userinit[.]exe

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General

Target

userinit.exe
Size

128KB
MD5

09ebda6f8c2d064d03d55665b88e60ae
SHA1

b81ecd619ba5e850d943ff183112f55edf28c63f
SHA256

c49e740fe3d9265766b626c204eb55360de09ee3a421ed03bb2e3f7e52dfd6c9
SHA512

d0e6c77e1943287984af0b9e6685d479b1fa28aa7773802515d26135b16b6d410d1f88ee1c2d0d36f69856c411227ec9ca9118dc4fdcebebe1a065b5cf31cb95
SSDEEP

1536:Yxuty2eDRrXQXCQn+9GW+EUs0xQhkIbgTjzSdVTxUs18bTh9xxn4tOnG:bteRrACVfs6VgWfTz8bDr4wG

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
userinit.exe

Files

userinit.exe
.exe windows:10 windows x64 arch:x64

dafdfeea533e98f48223b56b19d509d5

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

userinit.pdb

Imports

ntdll

RtlVirtualUnwind
RtlCaptureContext
RtlLookupFunctionEntry
NtQueryInformationProcess
RtlGetActiveConsoleId

api-ms-win-core-file-l1-1-0

CompareFileTime
GetFileAttributesExW

api-ms-win-core-processenvironment-l1-1-0

SetEnvironmentVariableW
ExpandEnvironmentStringsW
SearchPathW
GetEnvironmentVariableW

api-ms-win-core-registry-l1-1-0

RegQueryInfoKeyW
RegOpenKeyExW
RegGetValueW
RegQueryValueExW
RegCloseKey
RegEnumValueW
RegCreateKeyExW
RegOpenCurrentUser

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter
SetLastError
GetLastError

api-ms-win-core-processthreads-l1-1-0

GetCurrentThread
TerminateProcess
GetCurrentProcess
GetCurrentThreadId
CreateThread
CreateProcessW
ProcessIdToSessionId
GetStartupInfoW
SetThreadPriority
GetCurrentProcessId

api-ms-win-eventing-classicprovider-l1-1-0

RegisterTraceGuidsW
GetTraceEnableLevel
UnregisterTraceGuids
GetTraceEnableFlags
GetTraceLoggerHandle
TraceMessage

api-ms-win-core-synch-l1-1-0

OpenSemaphoreW
WaitForSingleObjectEx
AcquireSRWLockExclusive
CreateMutexExW
AcquireSRWLockShared
ReleaseMutex
InitializeCriticalSectionEx
ReleaseSemaphore
EnterCriticalSection
CreateEventExW
ReleaseSRWLockShared
ReleaseSRWLockExclusive
CreateSemaphoreExW
CreateEventW
OpenEventW
DeleteCriticalSection
WaitForSingleObject
InitializeCriticalSectionAndSpinCount
ResetEvent
SetEvent
LeaveCriticalSection

api-ms-win-core-heap-l2-1-0

LocalFree
LocalAlloc

api-ms-win-core-string-l2-1-0

CharNextW

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime
GetSystemDirectoryW

logoncli

DsGetDcNameW

api-ms-win-core-synch-l1-2-0

InitOnceComplete
InitOnceBeginInitialize
Sleep

api-ms-win-core-handle-l1-1-0

CloseHandle

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

HeapAlloc
HeapSetInformation
HeapFree
GetProcessHeap

api-ms-win-core-libraryloader-l1-2-0

FreeLibrary
GetProcAddress
LoadLibraryExW
LoadStringW
FindStringOrdinal
GetModuleHandleExW
GetModuleFileNameW
GetModuleHandleW
GetModuleFileNameA

api-ms-win-core-com-l1-1-0

CoTaskMemFree
CoTaskMemAlloc

api-ms-win-eventing-provider-l1-1-0

EventSetInformation
EventUnregister
EventWriteTransfer
EventRegister

api-ms-win-core-psapi-l1-1-0

K32GetModuleFileNameExW

api-ms-win-core-threadpool-l1-2-0

WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
SetThreadpoolTimer
CreateThreadpoolTimer

