asyncrat | ComponentsScanner[.]exe

Sharing

Copy URL

Twitter E-mail

General

Target

ComponentsScanner.exe
Size

36.9MB
MD5

34cbeeb86c9fa2d1e77abf2931c6d194
SHA1

cb3cfbc70053f0cdf3fd265ccfd43011eb4cfb8b
SHA256

6a979b6a23a6f93221106b67b115661bed518c5fe4f7f358a821c5bb1ae5465b
SHA512

f24a6ceddb2f1358d24f51428f30959eda23bc72f7b23536dbb23ad16111014fca8cda83f4510f84a43f704bcc9e7412d1b9ef3f0e363ecf4c6edb745d50d042
SSDEEP

393216:23RHXTCAO7kblzsrxt32SYA76jTFK7TgnLy/cbpmhpGQeuM:qOIsttT+jTFK7TkLy/cZ

Score

10^/10

rat asyncrat

Malware Config

Signatures

Async RAT payload 1 IoCs

rat

resource	yara_rule
sample	asyncrat

Asyncrat family
asyncrat

Files

ComponentsScanner.exe
.exe windows x64

dfa4b7e43927c69560b31967c9d4722b

Code Sign

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1
Certificate

Issuer

CN=COMODO RSA Certification Authority,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

03/12/2014, 00:00

Not After

02/12/2029, 23:59

Subject

CN=COMODO RSA Extended Validation Code Signing CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ec
Certificate

Issuer

CN=COMODO RSA Extended Validation Code Signing CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

26/01/2021, 00:00

Not After

26/01/2023, 23:59

Subject

SERIALNUMBER=11791776,CN=Sysnative Forums Software Ltd,O=Sysnative Forums Software Ltd,POSTALCODE=GU10 2HP,STREET=Oaklawn House\, 13 Star Hill Drive,L=Churt,ST=Surrey,C=GB,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024742

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

Issuer

CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US

Not Before

02/05/2019, 00:00

Not After

18/01/2038, 23:59

Subject

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43
Certificate

Issuer

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

11/05/2022, 00:00

Not After

10/08/2033, 23:59

Subject

CN=Sectigo RSA Time Stamping Signer #3,O=Sectigo Limited,ST=Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1
Certificate

Issuer

CN=COMODO RSA Certification Authority,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

03/12/2014, 00:00

Not After

02/12/2029, 23:59

Subject

CN=COMODO RSA Extended Validation Code Signing CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ec
Certificate

Issuer

CN=COMODO RSA Extended Validation Code Signing CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

26/01/2021, 00:00

Not After

26/01/2023, 23:59

Subject

SERIALNUMBER=11791776,CN=Sysnative Forums Software Ltd,O=Sysnative Forums Software Ltd,POSTALCODE=GU10 2HP,STREET=Oaklawn House\, 13 Star Hill Drive,L=Churt,ST=Surrey,C=GB,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024742

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43
Certificate

Issuer

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

11/05/2022, 00:00

Not After

10/08/2033, 23:59

Subject

CN=Sectigo RSA Time Stamping Signer #3,O=Sectigo Limited,ST=Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

Issuer

CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US

Not Before

02/05/2019, 00:00

Not After

18/01/2038, 23:59

Subject

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

16:68:95:2d:9e:62:85:7c:77:ec:99:c5:2f:15:64:30:06:cd:8c:21:14:eb:70:a1:8a:af:1a:5a:9f:56:27:0f
Signer

Actual PE Digest

16:68:95:2d:9e:62:85:7c:77:ec:99:c5:2f:15:64:30:06:cd:8c:21:14:eb:70:a1:8a:af:1a:5a:9f:56:27:0f

Digest Algorithm

sha256

PE Digest Matches

true

54:21:e2:12:85:fb:77:c0:73:42:0f:04:45:ed:3a:41:ad:ae:e1:e9
Signer

Actual PE Digest

54:21:e2:12:85:fb:77:c0:73:42:0f:04:45:ed:3a:41:ad:ae:e1:e9

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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

