chkwudrv[.]dll

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General

Target

chkwudrv.dll
Size

24KB
MD5

46b153343da5a751246c3aaa98f20e67
SHA1

2ce021130b005dbf7e006301316907350dc482ca
SHA256

4450fa9882f95bb7582782dd40a455afb4647a2cc00c6a9a2dfc01153db3891a
SHA512

9ce4846f17f2e8417481ffc6086b75c4815cf7e80bd7c1198dc832301a8f24070ace31b6685f257484f7684ff5de7947ea57c4e7ae804fc44db61e52798f467a
SSDEEP

384:xV1Q4S7kyiVISKVzvJ0cmKFsjJ4z0ljZam35m2dkmcdJxtqTlLV9WIGTW:TA4RKdvOcmvHH5mhtiVy

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
chkwudrv.dll

Files

chkwudrv.dll
.dll windows:6 windows x64 arch:x64

2a70a98ee117641692f12b7a61620790

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

chkwudrv.pdb

Imports

msvcrt

__C_specific_handler
??3@YAXPEAX@Z
_XcptFilter
_vsnwprintf
_amsg_exit
_initterm
free
malloc
_purecall
_lock
_unlock
__dllonexit
_onexit
_wcsicmp
??2@YAPEAX_K@Z
memset

ntdll

RtlLookupFunctionEntry
RtlVirtualUnwind
RtlCaptureContext

kernel32

RemoveDirectoryW
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
SetFileAttributesW
TlsFree
DeleteFileW
CloseHandle
TlsAlloc
DeleteCriticalSection
FindNextFileW
CreateEventW
ResetEvent
FindFirstFileW
TlsGetValue
HeapAlloc
HeapFree
SetEvent
GetProcessHeap
InitializeCriticalSection
TlsSetValue
Sleep
LeaveCriticalSection
GetFileAttributesW
CreateFileW
GetTempPathW
GetLastError
SetLastError
EnterCriticalSection
DisableThreadLibraryCalls
FindClose

user32

PeekMessageW
MsgWaitForMultipleObjects
TranslateMessage
DispatchMessageW

oleaut32

SysFreeString
SysStringLen
VariantInit
SysAllocStringLen
SysAllocString

ole32

CoInitializeEx
CoCreateGuid
StringFromGUID2
CoCreateInstance
CoUninitialize

shell32

SHCreateDirectoryExW

setupapi

pSetupConcatenatePaths
pSetupGetFileTitle

Exports

Exports

CancelWUOperation
IsWUAvailable
OpenWUContext
ReleaseWUContext
RemoveWUDirectory
WUDownloadUpdatedFiles
WUExpandUpdateToPath
WUFindMatchingDriver
WUInstallBestUpdate

Sections

.text
Size: 15KB - Virtual size: 15KB

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: 696B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 96B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

2a70a98ee117641692f12b7a61620790

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

kernel32

user32

oleaut32

ole32

shell32

setupapi

Exports

Exports

Sections

.text Size: 15KB - Virtual size: 15KB

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

.pdata Size: 1024B - Virtual size: 696B

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

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

.reloc Size: 512B - Virtual size: 96B

.text
Size: 15KB - Virtual size: 15KB

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

.pdata
Size: 1024B - Virtual size: 696B

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

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

.reloc
Size: 512B - Virtual size: 96B