Static task
static1
Behavioral task
behavioral1
Sample
esentutl.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
esentutl.exe
Resource
win10v2004-20230220-en
General
-
Target
esentutl.exe
-
Size
441KB
-
MD5
bad9577503b0fdf4aaebaceb9345b877
-
SHA1
032d537b0708efe508b6f34fce512de3fc01a25a
-
SHA256
22200d53a7b9cbe56389e7daeefb28d653125b7cb23e8c5d60a885f18e158e1f
-
SHA512
b05f7352ef2b654974f812943baaec7a14189f0c84f6d39ef76a29e108d81cefd5f4e2e65a6024a81a0b1ba73db08f6066bd35d2e366b85316df9de2d16db9a5
-
SSDEEP
6144:gOWL4JUAsIGb3DdhYvtw8s+2cw+mUYuwq+2vR+hUY3D8L2IdOWMyi+6WC8yWLPMc:3JUcGPgvBGGi7AClgXV3
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource esentutl.exe
Files
-
esentutl.exe.exe windows x86
c7c5a971b9d7b38ddb5066c26e725f14
Headers
DLL Characteristics
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
IMAGE_FILE_32BIT_MACHINE
Imports
msvcrt
__dllonexit
_unlock
_lock
_initterm
__setusermatherr
__p__fmode
_cexit
_exit
exit
_onexit
__set_app_type
__wgetmainargs
_amsg_exit
?terminate@@YAXXZ
_controlfp
_XcptFilter
_wtol
_wcsnicmp
strchr
_wfullpath
_wcsupr_s
_except_handler4_common
wcsstr
memcpy
swprintf_s
__iob_func
wcscpy_s
_getch
_snwscanf_s
_wsplitpath_s
_wmakepath_s
swscanf_s
wcstol
_vsnwprintf
malloc
free
wprintf
__p__commode
iswascii
fwprintf
isprint
_vsnprintf
strtoul
strcspn
strrchr
wcsncmp
wcsrchr
memmove_s
iswalpha
rand_s
wcspbrk
vprintf
strstr
wcschr
_purecall
_wcsicmp
wcscat_s
memset
esent
JetRestore2W
JetGetSystemParameterW
JetBeginSessionW
JetInit4W
JetGetLogFileInfoW
JetGetErrorInfoW
JetEndSession
JetSetSystemParameterA
JetGetDatabaseFileInfoW
JetTerm2
JetSetSystemParameterW
JetAttachDatabase3W
JetInit
JetDetachDatabaseW
JetTestHook
JetDBUtilitiesW
ntdll
RtlCaptureStackBackTrace
api-ms-win-core-file-l1-1-0
ReadFile
GetFinalPathNameByHandleW
FindVolumeClose
WriteFileGather
ReadFileScatter
FindNextVolumeW
FindFirstVolumeW
GetFileAttributesW
CreateFileW
SetFileValidData
DeleteFileW
SetFileInformationByHandle
WriteFile
FindClose
FlushFileBuffers
GetFullPathNameW
GetVolumePathNameW
GetFileInformationByHandle
GetDiskFreeSpaceExW
RemoveDirectoryW
GetDriveTypeW
GetDiskFreeSpaceW
GetFileAttributesExW
GetTempFileNameW
CreateDirectoryW
SetEndOfFile
GetVolumeInformationW
FindFirstFileW
GetFileSizeEx
FindNextFileW
SetFilePointerEx
api-ms-win-core-heap-l1-1-0
GetProcessHeap
HeapSetInformation
HeapDestroy
HeapAlloc
HeapFree
api-ms-win-core-io-l1-1-0
GetOverlappedResult
GetQueuedCompletionStatus
PostQueuedCompletionStatus
CreateIoCompletionPort
DeviceIoControl
api-ms-win-core-heap-l2-1-0
LocalAlloc
LocalFree
api-ms-win-core-errorhandling-l1-1-0
SetLastError
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetLastError
api-ms-win-core-handle-l1-1-0
SetHandleInformation
DuplicateHandle
CloseHandle
api-ms-win-core-sysinfo-l1-1-0
GlobalMemoryStatusEx
GetWindowsDirectoryW
GetVersionExW
GetSystemInfo
GetSystemTime
GetSystemWindowsDirectoryW
GetLocalTime
GetSystemTimeAsFileTime
GetTickCount
GetLogicalProcessorInformationEx
api-ms-win-core-libraryloader-l1-2-0
LoadLibraryExW
GetModuleFileNameW
GetModuleHandleW
FreeLibrary
LoadLibraryExA
GetProcAddress
api-ms-win-core-file-l2-1-0
MoveFileExW
GetFileInformationByHandleEx
CopyFileExW
api-ms-win-core-processthreads-l1-1-0
TlsGetValue
TlsFree
CreateProcessW
TlsAlloc
TlsSetValue
GetCurrentThread
GetExitCodeThread
TerminateProcess
GetCurrentProcess
ResumeThread
GetCurrentThreadId
GetCurrentProcessId
OpenThread
SetThreadPriorityBoost
SetThreadPriority
CreateThread
api-ms-win-core-synch-l1-2-0
WakeAllConditionVariable
Sleep
SleepConditionVariableSRW
api-ms-win-core-profile-l1-1-0
QueryPerformanceFrequency
QueryPerformanceCounter
api-ms-win-core-synch-l1-1-0
ReleaseSemaphore
InitializeCriticalSectionAndSpinCount
LeaveCriticalSection
SleepEx
SetEvent
WaitForSingleObject
ReleaseSRWLockExclusive
ReleaseMutex
EnterCriticalSection
WaitForSingleObjectEx
DeleteCriticalSection
AcquireSRWLockExclusive
CreateEventW
CreateMutexW
api-ms-win-core-memory-l1-1-0
UnmapViewOfFile
VirtualAlloc
VirtualFree
VirtualProtect
MapViewOfFileEx
CreateFileMappingW
VirtualQueryEx
api-ms-win-core-processthreads-l1-1-1
GetThreadIdealProcessorEx
IsProcessorFeaturePresent
api-ms-win-core-debug-l1-1-0
OutputDebugStringA
DebugBreak
api-ms-win-core-localization-l1-2-0
LCMapStringW
LCMapStringEx
FormatMessageW
api-ms-win-core-sysinfo-l1-2-0
GetNativeSystemInfo
api-ms-win-core-timezone-l1-1-0
FileTimeToSystemTime
SystemTimeToTzSpecificLocalTime
api-ms-win-core-datetime-l1-1-0
GetDateFormatW
GetTimeFormatW
api-ms-win-core-file-l1-2-0
GetVolumeNameForVolumeMountPointW
api-ms-win-core-file-l2-1-1
OpenFileById
api-ms-win-core-console-l1-1-0
SetConsoleCtrlHandler
api-ms-win-core-errorhandling-l1-1-3
SetThreadErrorMode
api-ms-win-core-privateprofile-l1-1-0
GetProfileStringW
api-ms-win-core-delayload-l1-1-0
DelayLoadFailureHook
Sections
.text Size: 401KB - Virtual size: 401KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 7KB - Virtual size: 11KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 7KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.didat Size: 512B - Virtual size: 8B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 21KB - Virtual size: 21KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