Imports

kernel32

MultiByteToWideChar
GetTickCount
QueryPerformanceFrequency
QueryPerformanceCounter
GetModuleHandleW
FlushInstructionCache
RtlLookupFunctionEntry
RtlDeleteFunctionTable
InterlockedPushEntrySList
InterlockedFlushSList
InitializeSListHead
GetTickCount64
DuplicateHandle
QueueUserAPC
WaitForSingleObjectEx
SetThreadPriority
GetThreadPriority
ResumeThread
GetCurrentThreadId
Sleep
TlsAlloc
GetCurrentThread
CreateThread
WaitForMultipleObjectsEx
SignalObjectAndWait
RtlCaptureContext
SetThreadStackGuarantee
VirtualQuery
GetStdHandle
WideCharToMultiByte
GetConsoleOutputCP
MapViewOfFileEx
UnmapViewOfFile
GetStringTypeExW
SetEvent
GetCurrentProcessorNumber
GlobalMemoryStatusEx
CreateIoCompletionPort
PostQueuedCompletionStatus
SleepEx
GetQueuedCompletionStatus
InterlockedPopEntrySList
GetCurrentProcessorNumberEx
ExitProcess
CreateMemoryResourceNotification
GetProcessAffinityMask
SetThreadIdealProcessorEx
GetThreadIdealProcessorEx
GetLargePageMinimum
VirtualUnlock
GetLogicalProcessorInformation
SetThreadGroupAffinity
SetThreadAffinityMask
IsProcessInJob
QueryInformationJobObject
K32GetProcessMemoryInfo
VirtualAlloc
VirtualFree
VirtualProtect
SwitchToThread
CloseThreadpoolTimer
CreateThreadpoolTimer
SetThreadpoolTimer
GetFileSize
GetEnvironmentVariableW
SetEnvironmentVariableW
CreateEventW
ResetEvent
CreateSemaphoreExW
ReleaseSemaphore
CreateMutexW
ReleaseMutex
GetThreadContext
SuspendThread
SetThreadContext
GetEnabledXStateFeatures
InitializeContext
RtlRestoreContext
RtlInstallFunctionTableCallback
GetSystemDefaultLCID
GetUserDefaultLCID
RtlUnwind
LoadLibraryExW
HeapAlloc
HeapFree
GetProcessHeap
HeapCreate
HeapDestroy
GetEnvironmentStringsW
FreeEnvironmentStringsW
FormatMessageW
OutputDebugStringA
GetACP
LCMapStringEx
LocalFree
VerSetConditionMask
VerifyVersionInfoW
FindClose
GetModuleFileNameW
FindNextFileW
QueryThreadCycleTime
VirtualAllocExNuma
GetNumaProcessorNodeEx
GetNumaHighestNodeNumber
GetLogicalProcessorInformationEx
GetThreadGroupAffinity
GetSystemTimes
GetSystemTimeAsFileTime
CreateFileMappingW
CreateProcessW
GetCPInfo
CreateFileW
GetFileAttributesExW
GetTempPathW
GetCurrentDirectoryW
FindFirstFileExW
GetFullPathNameW
OpenProcess
LoadLibraryExA
OpenEventW
ExitThread
HeapReAlloc
CreateNamedPipeA
WaitForMultipleObjects
DisconnectNamedPipe
CreateFileA
CancelIoEx
GetOverlappedResult
ConnectNamedPipe
FlushFileBuffers
MapViewOfFile
GetActiveProcessorGroupCount
GetSystemTime
SetConsoleCtrlHandler
GetLocaleInfoEx
GetUserDefaultLocaleName
RtlAddFunctionTable
CreateDirectoryW
RemoveDirectoryW
GetFileSizeEx
LoadLibraryA
IsWow64Process
InitializeCriticalSectionAndSpinCount
AddVectoredExceptionHandler
SetUnhandledExceptionFilter
UnhandledExceptionFilter
TerminateProcess
GetCurrentProcessId
RaiseFailFastException
FreeLibrary
RaiseException
WaitForSingleObject
TlsSetValue
TlsGetValue
GetSystemInfo
IsDebuggerPresent
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
InitializeCriticalSection
WriteFile
GetProcessTimes
GetCommandLineW
ReadFile
SetFilePointer
GetProcAddress
GetModuleHandleExW
SetErrorMode
CloseHandle
GetCurrentProcess
FlushProcessWriteBuffers
SetLastError
GetLastError
OutputDebugStringW
SetXStateFeaturesMask
DebugBreak
DecodePointer
GetStringTypeW
RtlVirtualUnwind
IsProcessorFeaturePresent
RtlUnwindEx
EncodePointer
TlsFree
RtlPcToFileHeader
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableCS
SleepConditionVariableSRW
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
InitializeCriticalSectionEx
TryEnterCriticalSection
GetExitCodeThread
CreateFileMappingA

