Static task
static1
Behavioral task
behavioral1
Sample
2024-02-20_400a2b9fce0951d0a79d22252c306f63_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-20_400a2b9fce0951d0a79d22252c306f63_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-20_400a2b9fce0951d0a79d22252c306f63_ryuk
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Size
119KB
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MD5
400a2b9fce0951d0a79d22252c306f63
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SHA1
4390822a42d8ce0ce84df75d51ecbecaca2b6222
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SHA256
a3202e5d69f7c52c74a8b1993568f93bb93d03b39912d79d8d5d7644aa5c7abe
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SHA512
93893e62b5a72ba3f9877aeb1a2b1617d739b3b3653ec61e179315ac89d2dcf5a6c971e37d42b6726a256334ed3c6951306dca801f86d8fc0649889be428df34
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SSDEEP
1536:rqAhvfnqnuTccXVrYn6CSM2SsSgtZNn7n2NBCdQyhioGMsW6wd7h9dleheMdgn3:rt9fRTcfnDjTktZZ7mC+zPa1Eh7gn
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-20_400a2b9fce0951d0a79d22252c306f63_ryuk
Files
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2024-02-20_400a2b9fce0951d0a79d22252c306f63_ryuk.exe windows:6 windows x64 arch:x64
32eedafa61fd1593c116f6adc2713d42
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
ConnectNamedPipe
GetComputerNameW
GetProcAddress
CreateThread
LoadLibraryW
CloseHandle
GetCurrentThread
GetLastError
CreateEventW
GetSystemDirectoryW
WaitForSingleObject
CreateNamedPipeW
GetCurrentProcess
CreateFileW
HeapReAlloc
HeapSize
WriteConsoleW
SetFilePointerEx
GetProcessHeap
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
GetStdHandle
WriteFile
GetModuleFileNameW
MultiByteToWideChar
WideCharToMultiByte
ExitProcess
GetModuleHandleExW
GetCommandLineA
GetCommandLineW
GetACP
HeapFree
HeapAlloc
CompareStringW
LCMapStringW
GetFileType
FlushFileBuffers
GetConsoleCP
GetConsoleMode
GetStringTypeW
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
RaiseException
advapi32
RevertToSelf
SetTokenInformation
LookupPrivilegeNameW
CreateProcessWithTokenW
OpenProcessToken
ImpersonateNamedPipeClient
InitializeSecurityDescriptor
CreateProcessAsUserW
DuplicateTokenEx
OpenThreadToken
GetTokenInformation
AdjustTokenPrivileges
rpcrt4
UuidToStringW
UuidCreate
NdrClientCall2
userenv
DestroyEnvironmentBlock
CreateEnvironmentBlock
Sections
.text Size: 66KB - Virtual size: 65KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 42KB - Virtual size: 42KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 160B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