asyncrat | VRF[.]exe

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General

Target

VRF.exe
Size

204.4MB
MD5

9ecf18739345f43966a06664c3206801
SHA1

cfb799795be4e9b48794d6a5a511050b390148f9
SHA256

7d78d922988050eaa95258d00e5b0b668cce6958269f2a431b85e0a1bd4ce17c
SHA512

517d7a5428caf2c9a67b582848f00b4352f3e8f560e9275dacdca90d2770077a96e24062cc9e595b3edd94e822693cb1fffa397cf42d3b47749eac2489326fbe
SSDEEP

786432:DcfVF6N+mgErPd1cpfkjy0Ds1Ffmd9gFuQ1F4yQF7X69vu8uq/F8qVKb5KNpoHbT:wfz6NbgEcs4uvgFv12yQFuFN/JGMEEW

Score

10^/10

rat asyncrat

Malware Config

Signatures

Async RAT payload 1 IoCs

rat

resource	yara_rule
sample	asyncrat

Asyncrat family
asyncrat

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
VRF.exe

Files

VRF.exe
.exe windows:6 windows x64

0256a58fd9b0438015663c91d138cf1e

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

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
WaitForSingleObject
CreateMutexW
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
InitializeCriticalSectionAndSpinCount
CloseHandle
TlsSetValue
TlsGetValue
GetSystemInfo
GetCurrentProcess
OutputDebugStringW
IsDebuggerPresent
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
InitializeCriticalSection
GetCommandLineW
GetProcAddress
GetModuleHandleExW
SetErrorMode
FlushProcessWriteBuffers
SetLastError
GetLastError
WideCharToMultiByte
ReleaseSemaphore
DebugBreak
DecodePointer
InitializeCriticalSectionEx
RtlVirtualUnwind
IsProcessorFeaturePresent
RtlUnwindEx
EncodePointer
TlsFree
RtlPcToFileHeader
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableSRW
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
TryAcquireSRWLockExclusive
GetExitCodeThread
GetStringTypeW
CreateFileMappingA

advapi32

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

ole32

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

oleaut32

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

user32

MessageBoxW
LoadStringW

shell32

ShellExecuteW

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

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

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

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

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

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

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

atol
_atoi64
strtoull
wcstoul
_wcstoui64
_itow_s
_wtoi
_ltow_s
strtoul

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

realloc
free
_set_new_mode
malloc
calloc

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

qsort

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

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

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

_time64
wcsftime
_gmtime64_s

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

getenv

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

setlocale
__pctype_func
___lc_locale_name_func
___lc_codepage_func
___mb_cur_max_func
localeconv
_configthreadlocale
_lock_locales
_unlock_locales

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

_unlock_file
_wremove
_wrename
_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: 120KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 217KB - Virtual size: 216KB

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: 1.4MB - Virtual size: 1.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

0256a58fd9b0438015663c91d138cf1e

Headers

DLL Characteristics

File Characteristics

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: 120KB

.pdata Size: 217KB - Virtual size: 216KB

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

Section Size: 512B - Virtual size: 8B

_RDATA Size: 77KB - Virtual size: 77KB

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

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

.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: 120KB

.pdata
Size: 217KB - Virtual size: 216KB

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

Section
Size: 512B - Virtual size: 8B

_RDATA
Size: 77KB - Virtual size: 77KB

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

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