advapi32

RegGetValueW
SetKernelObjectSecurity
GetSidSubAuthorityCount
GetSidSubAuthority
GetTokenInformation
DeregisterEventSource
ReportEventW
RegisterEventSourceW
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
EventRegister
AdjustTokenPrivileges
OpenProcessToken
LookupPrivilegeValueW
SetThreadToken
RevertToSelf
OpenThreadToken
EventWriteTransfer
EventWrite

ole32

CoTaskMemAlloc
CoTaskMemFree
CoWaitForMultipleHandles
IIDFromString
CLSIDFromProgID
CoGetMarshalSizeMax
CoMarshalInterface
CoCreateGuid
CoGetObjectContext
CoRegisterInitializeSpy
CoGetContextToken
CoGetClassObject
CoCreateFreeThreadedMarshaler
CreateStreamOnHGlobal
StringFromGUID2
CoInitializeEx
CoUninitialize
CoUnmarshalInterface
CoRevokeInitializeSpy
CoReleaseMarshalData

oleaut32

SafeArrayAllocData
SafeArrayGetElemsize
SysStringByteLen
SysAllocStringByteLen
SafeArrayCreateVector
SafeArrayPutElement
LoadRegTypeLi
CreateErrorInfo
SafeArrayAllocDescriptorEx
VarCyFromDec
VariantInit
VariantClear
SafeArraySetRecordInfo
VariantChangeType
SafeArrayGetVartype
LoadTypeLibEx
QueryPathOfRegTypeLi
SafeArrayDestroy
SafeArrayGetLBound
SafeArrayGetDim
SysAllocStringLen
SysStringLen
SysAllocString
SetErrorInfo
GetErrorInfo
SysFreeString
VariantChangeTypeEx
GetRecordInfoFromTypeInfo

user32

MessageBoxW
LoadStringW

version

VerQueryValueW
GetFileVersionInfoExW
GetFileVersionInfoSizeExW

shell32

ShellExecuteW

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

strncmp
wcsncmp
iswupper
towlower
isalpha
isdigit
wcstok_s
strnlen
iswascii
towupper
wcscat_s
strcspn
wcscpy_s
_stricmp
strlen
isupper
strcmp
_wcsnicmp
_wcsdup
wcsncpy_s
tolower
islower
strtok_s
isspace
_strdup
__strncnt
strncpy_s
strcpy_s
wcsncat_s
strncat_s
strcat_s
iswspace
wcsnlen
_strnicmp
_wcsicmp

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

fwrite
__stdio_common_vswprintf_s
__p__commode
_set_fmode
__stdio_common_vsnprintf_s
__stdio_common_vfwprintf
_flushall
_wfopen
_wfsopen
fseek
__stdio_common_vfprintf
ftell
__stdio_common_vsprintf_s
fputws
__acrt_iob_func
fflush
_fileno
_dup
_setmode
setvbuf
fputwc
_get_stream_buffer_pointers
_fseeki64
fread
fsetpos
ungetc
fgetpos
fgetc
fputc
__stdio_common_vswprintf
fclose
fgets
__stdio_common_vsscanf
fopen
fputs
__stdio_common_vsnwprintf_s
_putws

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

terminate
_errno
_beginthreadex
abort
exit
_initialize_onexit_table
_register_onexit_function
_crt_atexit
_cexit
_seh_filter_exe
_set_app_type
_invalid_parameter_noinfo_noreturn
_configure_wide_argv
_initialize_wide_environment
_get_initial_wide_environment
_initterm
_initterm_e
_exit
_controlfp_s
__p___argc
__p___wargv
_c_exit
_register_thread_local_exe_atexit_callback
_invalid_parameter_noinfo
_wcserror

