VRCFX[.]exe | Triage

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General

Target

VRCFX.exe
Size

169.0MB
MD5

20337020a3aff74c808bdcc7053d65c5
SHA1

ebfffdd81b22452734fd74210a279b9762af1cb1
SHA256

de2b39eb4d86e1a53f93223a15e6a616f3c3f8b98ebdd8a47c2b733a211c7070
SHA512

c2e34955dcc1e543deda58c74603704f5fb37e62a434f1ee50ed246673b48549ffda4c8ed0542176220859203417182f142ec6759922d371deb2bef0c6a3de3c
SSDEEP

786432:1j21qHrqDNRDA+yC0umqNxUXHwHx05CYGDCvB8nhIB72K8H6zC:1jgqHryyUm6OAy5GwB8nOt2t

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
VRCFX.exe

Files

VRCFX.exe
.exe windows:6 windows x64 arch:x64

fc8835619571d0409b7078347ad40d0a

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

advapi32

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

ole32

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

oleaut32

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

user32

MessageBoxW
LoadStringW

shell32

ShellExecuteW

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

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

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

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

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

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

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

_itow_s
_ltow_s
_wtoi
strtoull
strtoul
_wcstoui64
atol
_atoi64
wcstoul

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

_set_new_mode
free
calloc
malloc
realloc

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

qsort

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

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

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

_gmtime64_s
wcsftime
_time64

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

getenv

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

_wrename
_lock_file
_wremove
_unlock_file

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

__pctype_func
___lc_locale_name_func
___lc_codepage_func
___mb_cur_max_func
setlocale
_unlock_locales
_configthreadlocale
_lock_locales

Exports

Exports

CLRJitAttachState
DotNetRuntimeInfo
MetaDataGetDispenser
g_CLREngineMetrics
g_dacTable

Sections

.text
Size: 6.1MB - Virtual size: 6.1MB

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: 128KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 216KB - Virtual size: 215KB

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: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1.4MB - Virtual size: 1.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 31KB - Virtual size: 30KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

fc8835619571d0409b7078347ad40d0a

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-filesystem-l1-1-0

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

Exports

Exports

Sections

.text Size: 6.1MB - Virtual size: 6.1MB

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

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

.data Size: 28KB - Virtual size: 128KB

.pdata Size: 216KB - Virtual size: 215KB

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

Section Size: 512B - Virtual size: 8B

_RDATA Size: 512B - Virtual size: 500B

.rsrc Size: 1.4MB - Virtual size: 1.4MB

.reloc Size: 31KB - Virtual size: 30KB

.text
Size: 6.1MB - Virtual size: 6.1MB

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

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

.data
Size: 28KB - Virtual size: 128KB

.pdata
Size: 216KB - Virtual size: 215KB

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

Section
Size: 512B - Virtual size: 8B

_RDATA
Size: 512B - Virtual size: 500B

.rsrc
Size: 1.4MB - Virtual size: 1.4MB

.reloc
Size: 31KB - Virtual size: 30KB