McDecryptor[.]exe

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General

Target

McDecryptor.exe
Size

8.1MB
MD5

c1b9023d54bc58eac0a47fe6f9dc9b43
SHA1

81465c3e907add65dff683f5a5a409a759d959fb
SHA256

8a4d632aaba81cd208a9d3a0ff32a503c70bdbc43c41b07805da992434c9c675
SHA512

376b85706e8f525e0aaf54ca166370dc438a24d935fb096d3e6d75f7ce590d32a8a21f9733f438ed567867a519c56bfd1a82738aa0be87a5c533e6659bf9a6db
SSDEEP

98304:bFPrCUj/X4sWoXqgguqcN3Wi95vtPq71Zs:RPmi/X4gXqDQly

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
McDecryptor.exe

Files

McDecryptor.exe
.exe windows:6 windows x64 arch:x64

82e5e806136262fab1c98a12b90e9962

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

advapi32

RegOpenKeyExW
RegQueryValueExW
RegCloseKey
OpenProcessToken
GetTokenInformation
OpenThreadToken
RevertToSelf
ImpersonateLoggedOnUser
RegEnumKeyExW
RegEnumValueW
AdjustTokenPrivileges
LookupPrivilegeValueW

bcrypt

BCryptGetProperty
BCryptGenRandom
BCryptHashData
BCryptDestroyHash
BCryptCreateHash
BCryptImportKey
BCryptImportKeyPair
BCryptOpenAlgorithmProvider
BCryptDestroyKey
BCryptSetProperty
BCryptEncrypt
BCryptDecrypt
BCryptCloseAlgorithmProvider
BCryptExportKey
BCryptFinishHash

crypt32

CertFreeCertificateChainEngine
CertCloseStore
PFXImportCertStore
PFXExportCertStore
CryptFindOIDInfo
CryptQueryObject
CryptMsgGetParam
CryptMsgClose
CryptImportPublicKeyInfoEx2
CryptFormatObject
CryptDecodeObject
CertVerifyTimeValidity
CertSetCertificateContextProperty
CertSerializeCertificateStoreElement
CertSaveStore
CertOpenStore
CertFreeCertificateContext
CertVerifyCertificateChainPolicy
CertEnumCertificatesInStore
CertDuplicateCertificateContext
CertGetCertificateContextProperty
CertAddCertificateContextToStore
CertAddCertificateLinkToStore
CertControlStore
CertCreateCertificateChainEngine
CertFindCertificateInStore
CertFindExtension
CertFreeCertificateChain
CertGetCertificateChain
CertGetIntendedKeyUsage
CertGetNameStringW
CertGetValidUsages
CertNameToStrW

