a[.]exe | Triage

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General

Target

a.exe
Size

4.8MB
MD5

e8a09fb33b24f67814795c0525a57e45
SHA1

2809c8144a9f393dc22aaba8159b380ed4368b60
SHA256

14e5b399cad29fd6487650c1009c02bf07313226189ba9ea98a84451afb84d7d
SHA512

4450f3fde0cfd3ab4ba37e925a4892f8ab9f9c3ae4f446c0c0aa2af2a1795b9d4bcb6d41527b39077875605d805bfb756f4fa0dc8187d6fbe6531eb47f263c6a
SSDEEP

98304:L8/kJbJDGSdmWaeGzkbqrR7uO3kHQHgHCPfF72yt+7o7W9XXnBz8:L8/k3DGc6QqrZHgHC3LtvS9HnB

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
a.exe

Files

a.exe
.exe windows:6 windows x64 arch:x64

30f731cca9cc3ab87b86f180728ab4b5

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

kernel32

ReleaseSRWLockShared
RtlCaptureContext
ReleaseMutex
FreeLibrary
GetCurrentProcess
CreateMutexA
LoadLibraryA
CreateThread
AcquireSRWLockShared
IsProcessorFeaturePresent
WaitForSingleObjectEx
SetLastError
GetCurrentDirectoryW
WriteConsoleW
MultiByteToWideChar
GetConsoleMode
QueryPerformanceFrequency
TryAcquireSRWLockExclusive
GetCurrentThread
GetProcAddress
FormatMessageW
WaitForMultipleObjectsEx
WaitForSingleObject
SetEvent
CreateEventA
ReleaseSRWLockExclusive
SwitchToThread
AcquireSRWLockExclusive
GetModuleHandleW
HeapReAlloc
HeapFree
GetProcessHeap
HeapAlloc
SetThreadStackGuarantee
AddVectoredExceptionHandler
GetLastError
GetStdHandle
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlVirtualUnwind
CloseHandle
QueryPerformanceCounter
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetEnvironmentVariableW
GetModuleHandleA
AttachConsole
RtlLookupFunctionEntry
Sleep

user32

EndDeferWindowPos
DeferWindowPos
BeginDeferWindowPos
DispatchMessageA
DefWindowProcA
PeekMessageA
SetTimer
SystemParametersInfoA
CreateWindowExA
RegisterClassA
LoadIconW
TranslateMessage

gdi32

CreateSolidBrush

ole32

CoCreateInstance
CoTaskMemFree
PropVariantClear
CoUninitialize
CoInitializeEx

ntdll

NtWriteFile
RtlNtStatusToDosError

advapi32

SystemFunction036

bcrypt

BCryptGenRandom

oleaut32

GetErrorInfo
SysFreeString
SysStringLen

vcruntime140

memcmp
__current_exception_context
memcpy
memset
memmove
__CxxFrameHandler3
__C_specific_handler
__current_exception

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

powf
expf
floorf
sin
floor
atan
cos
log2
cosf
log10
pow
round
__setusermatherr
exp2

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

_set_app_type
_seh_filter_exe
_configure_narrow_argv
_initialize_narrow_environment
_get_initial_narrow_environment
_initterm
_initterm_e
exit
_exit
__p___argc
_crt_atexit
_register_thread_local_exe_atexit_callback
__p___argv
terminate
_initialize_onexit_table
_register_onexit_function
_c_exit
_cexit

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

_set_fmode
__p__commode

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

_configthreadlocale

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

free
_set_new_mode

Sections

.text
Size: 451KB - Virtual size: 450KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 512KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 13KB - Virtual size: 13KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 86KB - Virtual size: 85KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

30f731cca9cc3ab87b86f180728ab4b5

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

ole32

ntdll

advapi32

bcrypt

oleaut32

vcruntime140

api-ms-win-crt-math-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

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

Sections

.text Size: 451KB - Virtual size: 450KB

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

.data Size: 512B - Virtual size: 512KB

.pdata Size: 13KB - Virtual size: 13KB

.rsrc Size: 86KB - Virtual size: 85KB

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

.text
Size: 451KB - Virtual size: 450KB

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

.data
Size: 512B - Virtual size: 512KB

.pdata
Size: 13KB - Virtual size: 13KB

.rsrc
Size: 86KB - Virtual size: 85KB

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