api-ms-win-core-processthreads-l1-1-1

IsProcessorFeaturePresent
OpenProcess

api-ms-win-core-localization-l1-2-0

FormatMessageW

api-ms-win-core-debug-l1-1-0

IsDebuggerPresent
OutputDebugStringW
DebugBreak

api-ms-win-core-registry-l1-1-1

RegSetKeyValueW

user32

GetShellWindow
GetWindowThreadProcessId

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

_c_exit
_initterm_e
_register_thread_local_exe_atexit_callback
_initterm

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

__CxxFrameHandler4
__std_terminate
wcsrchr
_o___p__commode
_o___std_exception_copy
_o___std_exception_destroy
_o___stdio_common_vsnprintf_s
_o___stdio_common_vswprintf
_o__cexit
_o__configthreadlocale
_o__configure_narrow_argv
_o__crt_atexit
_o__errno
_o__exit
_o__get_narrow_winmain_command_line
_o__initialize_narrow_environment
_o__initialize_onexit_table
_o__invalid_parameter_noinfo
_CxxThrowException
memmove
_o__purecall
_o__register_onexit_function
_o__seh_filter_exe
_o__set_app_type
_o__set_fmode
_o__set_new_mode
_o__wcsicmp
_o__wtoi
_o_exit
_o_free
_o_terminate
__C_specific_handler
__current_exception
__current_exception_context
memcmp
memcpy

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

memset

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-interlocked-l1-1-0

InitializeSListHead

api-ms-win-core-delayload-l1-1-1

ResolveDelayLoadedAPI

api-ms-win-core-delayload-l1-1-0

DelayLoadFailureHook

api-ms-win-core-apiquery-l1-1-0

ApiSetQueryApiSetPresence

Sections

.text
Size: 76KB - Virtual size: 72KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 28KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 4KB - Virtual size: 200B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 232B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

dafdfeea533e98f48223b56b19d509d5

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntdll

api-ms-win-core-file-l1-1-0

api-ms-win-core-processenvironment-l1-1-0

api-ms-win-core-registry-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-eventing-classicprovider-l1-1-0

api-ms-win-core-synch-l1-1-0

api-ms-win-core-heap-l2-1-0

api-ms-win-core-string-l2-1-0

api-ms-win-core-sysinfo-l1-1-0

logoncli

api-ms-win-core-synch-l1-2-0

api-ms-win-core-handle-l1-1-0

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

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-com-l1-1-0

api-ms-win-eventing-provider-l1-1-0

api-ms-win-core-psapi-l1-1-0

api-ms-win-core-threadpool-l1-2-0

api-ms-win-core-processthreads-l1-1-1

api-ms-win-core-localization-l1-2-0

api-ms-win-core-debug-l1-1-0

api-ms-win-core-registry-l1-1-1

user32

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

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

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

api-ms-win-core-profile-l1-1-0

api-ms-win-core-interlocked-l1-1-0

api-ms-win-core-delayload-l1-1-1

api-ms-win-core-delayload-l1-1-0

api-ms-win-core-apiquery-l1-1-0

Sections

.text Size: 76KB - Virtual size: 72KB

.rdata Size: 28KB - Virtual size: 24KB

.data Size: 4KB - Virtual size: 3KB

.pdata Size: 4KB - Virtual size: 3KB

.didat Size: 4KB - Virtual size: 200B

.rsrc Size: 4KB - Virtual size: 1KB

.reloc Size: 4KB - Virtual size: 232B

.text
Size: 76KB - Virtual size: 72KB

.rdata
Size: 28KB - Virtual size: 24KB

.data
Size: 4KB - Virtual size: 3KB

.pdata
Size: 4KB - Virtual size: 3KB

.didat
Size: 4KB - Virtual size: 200B

.rsrc
Size: 4KB - Virtual size: 1KB

.reloc
Size: 4KB - Virtual size: 232B