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

atol
_ltow_s
strtoull
_atoi64
strtoul
wcstoul
_wtoi
_wcstoui64
_itow_s

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

calloc
free
_set_new_mode
malloc
realloc

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

qsort

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

ceil
atanf
atan2f
atan2
atan
asinf
asin
acosf
modff
cos
powf
pow
floorf
log2
atanh
acosh
cosf
cbrt
asinh
asinhf
ilogbf
atanhf
cbrtf
acoshf
log2f
fma
fmaf
fmod
cosh
coshf
modf
exp
expf
_fdopen
floor
_copysign
_copysignf
_isnanf
__setusermatherr
_isnan
ceilf
fmodf
ilogb
frexp
log
log10
log10f
logf
_finite
sin
sinf
sinh
sinhf
sqrt
sqrtf
tan
tanf
tanh
acos
tanhf

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

_time64
wcsftime
_gmtime64_s

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

_configthreadlocale
_lock_locales
_unlock_locales
setlocale
__pctype_func
___lc_locale_name_func
___lc_codepage_func
___mb_cur_max_func
localeconv

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

_wrename
_wremove
_unlock_file
_lock_file

Exports

Exports

CLRJitAttachState
DotNetRuntimeInfo
MetaDataGetDispenser
g_CLREngineMetrics

Sections

.text
Size: 6.0MB - Virtual size: 6.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.CLR_UEF
Size: 512B - Virtual size: 271B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.5MB - Virtual size: 1.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 28KB - Virtual size: 120KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 215KB - Virtual size: 214KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Section
Size: 512B - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 77KB - Virtual size: 76KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1.4MB - Virtual size: 1.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 28KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

dfa4b7e43927c69560b31967c9d4722b

Code Sign

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1Certificate

Extended Key Usages

Key Usages

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ecCertificate

Extended Key Usages

Key Usages

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9Certificate

Extended Key Usages

Key Usages

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43Certificate

Extended Key Usages

Key Usages

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1Certificate

Extended Key Usages

Key Usages

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ecCertificate

Extended Key Usages

Key Usages

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43Certificate

Extended Key Usages

Key Usages

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9Certificate

Extended Key Usages

Key Usages

16:68:95:2d:9e:62:85:7c:77:ec:99:c5:2f:15:64:30:06:cd:8c:21:14:eb:70:a1:8a:af:1a:5a:9f:56:27:0fSigner

54:21:e2:12:85:fb:77:c0:73:42:0f:04:45:ed:3a:41:ad:ae:e1:e9Signer

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

ole32

oleaut32

user32

version

shell32

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

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

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 6.0MB - Virtual size: 6.0MB

.CLR_UEF Size: 512B - Virtual size: 271B

.rdata Size: 1.5MB - Virtual size: 1.5MB

.data Size: 28KB - Virtual size: 120KB

.pdata Size: 215KB - Virtual size: 214KB

.didat Size: 512B - Virtual size: 24B

Section Size: 512B - Virtual size: 8B

_RDATA Size: 77KB - Virtual size: 76KB

.rsrc Size: 1.4MB - Virtual size: 1.4MB

.reloc Size: 28KB - Virtual size: 28KB

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1
Certificate

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ec
Certificate

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43
Certificate

6d:d4:72:eb:02:ae:04:06:e3:dd:84:3f:5f:e1:45:e1
Certificate

2d:1b:91:3e:f5:5c:a6:d3:64:c4:9d:f4:30:d9:99:ec
Certificate

90:39:7f:9a:d2:4a:3a:13:f2:bd:91:5f:08:38:a9:43
Certificate

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

16:68:95:2d:9e:62:85:7c:77:ec:99:c5:2f:15:64:30:06:cd:8c:21:14:eb:70:a1:8a:af:1a:5a:9f:56:27:0f
Signer

54:21:e2:12:85:fb:77:c0:73:42:0f:04:45:ed:3a:41:ad:ae:e1:e9
Signer

.text
Size: 6.0MB - Virtual size: 6.0MB

.CLR_UEF
Size: 512B - Virtual size: 271B

.rdata
Size: 1.5MB - Virtual size: 1.5MB

.data
Size: 28KB - Virtual size: 120KB

.pdata
Size: 215KB - Virtual size: 214KB

.didat
Size: 512B - Virtual size: 24B

Section
Size: 512B - Virtual size: 8B

_RDATA
Size: 77KB - Virtual size: 76KB

.rsrc
Size: 1.4MB - Virtual size: 1.4MB

.reloc
Size: 28KB - Virtual size: 28KB