83d195db636d5a35cdb754a5d2856a1ce9a06b45a1fd761f557d4c44c6f2fcee

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General

Target

83d195db636d5a35cdb754a5d2856a1ce9a06b45a1fd761f557d4c44c6f2fcee
Size

189.8MB
MD5

1fb380ea6ad5a8a2293a506c8f08b02a
SHA1

4738a815efb500d2c29b01454b563664e7e6f17e
SHA256

83d195db636d5a35cdb754a5d2856a1ce9a06b45a1fd761f557d4c44c6f2fcee
SHA512

540fc980f29f538cda76e47e1107d7f05d3ecd4d031a41fe2706fc550e4b9657da3ede7895a80c398cbefe033be1af8ed4e035b58aa7c0736836f38e8eebbbb1
SSDEEP

3145728:rdOitUlrS3cbYyxmt/Slnfrupc/QEwL46e0V:8itUxucMyxy/onfauHwL463

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

Files

83d195db636d5a35cdb754a5d2856a1ce9a06b45a1fd761f557d4c44c6f2fcee
.exe windows:6 windows x64 arch:x64

337a0d50f062760655a13fcd6b7c33f9

Code Sign

28:fc:3e:ed:89:78:ef:b5:44:23:55:4f:55:89:0b:c1
Certificate

Issuer

CN=BOI-XPC\\Admin

Not Before

28/03/2024, 15:15

Not After

28/03/2025, 21:15

Subject

CN=BOI-XPC\\Admin

e3:d4:65:c1:fd:92:36:78:e3:83:08:33:8c:c5:80:cd:87:58:5d:18:e4:34:2f:94:60:0e:f1:03:68:f6:75:b5
Signer

Actual PE Digest

e3:d4:65:c1:fd:92:36:78:e3:83:08:33:8c:c5:80:cd:87:58:5d:18:e4:34:2f:94:60:0e:f1:03:68:f6:75:b5

Digest Algorithm

sha256

PE Digest Matches

true

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\coreclr\windows.x64.Release\Corehost.Static\singlefilehost.pdb

Imports

kernel32

RaiseException
FreeLibrary
RaiseFailFastException
GetExitCodeProcess
TerminateProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
AddVectoredExceptionHandler
MultiByteToWideChar
GetTickCount
GetCurrentProcessId
FlushInstructionCache
QueryPerformanceFrequency
QueryPerformanceCounter
RtlLookupFunctionEntry
LocateXStateFeature
RtlDeleteFunctionTable
InterlockedPushEntrySList
InterlockedFlushSList
InitializeSListHead
GetTickCount64
DuplicateHandle
QueueUserAPC
WaitForSingleObjectEx
SetThreadPriority
GetThreadPriority
ResumeThread
GetCurrentThreadId
TlsAlloc
GetCurrentThread
CreateThread
GetModuleHandleW
WaitForMultipleObjectsEx
SignalObjectAndWait
RtlCaptureContext
SetThreadStackGuarantee
VirtualQuery
WriteFile
GetStdHandle
GetConsoleOutputCP
MapViewOfFileEx
UnmapViewOfFile
GetStringTypeExW
SetEvent
GetCurrentProcessorNumber
GlobalMemoryStatusEx
CreateIoCompletionPort
PostQueuedCompletionStatus
GetQueuedCompletionStatus
InterlockedPopEntrySList
GetCurrentProcessorNumberEx
ExitProcess
Sleep
CreateMemoryResourceNotification
GetProcessAffinityMask
SetThreadIdealProcessorEx
GetThreadIdealProcessorEx
GetLargePageMinimum
VirtualUnlock
GetLogicalProcessorInformation
SetThreadGroupAffinity
SetThreadAffinityMask
IsProcessInJob
QueryInformationJobObject
K32GetProcessMemoryInfo
VirtualAlloc
VirtualFree
VirtualProtect
SleepEx
SwitchToThread
InitializeContext
SetXStateFeaturesMask
RtlRestoreContext
CloseThreadpoolTimer
CreateThreadpoolTimer
SetThreadpoolTimer
ReadFile
GetFileSize
GetEnvironmentVariableW
SetEnvironmentVariableW
CreateEventW
ResetEvent
CreateSemaphoreExW
ReleaseSemaphore
WaitForSingleObject
ReleaseMutex
GetThreadContext
SuspendThread
SetThreadContext
GetEnabledXStateFeatures
CopyContext
WerRegisterRuntimeExceptionModule
RtlInstallFunctionTableCallback
GetSystemDefaultLCID
GetUserDefaultLCID
RtlUnwind
LoadLibraryExW
HeapAlloc
HeapFree
GetProcessHeap
HeapCreate
HeapDestroy
GetEnvironmentStringsW
FreeEnvironmentStringsW
FormatMessageW
GetACP
LCMapStringEx
LocalFree
VerSetConditionMask
VerifyVersionInfoW
QueryThreadCycleTime
VirtualAllocExNuma
GetNumaProcessorNodeEx
GetNumaHighestNodeNumber
GetLogicalProcessorInformationEx
GetThreadGroupAffinity
GetSystemTimes
GetProcessGroupAffinity
CreateFileMappingW
GetSystemTimeAsFileTime
GetModuleFileNameW
CreateProcessW
GetCPInfo
CreateFileW
GetFileAttributesExW
GetTempPathW
GetCurrentDirectoryW
GetFullPathNameW
LoadLibraryExA
OutputDebugStringA
OpenEventW
ExitThread
HeapReAlloc
CreateNamedPipeA
WaitForMultipleObjects
DisconnectNamedPipe
CreateFileA
CancelIoEx
GetOverlappedResult
ConnectNamedPipe
FlushFileBuffers
SetFilePointer
MapViewOfFile
GetActiveProcessorGroupCount
GetSystemTime
SetConsoleCtrlHandler
GetLocaleInfoEx
GetUserDefaultLocaleName
RtlAddFunctionTable
LoadLibraryW
CreateDirectoryW
RemoveDirectoryW
GetFileSizeEx
FindFirstFileExW
FindNextFileW
FindClose
LoadLibraryA
IsWow64Process
EncodePointer
GetEnvironmentVariableA
DecodePointer
ReleaseSRWLockExclusive
CloseHandle
TlsSetValue
TlsGetValue
GetSystemInfo
GetCurrentProcess
OutputDebugStringW
IsDebuggerPresent
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
InitializeCriticalSection
GetCommandLineW
GetProcAddress
GetModuleHandleExW
SetErrorMode
FlushProcessWriteBuffers
SetLastError
GetLastError
WideCharToMultiByte
CreateMutexW
DebugBreak
InitializeCriticalSectionEx
GetStringTypeW
GetExitCodeThread
TryAcquireSRWLockExclusive
RtlPcToFileHeader
TlsFree
InitializeCriticalSectionAndSpinCount
AcquireSRWLockExclusive
WakeAllConditionVariable
SleepConditionVariableSRW
RtlVirtualUnwind
IsProcessorFeaturePresent
RtlUnwindEx
CreateFileMappingA

