General
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Target
Mesen.exe
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Size
32.9MB
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MD5
f560596d296f8d685efc8dc5cd2a2493
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SHA1
3e024db9def87ccffa19bfa300bf99945c47fea7
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SHA256
640b3bbc47023c82b4f044c2edcdd5d4af9309a65ddc2ad123309000998a5278
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SHA512
b5ed6a57e0950161ea6000c1a0acab41cd680f09db1b432ec0fb47babef39a39d38d3c58a1b63441734e510ba1117c151156ee7e00979d4f6cc6cb847afc6e2d
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SSDEEP
393216:9IUsPzThci2CsLVW4MCJL4+db07nvsfm8W5olGa4Yz:9IodCmW4MC1p90UdZlGgz
Malware Config
Signatures
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
resource yara_rule sample coreentity
Files
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Mesen.exe.exe windows 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: 95KB - Virtual size: 95KB
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: 28KB - Virtual size: 28KB
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