectEx
WaitForMultipleObjects
WaitForMultipleObjectsEx
WaitForSingleObject
WaitForSingleObjectEx
WaitForThreadpoolTimerCallbacks
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile

user32

GetProcessWindowStation
GetUserObjectInformationW
MessageBoxW
ShowWindow

ws2_32

WSACleanup
WSACloseEvent
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAGetLastError
WSAIoctl
WSAPoll
WSAResetEvent
WSASetEvent
WSASetLastError
WSASocketA
WSAStartup
WSAWaitForMultipleEvents
__WSAFDIsSet
accept
bind
closesocket
connect
freeaddrinfo
getaddrinfo
gethostbyaddr
gethostbyname
gethostname
getnameinfo
getpeername
getservbyname
getservbyport
getsockname
getsockopt
htonl
htons
inet_addr
inet_ntoa
inet_ntop
inet_pton
ioctlsocket
listen
ntohl
ntohs
recv
recvfrom
select
send
sendto
setsockopt
shutdown
socket

advapi32

CryptAcquireContextW
CryptCreateHash
CryptDecrypt
CryptDestroyHash
CryptDestroyKey
CryptEncrypt
CryptEnumProvidersW
CryptExportKey
CryptGenRandom
CryptGetHashParam
CryptGetProvParam
CryptGetUserKey
CryptHashData
CryptImportKey
CryptReleaseContext
CryptSetHashParam
CryptSignHashW
DeregisterEventSource
InitializeSecurityDescriptor
OpenThreadToken
RegisterEventSourceW
ReportEventW
SetSecurityDescriptorDacl

crypt32

CertAddCertificateContextToStore
CertCloseStore
CertCreateCertificateChainEngine
CertDuplicateCertificateContext
CertEnumCertificatesInStore
CertFindCertificateInStore
CertFindExtension
CertFreeCertificateChain
CertFreeCertificateChainEngine
CertFreeCertificateContext
CertGetCertificateChain
CertGetCertificateContextProperty
CertGetNameStringW
CertOpenStore
CertOpenSystemStoreW
CryptDecodeObjectEx
CryptQueryObject
CryptStringToBinaryW
PFXImportCertStore

iphlpapi

GetAdaptersAddresses
if_indextoname

bcrypt

BCryptGenRandom

Sections

.text
Size: 4.9MB - Virtual size: 4.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.1MB - Virtual size: 1.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 34KB - Virtual size: 53KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 239KB - Virtual size: 239KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.00cfg
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gxfg
Size: 58KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.retplne
Size: 512B - Virtual size: 152B

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 47KB - Virtual size: 46KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3e8597b78e247cce7a58049a0c61d6b8

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

ws2_32

advapi32

crypt32

iphlpapi

bcrypt

Sections

.text Size: 4.9MB - Virtual size: 4.9MB

.rdata Size: 1.1MB - Virtual size: 1.1MB

.data Size: 34KB - Virtual size: 53KB

.pdata Size: 239KB - Virtual size: 239KB

.00cfg Size: 512B - Virtual size: 56B

.gxfg Size: 58KB - Virtual size: 57KB

.retplne Size: 512B - Virtual size: 152B

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

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

_RDATA Size: 512B - Virtual size: 348B

.reloc Size: 47KB - Virtual size: 46KB

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

.text
Size: 4.9MB - Virtual size: 4.9MB

.rdata
Size: 1.1MB - Virtual size: 1.1MB

.data
Size: 34KB - Virtual size: 53KB

.pdata
Size: 239KB - Virtual size: 239KB

.00cfg
Size: 512B - Virtual size: 56B

.gxfg
Size: 58KB - Virtual size: 57KB

.retplne
Size: 512B - Virtual size: 152B

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

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

_RDATA
Size: 512B - Virtual size: 348B

.reloc
Size: 47KB - Virtual size: 46KB

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