advapi32

RegGetValueW
SetKernelObjectSecurity
GetSidSubAuthorityCount
GetSidSubAuthority
GetTokenInformation
DeregisterEventSource
ReportEventW
RegisterEventSourceW
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
EventRegister
AdjustTokenPrivileges
OpenProcessToken
LookupPrivilegeValueW
SetThreadToken
RevertToSelf
OpenThreadToken
EventWriteTransfer
EventWrite

ole32

CoCreateGuid
CoTaskMemAlloc
CoInitializeEx
CoUninitialize
CoReleaseMarshalData
IIDFromString
CLSIDFromProgID
CoRegisterInitializeSpy
CoMarshalInterface
CoUnmarshalInterface
CoGetObjectContext
CoGetContextToken
CoGetClassObject
CoCreateFreeThreadedMarshaler
CreateStreamOnHGlobal
StringFromGUID2
CoGetMarshalSizeMax
CoWaitForMultipleHandles
CoRevokeInitializeSpy
CoTaskMemFree

oleaut32

QueryPathOfRegTypeLi
LoadTypeLibEx
SafeArrayGetVartype
VariantChangeType
VariantChangeTypeEx
VariantClear
VariantInit
VarCyFromDec
SafeArrayAllocDescriptorEx
GetRecordInfoFromTypeInfo
SafeArraySetRecordInfo
SafeArrayAllocData
SafeArrayDestroy
SysStringByteLen
SysAllocStringByteLen
SafeArrayCreateVector
SafeArrayPutElement
LoadRegTypeLi
CreateErrorInfo
SafeArrayGetDim
SysAllocStringLen
SysAllocString
SysStringLen
SetErrorInfo
GetErrorInfo
SysFreeString
SafeArrayGetElemsize
SafeArrayGetLBound

user32

MessageBoxW
LoadStringW

shell32

ShellExecuteW

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

strcat_s
strcpy_s
_strnicmp
_wcsicmp
wcsncpy_s
wcsncmp
iswupper
towlower
isalpha
isdigit
wcstok_s
strncpy_s
strcspn
strncmp
strlen
isupper
strtok_s
isspace
_wcsdup
_strdup
_wcsnicmp
islower
wcscpy_s
strcmp
wcsnlen
__strncnt
strnlen
toupper
iswascii
towupper
wcscat_s
tolower
_stricmp
iswspace
strncat_s
wcsncat_s

