fsutilext[.]dll

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General

Target

fsutilext.dll
Size

44KB
MD5

68d67b4afb76e866e458f6f552a63344
SHA1

ffb79f0d1c2d0c87a7f4e0822fc81b8744a61bb2
SHA256

2bb2a9b1a1f661b8acc9d01b5df04d127c08fb186a40c9a14f9235087fbad17d
SHA512

20ca3f9cdd30d3ff3e22c7508bbddf1c51cee70ffb2bc97d3ce0305aae3905890991816a377da247a49c03f57daabf29dc8ec755d3af2f14a0cbb211f1a1ee4a
SSDEEP

768:ge4FV2PMqWNU+KdRpWbSDHCHFAHfgt85olwjtWF5Oox9Snlm7TF:OV2PMqqU+aS24t8mGRbjm7TF

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
fsutilext.dll

Files

fsutilext.dll
.dll windows:6 windows x64 arch:x64

c809b4c98d4f97b5555aa8ee475e62fb

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

fsutilext.pdb

Imports

msvcrt

memcmp
memcpy
__C_specific_handler
_initterm
malloc
free
_amsg_exit
_XcptFilter
memmove
_wcsicmp
wcsnlen
memset

kernel32

RtlLookupFunctionEntry
GetOverlappedResult
SetLastError
LocalAlloc
DeviceIoControl
CloseHandle
LocalFree
GetSystemDirectoryW
LoadLibraryExW
GetProcAddress
FreeLibrary
GetCurrentThread
GetFileAttributesW
CreateFileW
VirtualAlloc
ReadFile
VirtualFree
DelayLoadFailureHook
ResolveDelayLoadedAPI
SetThreadUILanguage
FindNextVolumeMountPointW
FindVolumeMountPointClose
FindFirstVolumeMountPointW
GetLastError
Sleep
RtlCaptureContext
CreateEventA
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
GetTickCount
RtlCompareMemory

ulib

?QueryWSTR@WSTRING@@QEBAPEAGKKPEAGKE@Z
?Initialize@WSTRING@@QEAAEPEBV1@KK@Z
?DisplayMsg@MESSAGE@@QEAAEKPEBDZZ
?FreeLibraryHandle@SYSTEM@@SAXPEAX@Z
?DisplayMsg@MESSAGE@@QEAAEK@Z
?QueryLibraryEntryPoint@SYSTEM@@SAP6A_JXZPEBVWSTRING@@0PEAPEAX@Z
?Initialize@WSTRING@@QEAAEPEBDK@Z
?Initialize@WSTRING@@QEAAEPEBGK@Z
??1DSTRING@@UEAA@XZ
??0DSTRING@@QEAA@XZ

ntdll

RtlAllocateHeap
RtlInitUnicodeString
NtOpenFile
NtDeviceIoControlFile
NtClose
RtlFreeHeap
RtlLengthSid
NtFsControlFile
RtlDosPathNameToNtPathName_U
RtlFreeUnicodeString

Exports

Exports

CheckSonyMSWorker
DeviceInstIsRemovableWorker
FindFirstVolumeMountPointWStub
FindNextVolumeMountPointWStub
FindVolumeMountPointCloseStub
GetDeviceIDDiskFromDeviceIDVolumeWorker
GetDeviceInstanceWorker
GetRemovableDeviceInstRecursWorker
GetWidgetWorker
InvalidateFveWorker
SendWithSenseParseWorker
SetThreadUILanguageStub
SystemParametersInfoWStub
WaitForUnitAndReportProgressWorker

Sections

.text
Size: 36KB - Virtual size: 36KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1024B - Virtual size: 768B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 192B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 1024B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 104B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

c809b4c98d4f97b5555aa8ee475e62fb

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

kernel32

ulib

ntdll

Exports

Exports

Sections

.text Size: 36KB - Virtual size: 36KB

.data Size: 512B - Virtual size: 1KB

.pdata Size: 1024B - Virtual size: 768B

.idata Size: 3KB - Virtual size: 2KB

.didat Size: 512B - Virtual size: 192B

.rsrc Size: 1024B - Virtual size: 1024B

.reloc Size: 512B - Virtual size: 104B

.text
Size: 36KB - Virtual size: 36KB

.data
Size: 512B - Virtual size: 1KB

.pdata
Size: 1024B - Virtual size: 768B

.idata
Size: 3KB - Virtual size: 2KB

.didat
Size: 512B - Virtual size: 192B

.rsrc
Size: 1024B - Virtual size: 1024B

.reloc
Size: 512B - Virtual size: 104B