iphlpapi

GetAdaptersAddresses
GetPerAdapterInfo
GetNetworkParams
if_nametoindex

kernel32

RtlUnwindEx
RtlPcToFileHeader
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
IsDebuggerPresent
InitializeSListHead
GetCurrentProcessId
IsProcessorFeaturePresent
RaiseException
SetUnhandledExceptionFilter
SetLastError
GetLastError
QueryPerformanceCounter
GetTickCount64
FormatMessageW
LocalFree
CancelIoEx
DuplicateHandle
CloseHandle
GetCurrentThread
GetCurrentProcess
CloseThreadpoolIo
MultiByteToWideChar
GetStdHandle
RaiseFailFastException
TzSpecificLocalTimeToSystemTime
SystemTimeToFileTime
FileTimeToSystemTime
GetSystemTime
GetCalendarInfoEx
CompareStringOrdinal
CompareStringEx
FindNLSStringEx
GetLocaleInfoEx
ResolveLocaleName
GetUserPreferredUILanguages
FindStringOrdinal
WaitForSingleObject
Sleep
DeleteCriticalSection
EnterCriticalSection
SleepConditionVariableCS
LeaveCriticalSection
WakeConditionVariable
InitializeCriticalSection
InitializeConditionVariable
CreateThreadpoolTimer
SetThreadpoolTimer
WaitForMultipleObjectsEx
GetCurrentThreadId
CreateThreadpoolWait
SetThreadpoolWait
CloseThreadpoolWait
CreateThreadpoolWork
CloseThreadpoolWork
SubmitThreadpoolWork
QueryPerformanceFrequency
GetFullPathNameW
GetLongPathNameW
GetCPInfo
WideCharToMultiByte
LocalAlloc
GetConsoleOutputCP
GetProcAddress
LocaleNameToLCID
LCMapStringEx
EnumTimeFormatsEx
EnumCalendarInfoExEx
CancelSynchronousIo
CreateIoCompletionPort
CreateDirectoryW
CreateFileW
CreateThreadpoolIo
StartThreadpoolIo
CancelThreadpoolIo
DeleteFileW
DeleteVolumeMountPointW
DeviceIoControl
ExpandEnvironmentStringsW
FindNextFileW
FindClose
FindFirstFileExW
FlushFileBuffers
FreeLibrary
GetFileAttributesExW
GetFileInformationByHandleEx
GetFileType
GetModuleFileNameW
GetOverlappedResult
GetSystemDirectoryW
LoadLibraryExW
OpenThread
QueryUnbiasedInterruptTime
ReadFile
RemoveDirectoryW
SetCurrentDirectoryW
SetFileInformationByHandle
SetThreadErrorMode
CreateThread
ResumeThread
GetThreadPriority
SetThreadPriority
GetDynamicTimeZoneInformation
GetTimeZoneInformation
WriteFile
GetCurrentProcessorNumberEx
SetEvent
ResetEvent
CreateEventExW
GetEnvironmentVariableW
GetCPInfoExW
GetConsoleMode
ReadConsoleW
WriteConsoleW
GetConsoleCP
FlushProcessWriteBuffers
WaitForSingleObjectEx
RtlVirtualUnwind
RtlCaptureContext
RtlRestoreContext
AddVectoredExceptionHandler
FlsAlloc
FlsGetValue
FlsSetValue
CreateEventW
TerminateProcess
SwitchToThread
SuspendThread
GetThreadContext
SetThreadContext
FlushInstructionCache
VirtualAlloc
VirtualProtect
VirtualFree
QueryInformationJobObject
GetModuleHandleW
GetModuleHandleExW
GetProcessAffinityMask
InitializeContext
GetEnabledXStateFeatures
SetXStateFeaturesMask
VirtualQuery
InitializeCriticalSectionEx
GetSystemTimeAsFileTime
DebugBreak
SleepEx
GlobalMemoryStatusEx
GetSystemInfo
GetLogicalProcessorInformation
GetLogicalProcessorInformationEx
GetLargePageMinimum
VirtualUnlock
VirtualAllocExNuma
IsProcessInJob
GetNumaHighestNodeNumber
GetProcessGroupAffinity
K32GetProcessMemoryInfo
EncodePointer
DecodePointer
HeapCreate
HeapDestroy
HeapAlloc
HeapFree
GetProcessHeap
UnhandledExceptionFilter
RtlLookupFunctionEntry

ncrypt

NCryptSetProperty
NCryptOpenKey
NCryptDeleteKey
NCryptOpenStorageProvider
NCryptGetProperty
NCryptImportKey
NCryptFreeObject

ole32

CoInitializeEx
CoUninitialize
CoWaitForMultipleHandles
CoCreateGuid
CoTaskMemFree
CoTaskMemAlloc
CoGetApartmentType

user32

LoadStringW

ws2_32

GetNameInfoW
WSACleanup
WSAStartup
WSASocketW
WSASend
GetAddrInfoW
WSAGetOverlappedResult
WSAConnect
shutdown
setsockopt
send
FreeAddrInfoExW
WSARecv
GetAddrInfoExW
WSAEventSelect
WSAIoctl
bind
closesocket
getpeername
getsockopt
ioctlsocket
recv
select
FreeAddrInfoW

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

free
_set_new_mode
calloc
_callnewh
malloc

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

__setusermatherr
ceil
cos
floor
pow
sin
tan
modf

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

strcmp
_stricmp
strncpy_s
strcpy_s
wcsncmp

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

strtoull

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

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

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

__acrt_iob_func
_set_fmode
__stdio_common_vsprintf_s
__stdio_common_vsscanf
__stdio_common_vfprintf
__p__commode

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

_configthreadlocale

Exports

Exports

DotNetRuntimeDebugHeader

Sections

.text
Size: 529KB - Virtual size: 529KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.managed
Size: 4.3MB - Virtual size: 4.3MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

hydrated
Size: - Virtual size: 1.8MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 2.9MB - Virtual size: 2.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 29KB - Virtual size: 151KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 326KB - Virtual size: 326KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

82e5e806136262fab1c98a12b90e9962

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

bcrypt

crypt32

iphlpapi

kernel32

ncrypt

ole32

user32

ws2_32

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 529KB - Virtual size: 529KB

.managed Size: 4.3MB - Virtual size: 4.3MB

hydrated Size: - Virtual size: 1.8MB

.rdata Size: 2.9MB - Virtual size: 2.9MB

.data Size: 29KB - Virtual size: 151KB

.pdata Size: 326KB - Virtual size: 326KB

_RDATA Size: 512B - Virtual size: 500B

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

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 529KB - Virtual size: 529KB

.managed
Size: 4.3MB - Virtual size: 4.3MB

hydrated
Size: - Virtual size: 1.8MB

.rdata
Size: 2.9MB - Virtual size: 2.9MB

.data
Size: 29KB - Virtual size: 151KB

.pdata
Size: 326KB - Virtual size: 326KB

_RDATA
Size: 512B - Virtual size: 500B

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

.reloc
Size: 4KB - Virtual size: 4KB