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

_set_fmode
fwrite
__stdio_common_vsnwprintf_s
__stdio_common_vswprintf
__stdio_common_vfwprintf
__stdio_common_vsprintf_s
fputwc
__p__commode
_flushall
fputws
_get_stream_buffer_pointers
_fseeki64
fread
fseek
fsetpos
ungetc
fgetpos
__acrt_iob_func
fflush
ftell
fgetc
fputc
_wfsopen
_fileno
_dup
setvbuf
_setmode
__stdio_common_vfprintf
fputs
__stdio_common_vsnprintf_s
__stdio_common_vsscanf
fgets
_wfopen
fclose
fopen

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

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

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

wcstoul
_wtoi
_wcstoui64
_atoi64
_ltow_s
strtoul
atol
_itow_s
strtoull

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

realloc
calloc
free
malloc
_set_new_mode

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

qsort

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

coshf
expf
cosh
cosf
cos
ceilf
ceil
atanf
atan2f
atan2
log10
asinf
asin
acosf
acos
_copysign
_isnan
_finite
log2
atanh
acosh
cbrt
asinh
asinhf
atanhf
cbrtf
acoshf
modf
log2f
modff
floor
logf
floorf
log
fma
fmodf
pow
_fdopen
powf
sin
_copysignf
_isnanf
trunc
truncf
ilogb
ilogbf
fmaf
sinf
exp
sinh
log10f
frexp
sinhf
sqrt
sqrtf
tan
fmod
tanf
tanh
atan
tanhf
__setusermatherr

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

_gmtime64_s
_time64
wcsftime

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

getenv

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

__pctype_func
_lock_locales
_configthreadlocale
___lc_codepage_func
___mb_cur_max_func
setlocale
_unlock_locales
localeconv
___lc_locale_name_func

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

_wremove
_wrename
_unlock_file
_lock_file

Exports

Exports

CLRJitAttachState
DotNetRuntimeInfo
MetaDataGetDispenser
g_CLREngineMetrics
g_dacTable

Sections

.text
Size: 5.9MB - Virtual size: 5.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.CLR_UEF
Size: 512B - Virtual size: 221B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.5MB - Virtual size: 1.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 28KB - Virtual size: 121KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 211KB - Virtual size: 211KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Section
Size: 512B - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 77KB - Virtual size: 77KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 30KB - Virtual size: 29KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

337a0d50f062760655a13fcd6b7c33f9

Code Sign

28:fc:3e:ed:89:78:ef:b5:44:23:55:4f:55:89:0b:c1Certificate

e3:d4:65:c1:fd:92:36:78:e3:83:08:33:8c:c5:80:cd:87:58:5d:18:e4:34:2f:94:60:0e:f1:03:68:f6:75:b5Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

ole32

oleaut32

user32

shell32

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

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

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

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 5.9MB - Virtual size: 5.9MB

.CLR_UEF Size: 512B - Virtual size: 221B

.rdata Size: 1.5MB - Virtual size: 1.5MB

.data Size: 28KB - Virtual size: 121KB

.pdata Size: 211KB - Virtual size: 211KB

.didat Size: 512B - Virtual size: 56B

Section Size: 512B - Virtual size: 8B

_RDATA Size: 77KB - Virtual size: 77KB

.rsrc Size: 1.3MB - Virtual size: 1.3MB

.reloc Size: 30KB - Virtual size: 29KB

28:fc:3e:ed:89:78:ef:b5:44:23:55:4f:55:89:0b:c1
Certificate

e3:d4:65:c1:fd:92:36:78:e3:83:08:33:8c:c5:80:cd:87:58:5d:18:e4:34:2f:94:60:0e:f1:03:68:f6:75:b5
Signer

.text
Size: 5.9MB - Virtual size: 5.9MB

.CLR_UEF
Size: 512B - Virtual size: 221B

.rdata
Size: 1.5MB - Virtual size: 1.5MB

.data
Size: 28KB - Virtual size: 121KB

.pdata
Size: 211KB - Virtual size: 211KB

.didat
Size: 512B - Virtual size: 56B

Section
Size: 512B - Virtual size: 8B

_RDATA
Size: 77KB - Virtual size: 77KB

.rsrc
Size: 1.3MB - Virtual size: 1.3MB

.reloc
Size: 30KB - Virtual size: 29KB