gkcodecs[.]dll | Triage™

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General

Target
gkcodecs.dll
Size 228KB
Sample260710-brhtescy6s
SHA256 bb3f71a24aff91cbcb58c3b7c8a9049ceff9cba2469b7011fb129f76966f7a90
MD5 5a5ec022cd82fad470fec96e9e8167f8
SHA1 a02a68ea3d1c7cb29420a63ae71d56e2577748c5
SHA512 a6e679b75b98f2165b828d53c6f9e0cdeaf00c801567f3a922d98a5dc7ab7e9170f5973f094b68b8809608b032f29f734778b05fd9ffdb73de7e0032ecf4eca9
SSDEEP 3072:b0cUSQ1fmnd4UXkwtdwZQCGzoRm/p7q22387sfqwxHxOqlbOehiwwAlnF/MrlMb:PUSPdGQl/p7q22Py/w4l
TLSH
T156347D4B72A559BCE106D038935BD67BBB72B8864230FDBF12E496302E17E511F2CB19
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
gkcodecs.dll

File Explorer

gkcodecs.dll

.dll 228KB

gkcodecs.dll

IMPHASH a4682415b17c95ddc0991c4724d66924
SHA256 bb3f71a24aff91cbcb58c3b7c8a9049ceff9cba2469b7011fb129f76966f7a90
MD5 5a5ec022cd82fad470fec96e9e8167f8
SHA1 a02a68ea3d1c7cb29420a63ae71d56e2577748c5
SHA512 a6e679b75b98f2165b828d53c6f9e0cdeaf00c801567f3a922d98a5dc7ab7e9170f5973f094b68b8809608b032f29f734778b05fd9ffdb73de7e0032ecf4eca9
SSDEEP 3072:b0cUSQ1fmnd4UXkwtdwZQCGzoRm/p7q22387sfqwxHxOqlbOehiwwAlnF/MrlMb:PUSPdGQl/p7q22Py/w4l
TLSH
T156347D4B72A559BCE106D038935BD67BBB72B8864230FDBF12E496302E17E511F2CB19
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4928

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DEBUG_STRIPPED IMAGE_FILE_DLL

PDB paths

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

WaitOnAddress WakeByAddressAll WakeByAddressSingle

mozwer

mozwer_Configure

comctl32

InitCommonControlsEx

gdi32

GetDeviceCaps GetStockObject

kernel32

CloseHandle CreateFileMappingA CreateFileW CreateToolhelp32Snapshot DeleteCriticalSection DuplicateHandle EnterCriticalSection GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentThreadId GetEnvironmentVariableW GetFileInformationByHandle GetFileInformationByHandleEx GetFullPathNameW GetLastError GetProcessHeap GetStdHandle HeapAlloc HeapFree HeapReAlloc InitOnceBeginInitialize InitOnceComplete InitializeCriticalSection LeaveCriticalSection MapViewOfFile Module32FirstW Module32NextW MultiByteToWideChar RaiseException RtlCaptureContext RtlLookupFunctionEntry RtlUnwindEx RtlVirtualUnwind SetLastError Sleep TlsAlloc TlsFree TlsGetValue TlsSetValue UnmapViewOfFile VirtualProtect VirtualQuery WaitForSingleObject WriteConsoleW

msvcrt

__iob_func _amsg_exit _initterm _lock _unlock abort calloc free fwrite memcmp memcpy memmove memset realloc strlen strncmp vfprintf

ntdll

NtWriteFile RtlNtStatusToDosError

ole32

CoCreateGuid CoInitializeEx CoUninitialize

shell32

SHGetFolderPathW

shlwapi

PathFileExistsW

user32

GetDesktopWindow GetSystemMetrics IsWindowVisible

version

GetFileVersionInfoSizeW

Name

.text

Size

182KB

Virtual Size

182KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

21KB

Virtual Size

21KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.pdata

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.xdata

Size

8KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

352B

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.edata

Size

512B

Virtual Size

138B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.idata

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.CRT

Size

512B

Virtual Size

96B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.reloc

Size

1024B

Virtual Size

580B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

1KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

gkcodecs.dll

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

mozwer

comctl32

gdi32

kernel32

msvcrt

ntdll

ole32

shell32

shlwapi

user32

version

generic