$RNFF5V4[.]exe

Sharing

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General

Target

$RNFF5V4.exe
Size

10.9MB
MD5

7778159c22418aba244f447830953de8
SHA1

54a602ab8b48187bc52e3816054893860dbaf1c9
SHA256

0b20de008cbe76888b2651207536b6a01a1fbb9256031773b9de270dfb3a43c8
SHA512

27851f6827b3bfad21a7f9f6bf98dacee024efbdf03fc4885e7a15f8ef81ff8f379ba271d77147de51924d15826a4be8a605afc08760075af4aa1a44a0a9d646
SSDEEP

196608:b1RbcxhSfncS3J3w2XxffH94Ob6ve2BZiHhWWiVbMOVvu8ovcLFwia:ZRbESfTTcmGicWiVbMOVvuxvcL+ia

Score

7^/10

Malware Config

Signatures

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
sample	net_reactor

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
$RNFF5V4.exe

Files

$RNFF5V4.exe
.exe windows:6 windows x64 arch:x64

90d2464c05751e0163b327ef7e8a4518

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

PDB Paths

D:\a\_work\1\s\artifacts\obj\win-x64.Release\corehost\apphost\standalone\apphost.pdb

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

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

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

__stdio_common_vsprintf_s
setvbuf
__stdio_common_vswprintf
__acrt_iob_func
_set_fmode
fputwc
fputws
__stdio_common_vsnwprintf_s
_wfsopen
fflush
__p__commode
__stdio_common_vfwprintf

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

_callnewh
free
_set_new_mode
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

_unlock_locales
_lock_locales
localeconv
___lc_codepage_func
_configthreadlocale
__pctype_func
setlocale
___lc_locale_name_func
___mb_cur_max_func

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

__setusermatherr
frexp

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

_gmtime64_s
wcsftime
_time64

Sections

.text
Size: 99KB - Virtual size: 99KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 39KB - Virtual size: 39KB

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: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 840B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

90d2464c05751e0163b327ef7e8a4518

Headers

DLL Characteristics

File Characteristics

PDB Paths

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: 99KB - Virtual size: 99KB

.rdata Size: 39KB - Virtual size: 39KB

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

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

_RDATA Size: 512B - Virtual size: 348B

.reloc Size: 1024B - Virtual size: 840B

.rsrc Size: 6KB - Virtual size: 5KB

.text
Size: 99KB - Virtual size: 99KB

.rdata
Size: 39KB - Virtual size: 39KB

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

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

_RDATA
Size: 512B - Virtual size: 348B

.reloc
Size: 1024B - Virtual size: 840B

.rsrc
Size: 6KB - Virtual size: 5KB