NEAS[.]2023-09-27_55dd8d456932091cc430b5da38acd8a1_ryuk[.]exe

Sharing

Copy URL Twitter E-mail

General

Target

NEAS.2023-09-27_55dd8d456932091cc430b5da38acd8a1_ryuk.exe
Size

88KB
MD5

55dd8d456932091cc430b5da38acd8a1
SHA1

e50e1b18a370de78aaf4dcf3e41b4118766540aa
SHA256

6b6e0bba26724dcbbada3fac8e397ffb2787fa1ae972837ce811b26cd064535d
SHA512

3933e04f99ac625b46f33670ea5a027626c1a410378234cc7dccb1091675547898143cd70fb63daa1151accbbb08d640015f80baf5dea5dd5206804aafb0a43e
SSDEEP

1536:b4WgDMh1WtolY6iNWQVv0vM1EX+SnLgebsWzAdc9dl2bmIRT5hipe:bkDMh1W4RgTvQMCXlLn9qUQbmIR

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
NEAS.2023-09-27_55dd8d456932091cc430b5da38acd8a1_ryuk.exe

Files

NEAS.2023-09-27_55dd8d456932091cc430b5da38acd8a1_ryuk.exe
.exe windows:5 windows x64

ab1591f0be5313440c8beebac66da905

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

GetLastError
GetModuleFileNameA
WriteConsoleW
FlushFileBuffers
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RaiseException
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
GetStdHandle
WriteFile
MultiByteToWideChar
WideCharToMultiByte
ExitProcess
GetModuleHandleExW
GetACP
HeapFree
HeapAlloc
GetStringTypeW
GetFileType
CloseHandle
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
LCMapStringW
SetStdHandle
GetProcessHeap
HeapSize
HeapReAlloc
GetConsoleCP
GetConsoleMode
SetFilePointerEx
CreateFileW

advapi32

RegCloseKey
RegQueryValueExA
RegOpenKeyExA

shell32

ShellExecuteA

Sections

.text
Size: 43KB - Virtual size: 43KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 35KB - Virtual size: 34KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.gfids
Size: 512B - Virtual size: 168B

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

Sharing

General

Malware Config

Signatures

Files

ab1591f0be5313440c8beebac66da905

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

shell32

Sections

.text Size: 43KB - Virtual size: 43KB

.rdata Size: 35KB - Virtual size: 34KB

.data Size: 2KB - Virtual size: 6KB

.pdata Size: 3KB - Virtual size: 3KB

.gfids Size: 512B - Virtual size: 168B

.rsrc Size: 512B - Virtual size: 480B

.reloc Size: 2KB - Virtual size: 1KB

.text
Size: 43KB - Virtual size: 43KB

.rdata
Size: 35KB - Virtual size: 34KB

.data
Size: 2KB - Virtual size: 6KB

.pdata
Size: 3KB - Virtual size: 3KB

.gfids
Size: 512B - Virtual size: 168B

.rsrc
Size: 512B - Virtual size: 480B

.reloc
Size: 2KB - Virtual size: 1KB