Static task
static1
Behavioral task
behavioral1
Sample
last.dll
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
last.dll
Resource
win10-20231215-en
Behavioral task
behavioral3
Sample
last.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral4
Sample
last.dll
Resource
win11-20231215-en
General
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Target
last.dll
-
Size
2.1MB
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MD5
3fd11f70756c56c0f97e0f018252fb1e
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SHA1
bf6ab74bd4ad9aa8000a3eda644a4a08fb9a74b7
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SHA256
1453ee9e8e13017de9160e3cd453f462dfacbb8bd9d5f861c874f9f1e3977ae6
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SHA512
475a032fc7d60e2fb8ee9fb62af0a0bda1c92e45f11fb2e076403d6cd4bb77b2b508291f0b4986de058a44b04c9661598c25782a5f2b592f8e47ce00b8df66ed
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SSDEEP
24576:qHirvrcRYr/gACqiUWhNaflEnFr2EYuA8nlba2XAGh07g:Vrvrcar49qVlEnFr2EDnrhB
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource last.dll
Files
-
last.dll.dll windows:6 windows x64 arch:x64
58be1e9523344dbbc2a6ac50e19df4e5
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL
Imports
kernel32
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetModuleHandleW
GetCurrentProcess
TerminateProcess
RtlUnwindEx
InterlockedPushEntrySList
InterlockedFlushSList
GetLastError
SetLastError
EncodePointer
RaiseException
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
RtlPcToFileHeader
GetModuleFileNameW
GetModuleHandleExW
ExitProcess
HeapAlloc
HeapSize
HeapValidate
GetSystemInfo
GetCurrentThread
GetTempPathW
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
GetDateFormatW
GetTimeFormatW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
GetStdHandle
GetFileType
WriteFile
OutputDebugStringW
WriteConsoleW
SetConsoleCtrlHandler
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
GetProcessHeap
HeapFree
HeapReAlloc
HeapQueryInformation
GetStringTypeW
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
SetStdHandle
GetFileSizeEx
SetFilePointerEx
CloseHandle
ReadFile
ReadConsoleW
CreateFileW
RtlUnwind
Sections
.textbss Size: - Virtual size: 772KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.text Size: 1.7MB - Virtual size: 1.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 326KB - Virtual size: 325KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 44KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 123KB - Virtual size: 123KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.idata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 373B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
memcpy_ Size: 1024B - Virtual size: 828B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 1024B - Virtual size: 863B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 806B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 11KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