2024-04-09_b1efec7fd66e3cdf22d623b31afc5696_ryuk

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General

Target

2024-04-09_b1efec7fd66e3cdf22d623b31afc5696_ryuk
Size

1.0MB
MD5

b1efec7fd66e3cdf22d623b31afc5696
SHA1

e64adb7371ac8c114f24b58c3fead99c40491140
SHA256

7798150c93f0e92b622b996eba88ea954a3f78dc8048a4628969dff48e1947bb
SHA512

433b1209c874b1a4f2a5ae5ae444cc1008bc280cb149bce0630d4bd3d394507c51a065d024d6ff3485608f92f314522ea0302f92c632cf347322a8cbfa363560
SSDEEP

24576:yWvc/jDV5RAa7JOj5qoowK9oM4PVbctd:yWvQja+c5qoowJxVbc

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-09_b1efec7fd66e3cdf22d623b31afc5696_ryuk

Files

2024-04-09_b1efec7fd66e3cdf22d623b31afc5696_ryuk
.exe windows:6 windows x64 arch:x64

c067401cbd3f126f1190c6fb3d8055bd

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
CloseHandle
CompareStringEx
CompareStringW
CreateEventW
CreateFileW
CreateThread
DecodePointer
DeleteCriticalSection
DeleteFileW
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
ExitThread
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindNextFileW
FlushFileBuffers
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetDateFormatW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableA
GetFileAttributesExW
GetFileInformationByHandle
GetFileSizeEx
GetFileType
GetFullPathNameW
GetLastError
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDirectoryW
GetSystemTimeAsFileTime
GetTickCount
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
LoadLibraryW
MoveFileExW
MultiByteToWideChar
PeekNamedPipe
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleW
ReadFile
ReleaseSRWLockExclusive
ResetEvent
RtlAddFunctionTable
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
SleepEx
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualProtect
WaitForMultipleObjects
WaitForSingleObjectEx
WideCharToMultiByte
WriteConsoleW
WriteFile

advapi32

AdjustTokenPrivileges
CryptAcquireContextW
CryptCreateHash
CryptDestroyHash
CryptDestroyKey
CryptEncrypt
CryptGetHashParam
CryptHashData
CryptImportKey
CryptReleaseContext
LookupPrivilegeValueW
OpenProcessToken

ws2_32

WSACleanup
WSACloseEvent
WSACreateEvent
WSAEnumNetworkEvents
WSAEventSelect
WSAGetLastError
WSAIoctl
WSAResetEvent
WSASetLastError
WSAStartup
WSAWaitForMultipleEvents
__WSAFDIsSet
accept
bind
closesocket
connect
freeaddrinfo
getaddrinfo
gethostname
getpeername
getsockname
getsockopt
htonl
htons
inet_ntop
inet_pton
ioctlsocket
listen
ntohs
recv
recvfrom
select
send
sendto
setsockopt
socket

crypt32

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

bcrypt

BCryptGenRandom

Sections

.text
Size: 685KB - Virtual size: 685KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 214KB - Virtual size: 213KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 8KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 33KB - Virtual size: 32KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.00cfg
Size: 512B - Virtual size: 40B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.KrmpSec
Size: 77KB - Virtual size: 76KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.gehcont
Size: 512B - Virtual size: 92B

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

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

_RDATA
Size: 512B - Virtual size: 244B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 424B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

c067401cbd3f126f1190c6fb3d8055bd

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

ws2_32

crypt32

bcrypt

Sections

.text Size: 685KB - Virtual size: 685KB

.rdata Size: 214KB - Virtual size: 213KB

.data Size: 8KB - Virtual size: 15KB

.pdata Size: 33KB - Virtual size: 32KB

.00cfg Size: 512B - Virtual size: 40B

.KrmpSec Size: 77KB - Virtual size: 76KB

.gehcont Size: 512B - Virtual size: 92B

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

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

_RDATA Size: 512B - Virtual size: 244B

.rsrc Size: 512B - Virtual size: 424B

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 685KB - Virtual size: 685KB

.rdata
Size: 214KB - Virtual size: 213KB

.data
Size: 8KB - Virtual size: 15KB

.pdata
Size: 33KB - Virtual size: 32KB

.00cfg
Size: 512B - Virtual size: 40B

.KrmpSec
Size: 77KB - Virtual size: 76KB

.gehcont
Size: 512B - Virtual size: 92B

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

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

_RDATA
Size: 512B - Virtual size: 244B

.rsrc
Size: 512B - Virtual size: 424B

.reloc
Size: 4KB - Virtual size: 4KB