YiunHa[.]exe | Triage

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General

Target

YiunHa.exe
Size

146KB
MD5

dd2dc3b73372c49252738b5f282503a2
SHA1

9f5c5bce0910ad988e482397a51726954e20f1ac
SHA256

dea9b46e547485dfe88d03e5d6e0309ecb06fbd212034c21a709f442bbc7028f
SHA512

34bbba3424aa71aa2c6e0361fbb330fa8c1591eb3b8bd9dcd83162f8555e18ecce05c33b371c101f87088e8a943c19ea7e61a38d10d2d037511485abcb61d493
SSDEEP

3072:vczkitvo4BpYN/6mBPry8TXROLdW5m4mURQ9OOGI0kd:vA4NCmBPry/N2cOOJ

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
YiunHa.exe

Files

YiunHa.exe
.exe windows:6 windows x64 arch:x64

6dbf27f4c70fe2c8ed3e0122ba75d641

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

kernel32

FindNextFileW
GetCurrentProcess
GetModuleHandleExW
GetModuleFileNameW
LeaveCriticalSection
InitializeCriticalSection
GetEnvironmentVariableW
FindClose
MultiByteToWideChar
GetLastError
GetFileAttributesExW
GetFullPathNameW
GetProcAddress
DeleteCriticalSection
WideCharToMultiByte
IsWow64Process
LoadLibraryExW
FreeLibrary
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
EnterCriticalSection
FindFirstFileExW
OutputDebugStringW
LoadLibraryA
GetModuleHandleW
InitializeCriticalSectionAndSpinCount
SetLastError
RaiseException
RtlPcToFileHeader
RtlUnwindEx
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
LCMapStringEx
DecodePointer
EncodePointer
InitializeCriticalSectionEx
GetStringTypeW

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW
RegGetValueW
DeregisterEventSource
RegisterEventSourceW
ReportEventW
RegCloseKey

api-ms-win-crt-runtime-l1-1-0

_exit
__p___argc
_initterm_e
_initterm
_get_initial_wide_environment
_invalid_parameter_noinfo_noreturn
_initialize_wide_environment
_configure_wide_argv
_initialize_onexit_table
_set_app_type
__p___wargv
_seh_filter_exe
_register_onexit_function
_cexit
terminate
_errno
exit
abort
_crt_atexit
_c_exit
_register_thread_local_exe_atexit_callback

api-ms-win-crt-stdio-l1-1-0

setvbuf
fflush
_wfopen
__stdio_common_vswprintf
__stdio_common_vfwprintf
_set_fmode
__stdio_common_vsprintf_s
__acrt_iob_func
fputwc
fputws
__p__commode

api-ms-win-crt-heap-l1-1-0

_set_new_mode
_callnewh
free
malloc
calloc

api-ms-win-crt-string-l1-1-0

wcsnlen
strcpy_s
_wcsdup
strcspn
wcsncmp
toupper

api-ms-win-crt-convert-l1-1-0

_wtoi
wcstoul

api-ms-win-crt-locale-l1-1-0

setlocale
___lc_locale_name_func
localeconv
_unlock_locales
_lock_locales
___mb_cur_max_func
_configthreadlocale
__pctype_func
___lc_codepage_func

api-ms-win-crt-math-l1-1-0

frexp
__setusermatherr

api-ms-win-crt-time-l1-1-0

_gmtime64_s
_time64
wcsftime

Sections

.text
Size: 97KB - Virtual size: 96KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 37KB - Virtual size: 36KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 244B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 792B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

6dbf27f4c70fe2c8ed3e0122ba75d641

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

shell32

advapi32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-time-l1-1-0

Sections

.text Size: 97KB - Virtual size: 96KB

.rdata Size: 37KB - Virtual size: 36KB

.data Size: 2KB - Virtual size: 5KB

.pdata Size: 5KB - Virtual size: 5KB

_RDATA Size: 512B - Virtual size: 244B

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

.reloc Size: 1024B - Virtual size: 792B

.text
Size: 97KB - Virtual size: 96KB

.rdata
Size: 37KB - Virtual size: 36KB

.data
Size: 2KB - Virtual size: 5KB

.pdata
Size: 5KB - Virtual size: 5KB

_RDATA
Size: 512B - Virtual size: 244B

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

.reloc
Size: 1024B - Virtual size: 792B