NEAS[.]2023-09-08_c881379fbb5792d2a3847b3cf4716eed_ryuk_JC[.]exe

General

Target

NEAS.2023-09-08_c881379fbb5792d2a3847b3cf4716eed_ryuk_JC.exe
Size

110KB
MD5

c881379fbb5792d2a3847b3cf4716eed
SHA1

9c211d17e4ffe375cef81b54c83e0bc92ff929b3
SHA256

1bb25f8570d1e162ea6b2eab07ec8902d688e787b92aaa8cb947860873a45b55
SHA512

65c6a0d36246d9c908023ce003d619441c2b8af7cda64940d47f655a7decbb427493962e5e481a13e5150c1aeebf5692e79d940b0165aa8998f5823df77a2620
SSDEEP

1536:lV848f4HV5lkGcNAitq895ZjJg33D8AQ9YwmivQD8sWiR7cdQ1yFAPGSkZ+:CULcPtq8JJgnIYcwRqQwFAPGSkZ+

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
NEAS.2023-09-08_c881379fbb5792d2a3847b3cf4716eed_ryuk_JC.exe

Files

NEAS.2023-09-08_c881379fbb5792d2a3847b3cf4716eed_ryuk_JC.exe
.exe windows:5 windows x86

28345d761d94d617187a4e7bb791c4ef

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

LocalFree
HeapAlloc
HeapFree
GetProcessHeap
GetCurrentProcess
ExitProcess
GetCurrentThread
SetLastError
Sleep
LoadLibraryA
GetCommandLineW
GetTempPathW
GetVersionExW
CreateToolhelp32Snapshot
Process32FirstW
Process32NextW
GlobalAlloc
GetProcAddress
WinExec
FreeLibrary
DecodePointer
WriteConsoleW
SetFilePointerEx
GetConsoleMode
GetConsoleCP
FlushFileBuffers
HeapReAlloc
HeapSize
GetFileType
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetModuleHandleW
TerminateProcess
RaiseException
RtlUnwind
GetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
LoadLibraryExW
GetModuleHandleExW
GetStdHandle
WriteFile
GetModuleFileNameW
MultiByteToWideChar
WideCharToMultiByte
GetACP
GetStringTypeW
LCMapStringW
CloseHandle
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
CreateFileW

ws2_32

WSACleanup
WSAStartup
socket
setsockopt
sendto
inet_addr
htons
htonl
closesocket
bind

Sections

.text
Size: 64KB - Virtual size: 63KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 23KB - Virtual size: 23KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 21KB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.gfids
Size: 512B - Virtual size: 220B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

28345d761d94d617187a4e7bb791c4ef

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

ws2_32

Sections

.text Size: 64KB - Virtual size: 63KB

.rdata Size: 23KB - Virtual size: 23KB

.data Size: 21KB - Virtual size: 1.3MB

.gfids Size: 512B - Virtual size: 220B

.text
Size: 64KB - Virtual size: 63KB

.rdata
Size: 23KB - Virtual size: 23KB

.data
Size: 21KB - Virtual size: 1.3MB

.gfids
Size: 512B - Virtual size: 220B