Static task
static1
Behavioral task
behavioral1
Sample
4bz376Sz.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
4bz376Sz.exe
Resource
win10-20231025-en
General
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Target
4bz376Sz.exe
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Size
1.1MB
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MD5
4d440b0342029504e1be19b10d29e91a
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SHA1
f79b6f584a7b68504842901187c316a6812f89db
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SHA256
f399c2f3b14df883cefd8278302e6a0e1917b1647beaae07a77dd5c56950b487
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SHA512
c3a44fed280a2eff2e4a6b55d0f4db88bfdd1053eaa07b96477a739ccfdc539a7efb73b96b8ca598d11831a7273fdd1ba890e6557eaf1ce5828917b2841eefb1
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SSDEEP
12288:prB58gmnfkPenJ2U7vq/wMh5Sunrv90pxf1xh9uuSVKxDY80:xRmfkPenJ2U7vqvrnrvwF0O
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 4bz376Sz.exe
Files
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4bz376Sz.exe.exe windows:6 windows x86
520ab4e8f9944dbd318db6f456d2b2f0
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
user32
GetComboBoxInfo
advapi32
InitializeAcl
kernel32
CreateFileW
IsDebuggerPresent
CloseHandle
WaitForSingleObjectEx
Sleep
SwitchToThread
GetCurrentThreadId
GetExitCodeThread
GetNativeSystemInfo
FormatMessageA
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
QueryPerformanceCounter
QueryPerformanceFrequency
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
TryAcquireSRWLockExclusive
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableSRW
LocalFree
GetLocaleInfoEx
EncodePointer
DecodePointer
MultiByteToWideChar
WideCharToMultiByte
LCMapStringEx
SetFileInformationByHandle
GetTempPathW
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
InitOnceExecuteOnce
SleepConditionVariableCS
CreateEventExW
CreateSemaphoreExW
FlushProcessWriteBuffers
GetCurrentProcessorNumber
GetSystemTimeAsFileTime
GetTickCount64
FreeLibraryWhenCallbackReturns
CreateThreadpoolWork
SubmitThreadpoolWork
CloseThreadpoolWork
CreateThreadpoolTimer
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
CreateThreadpoolWait
SetThreadpoolWait
CloseThreadpoolWait
GetModuleHandleW
GetProcAddress
GetFileInformationByHandleEx
CreateSymbolicLinkW
GetStringTypeW
CompareStringEx
GetCPInfo
IsProcessorFeaturePresent
GetCurrentProcessId
InitializeSListHead
WriteConsoleW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
GetCurrentProcess
TerminateProcess
HeapSize
RaiseException
RtlUnwind
InterlockedPushEntrySList
InterlockedFlushSList
GetLastError
SetLastError
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
CreateThread
ExitThread
ResumeThread
FreeLibraryAndExitThread
GetModuleHandleExW
GetStdHandle
WriteFile
GetModuleFileNameW
ExitProcess
GetCommandLineA
GetCommandLineW
GetCurrentThread
HeapFree
HeapAlloc
GetDateFormatW
GetTimeFormatW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
GetFileType
SetConsoleCtrlHandler
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
ReadFile
GetFileSizeEx
SetFilePointerEx
ReadConsoleW
HeapReAlloc
GetTimeZoneInformation
OutputDebugStringW
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
GetProcessHeap
Sections
.text Size: 716KB - Virtual size: 716KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 102KB - Virtual size: 101KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 9KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: 263KB - Virtual size: 263KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.00cfg Size: 512B - Virtual size: 270B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 22KB - Virtual size: 22KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