fltLib[.]dll | Triage

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General

Target

fltLib.dll
Size

27KB
MD5

6ea5b8aa96c010d40d2ae9d5400b207f
SHA1

f280639ff89f06cd699f1d97e877436d3ecbd165
SHA256

a999d4a4a958c8ff97c047e317cc41924d3f626488c7c7160381f0ef99cbb4ee
SHA512

ca442cb5d91e483851448d764e58b51c5e554507cc962713c0e1ea4dbe86c991e96740650608cf106954e8c2b8bcebeac4e9dac5b4753b913941c9dfdf3714c4
SSDEEP

384:B/DCFOQ/9NRnFLW7AqZAbQYJhjQP40mBhW0uWBs8hDBRJjqB0uw7lGso0:BOzFLW7AqBYuYBBHh1PlCv

Score

1^/10

Malware Config

Signatures

Files

fltLib.dll
.dll windows:10 windows x86 arch:x86

3479fd078363bb746137aaeab765d17b

Code Sign

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

04/03/2020, 18:30

Not After

03/03/2021, 18:30

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

5e:1a:01:d4:1a:2c:d5:f3:90:f9:50:5f:e2:0f:77:25:9e:82:95:6b:f1:84:f0:26:9d:2b:c9:95:dd:33:ba:3d
Signer

Actual PE Digest

5e:1a:01:d4:1a:2c:d5:f3:90:f9:50:5f:e2:0f:77:25:9e:82:95:6b:f1:84:f0:26:9d:2b:c9:95:dd:33:ba:3d

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

fltLib.pdb

Imports

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

_initterm
_initterm_e

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

_o___std_type_info_destroy_list
_o__cexit
_o__configure_narrow_argv
_o__execute_onexit_table
_o__initialize_narrow_environment
_o__initialize_onexit_table
memcpy
_o__seh_filter_dll
_o_wcscat_s
_o_wcscpy_s
_except_handler4_common

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

memset

ntdll

NtCreateFile
NtFsControlFile
RtlNtStatusToDosError
DbgPrint
RtlFreeHeap
RtlAllocateHeap
NtDeviceIoControlFile
NtWaitForSingleObject
RtlInitUnicodeString

api-ms-win-core-file-l1-1-0

CreateFileW

api-ms-win-core-file-l1-2-0

GetVolumePathNamesForVolumeNameW
GetVolumeNameForVolumeMountPointW

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetLastError

api-ms-win-core-libraryloader-l1-2-0

DisableThreadLibraryCalls

api-ms-win-core-handle-l1-1-0

CloseHandle

api-ms-win-core-debug-l1-1-0

IsDebuggerPresent

api-ms-win-core-processthreads-l1-1-0

TerminateProcess
GetCurrentProcessId
GetCurrentThreadId
GetCurrentProcess

api-ms-win-core-processthreads-l1-1-1

IsProcessorFeaturePresent

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime

api-ms-win-core-interlocked-l1-1-0

InitializeSListHead

Exports

Exports

FilterAttach
FilterAttachAtAltitude
FilterClose
FilterConnectCommunicationPort
FilterCreate
FilterDetach
FilterFindClose
FilterFindFirst
FilterFindNext
FilterGetDosName
FilterGetInformation
FilterGetMessage
FilterInstanceClose
FilterInstanceCreate
FilterInstanceFindClose
FilterInstanceFindFirst
FilterInstanceFindNext
FilterInstanceGetInformation
FilterLoad
FilterReplyMessage
FilterSendMessage
FilterUnload
FilterVolumeClose
FilterVolumeFindClose
FilterVolumeFindFirst
FilterVolumeFindNext
FilterVolumeInstanceFindClose
FilterVolumeInstanceFindFirst
FilterVolumeInstanceFindNext

Sections

.text
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 932B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 608B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3479fd078363bb746137aaeab765d17b

Code Sign

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65Certificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

5e:1a:01:d4:1a:2c:d5:f3:90:f9:50:5f:e2:0f:77:25:9e:82:95:6b:f1:84:f0:26:9d:2b:c9:95:dd:33:ba:3dSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

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

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

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

ntdll

api-ms-win-core-file-l1-1-0

api-ms-win-core-file-l1-2-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-debug-l1-1-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-processthreads-l1-1-1

api-ms-win-core-profile-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-interlocked-l1-1-0

Exports

Exports

Sections

.text Size: 12KB - Virtual size: 11KB

.data Size: 512B - Virtual size: 932B

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

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 1024B - Virtual size: 608B

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

5e:1a:01:d4:1a:2c:d5:f3:90:f9:50:5f:e2:0f:77:25:9e:82:95:6b:f1:84:f0:26:9d:2b:c9:95:dd:33:ba:3d
Signer

.text
Size: 12KB - Virtual size: 11KB

.data
Size: 512B - Virtual size: 932B

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

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 1024B - Virtual size: 608B