Static task
static1
Behavioral task
behavioral1
Sample
ByteCodeGenerator.exe
Resource
win10v2004-20231023-en
General
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Target
ByteCodeGenerator.exe
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Size
108KB
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MD5
561dbf78a8824ccd4ac1eb9dd8e1f932
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SHA1
460573f225823c3fc395c717f559e4fb91d27563
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SHA256
b9b08210a4d823ce9abff48e46a7e9044258756a1f526f17eb2d821f107c2cde
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SHA512
bdb88d38862353c7bcdf680a1e7a4544bf0239a2973f9c0c4508bd9f9ea9905ea00c27950dfd7f354cf97fbb9381c96f8e773ae5d08305286031438ef0f5ce68
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SSDEEP
1536:9f9koGXVlhVfaJwKp8DNDEF/ZAxCmVr3B9NBJdx8eEzhSVoTpiQFzrfscnmeJ:9f9kFAwW8NDEF/CVB+rAoTpt5si
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource ByteCodeGenerator.exe
Files
-
ByteCodeGenerator.exe.exe windows:10 windows x64 arch:x64
b702fd7ffebc67519666bfb64ba98381
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
api-ms-win-crt-runtime-l1-1-0
_c_exit
_register_thread_local_exe_atexit_callback
_initterm_e
_initterm
api-ms-win-crt-private-l1-1-0
_o__errno
_o__exit
_o__get_initial_wide_environment
_o__initialize_onexit_table
_o__initialize_wide_environment
_o__invalid_parameter_noinfo
_o__purecall
_o__register_onexit_function
_o__seh_filter_exe
_o__set_app_type
_o__set_fmode
_o__set_new_mode
memmove
_o_exit
_o_free
_o_malloc
_o_memcpy_s
_o_terminate
__C_specific_handler
__CxxFrameHandler3
__current_exception
__current_exception_context
_CxxThrowException
_o__cexit
_o__callnewh
_o___stdio_common_vsnwprintf_s
_o___stdio_common_vsnprintf_s
_o___std_exception_destroy
_o___std_exception_copy
_o___p__commode
_o___p___wargv
_o___p___argc
_o__crt_atexit
_o__configure_wide_argv
_o__configthreadlocale
__CxxFrameHandler4
__std_terminate
memcmp
memcpy
api-ms-win-crt-string-l1-1-0
memset
ntdll
RtlEnumerateGenericTableWithoutSplayingAvl
RtlEnumerateGenericTableAvl
RtlReportException
RtlNumberGenericTableElementsAvl
RtlInitUnicodeString
RtlCompareUnicodeString
RtlReleaseSRWLockShared
RtlAcquireSRWLockShared
RtlReleaseSRWLockExclusive
RtlInitializeGenericTableAvl
RtlAcquireSRWLockExclusive
RtlInsertElementGenericTableAvl
RtlDeleteElementGenericTableAvl
NtQuerySystemInformation
RtlVirtualUnwind
RtlLookupElementGenericTableAvl
RtlLookupFunctionEntry
RtlCaptureContext
RtlUnsubscribeWnfNotificationWaitForCompletion
NtSetInformationThread
RtlSubscribeWnfStateChangeNotification
RtlConvertSidToUnicodeString
RtlFreeUnicodeString
NtQueryInformationThread
urlmon
CreateUri
CoInternetParseIUri
api-ms-win-security-base-l1-1-0
ImpersonateLoggedOnUser
RevertToSelf
GetTokenInformation
rpcrt4
RpcServerUnregisterIf
RpcServerUseProtseqEpW
RpcServerInqBindings
RpcServerRegisterIf3
RpcMgmtStopServerListening
RpcServerListen
NdrServerCall2
NdrServerCallAll
RpcBindingVectorFree
UuidFromStringW
RpcObjectSetType
RpcEpRegisterW
api-ms-win-core-synch-l1-2-0
InitOnceComplete
InitOnceBeginInitialize
api-ms-win-core-registry-l1-1-0
RegCloseKey
RegOpenKeyExW
RegQueryValueExW
RegGetValueW
api-ms-win-core-processthreads-l1-1-0
OpenThreadToken
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
TerminateProcess
ExitProcess
OpenProcessToken
GetCurrentThread
api-ms-win-security-sddl-l1-1-0
ConvertStringSecurityDescriptorToSecurityDescriptorW
api-ms-win-core-com-l1-1-0
CoInitializeEx
CoUninitialize
CoTaskMemAlloc
CoCreateInstance
CoTaskMemFree
api-ms-win-eventing-provider-l1-1-0
EventRegister
EventUnregister
EventSetInformation
EventWriteTransfer
api-ms-win-core-localization-l1-2-0
FormatMessageW
api-ms-win-core-errorhandling-l1-1-0
RaiseException
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetLastError
SetLastError
api-ms-win-core-file-l1-1-0
WriteFile
GetFileAttributesExW
GetFileSizeEx
SetEndOfFile
SetFilePointer
CreateFileW
api-ms-win-core-debug-l1-1-0
IsDebuggerPresent
DebugBreak
OutputDebugStringW
api-ms-win-core-handle-l1-1-0
DuplicateHandle
CloseHandle
api-ms-win-core-heap-l2-1-0
LocalFree
api-ms-win-core-processthreads-l1-1-1
IsProcessorFeaturePresent
api-ms-win-core-profile-l1-1-0
QueryPerformanceCounter
api-ms-win-core-sysinfo-l1-1-0
GetSystemTimeAsFileTime
api-ms-win-core-interlocked-l1-1-0
InitializeSListHead
api-ms-win-core-libraryloader-l1-2-0
GetModuleHandleExW
GetProcAddress
FreeLibrary
LoadLibraryExW
GetModuleHandleW
GetModuleFileNameA
api-ms-win-eventing-classicprovider-l1-1-0
TraceMessage
oleaut32
SysFreeString
api-ms-win-core-memory-l1-1-0
MapViewOfFile
UnmapViewOfFile
CreateFileMappingW
api-ms-win-core-string-l1-1-0
CompareStringOrdinal
api-ms-win-core-synch-l1-1-0
ReleaseSRWLockShared
AcquireSRWLockShared
DeleteCriticalSection
CreateMutexExW
AcquireSRWLockExclusive
WaitForSingleObjectEx
ReleaseMutex
WaitForSingleObject
ReleaseSemaphore
CreateSemaphoreExW
ReleaseSRWLockExclusive
InitializeCriticalSectionEx
OpenSemaphoreW
EnterCriticalSection
LeaveCriticalSection
api-ms-win-core-heap-l1-1-0
HeapAlloc
GetProcessHeap
HeapFree
api-ms-win-core-io-l1-1-0
DeviceIoControl
api-ms-win-core-threadpool-l1-2-0
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CreateThreadpoolTimer
CloseThreadpoolTimer
Sections
.text Size: 64KB - Virtual size: 63KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 24KB - Virtual size: 22KB
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
.rsrc Size: 4KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 4KB - Virtual size: 388B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