GCmeZ[.]exe | Triage™

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General

Target
GCmeZ.exe
Size 3.3MB
Sample260930-cgkeyatvhs
SHA256 b582103eca0657e454f89cc0d0df0e5649bc507495eeca58a3df4010622cc0d3
MD5 6e97027a12f687a6906338f1ea45c5f1
SHA1 13fcf80f03f438239223b648da275a8e70962a0e
SHA512 759c4a4420b6ec5c69dc2615fbd073af4224fa2e67a42fd5420c72fc8f6bb3b1eefda3a6585f9c692c63412f3e41730ddec50aab2ecee19a915bb120f04e716f
SSDEEP 49152:1yyUNquxVeuu5oGVPqRaybnjKBTit5pv1WRbODZhpCVjiVPr7Nf0:QqZf8RZuBipvoRiVjCVjYlf
TLSH
T171F5E07797B6C782EDE6753D11626203ED7A82CCCCFE0E128120ED9C7C956629A4C7C9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
GCmeZ.exe

File Explorer

GCmeZ.exe

.exe 3.3MB

GCmeZ.exe

IMPHASH 4c0115dd8e02b0ab89a1574a0348cde5
SHA256 b582103eca0657e454f89cc0d0df0e5649bc507495eeca58a3df4010622cc0d3
MD5 6e97027a12f687a6906338f1ea45c5f1
SHA1 13fcf80f03f438239223b648da275a8e70962a0e
SHA512 759c4a4420b6ec5c69dc2615fbd073af4224fa2e67a42fd5420c72fc8f6bb3b1eefda3a6585f9c692c63412f3e41730ddec50aab2ecee19a915bb120f04e716f
SSDEEP 49152:1yyUNquxVeuu5oGVPqRaybnjKBTit5pv1WRbODZhpCVjiVPr7Nf0:QqZf8RZuBipvoRiVjCVjYlf
TLSH
T171F5E07797B6C782EDE6753D11626203ED7A82CCCCFE0E128120ED9C7C956629A4C7C9
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

3391488

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

winhttp

WinHttpSetOption WinHttpOpenRequest WinHttpCloseHandle WinHttpSendRequest WinHttpSetTimeouts WinHttpConnect WinHttpCrackUrl WinHttpReadData WinHttpQueryHeaders WinHttpAddRequestHeaders WinHttpReceiveResponse WinHttpWebSocketCompleteUpgrade WinHttpWebSocketClose WinHttpWebSocketReceive WinHttpWebSocketSend WinHttpQueryDataAvailable WinHttpOpen

crypt32

CryptBinaryToStringA CryptUnprotectData CryptStringToBinaryA

bcrypt

BCryptDestroyHash BCryptSetProperty BCryptCloseAlgorithmProvider BCryptHashData BCryptDestroyKey BCryptGenerateSymmetricKey BCryptDecrypt BCryptCreateHash BCryptEncrypt BCryptOpenAlgorithmProvider BCryptFinishHash

shell32

ShellExecuteExW ExtractIconExW

shlwapi

PathFindFileNameW

ole32

CreateStreamOnHGlobal CoInitializeEx CoTaskMemFree

ntdll

RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlInitUnicodeString

gdiplus

GdipGetImageGraphicsContext GdipDeleteGraphics GdipCreateBitmapFromScan0 GdiplusStartup GdiplusShutdown GdipGetImageEncoders GdipSetInterpolationMode GdipAlloc GdipCreateBitmapFromHBITMAP GdipDisposeImage GdipFree GdipGetImageEncodersSize GdipSaveImageToStream GdipDrawImageRectI GdipCloneImage GdipSetCompositingQuality GdipSetPixelOffsetMode

kernel32

EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW CompareStringW VirtualProtect FlsFree FlsSetValue FlsGetValue FlsAlloc GetFileType GetStdHandle GetModuleHandleExW FreeLibraryAndExitThread TlsFree TlsSetValue TlsGetValue TlsAlloc GetModuleFileNameA GetLastError GetProcAddress ExitProcess GetModuleHandleW SetThreadAffinityMask GetSystemFirmwareTable GetPhysicallyInstalledSystemMemory LocalAlloc GetModuleHandleA CreateToolhelp32Snapshot Process32NextW QueryPerformanceFrequency Process32FirstW CloseHandle GetNativeSystemInfo LocalFree WideCharToMultiByte SleepEx BuildCommDCBAndTimeoutsA EnumSystemFirmwareTables QueryPerformanceCounter VirtualQuery GetComputerNameA SizeofResource WriteFile GetModuleFileNameW EnumResourceNamesW GetTempPathW WaitForSingleObject CreateFileW SetFileAttributesW GetLogicalDriveStringsW EndUpdateResourceW LockResource DeleteFileW EnumResourceLanguagesW FindResourceExW LoadResource UpdateResourceW FreeLibrary BeginUpdateResourceW QueryFullProcessImageNameW GetTempFileNameW GetDriveTypeW LoadLibraryExW GetVolumeInformationW GetComputerNameW GlobalMemoryStatusEx GlobalAlloc GlobalFree GetConsoleOutputCP GlobalUnlock FindFirstFileW FindNextFileW FindClose GetFileAttributesExW GetCurrentThreadId GetSystemTime ExitThread GetTickCount64 ResetEvent CreateEventA SetUnhandledExceptionFilter GetTimeZoneInformation GetSystemInfo GetLocalTime CreateDirectoryW ReadFile OpenEventA QueryDosDeviceW GetFileSizeEx GetLongPathNameW GetCurrentProcess RemoveDirectoryW GetEnvironmentVariableW CreateMutexA GetFileAttributesW UnmapViewOfFile MultiByteToWideChar SetEvent TerminateThread CreateThread MoveFileExW GetCurrentProcessId CreateFileMappingW MapViewOfFile LoadLibraryW SetDllDirectoryW GetLogicalDrives GetDriveTypeA CreatePipe SetErrorMode FileTimeToSystemTime SetFilePointerEx CreateProcessA GetDiskFreeSpaceExA GetTickCount AreFileApisANSI TryEnterCriticalSection HeapCreate HeapFree EnterCriticalSection GetFullPathNameW GetDiskFreeSpaceW OutputDebugStringA LockFile LeaveCriticalSection InitializeCriticalSection SetFilePointer GetFullPathNameA SetEndOfFile UnlockFileEx CreateMutexW GetVersionExW HeapValidate HeapSize Sleep GetTempPathA FormatMessageW GetDiskFreeSpaceA GetFileAttributesA OutputDebugStringW FlushViewOfFile CreateFileA LoadLibraryA WaitForSingleObjectEx GetVersionExA DeleteFileA HeapReAlloc RaiseException HeapAlloc HeapCompact HeapDestroy UnlockFile CreateFileMappingA LockFileEx GetFileSize DeleteCriticalSection GetProcessHeap SystemTimeToFileTime GetSystemTimeAsFileTime FormatMessageA FlushFileBuffers CreateProcessW GetConsoleMode PeekNamedPipe ConnectNamedPipe ReadConsoleW IsValidCodePage GetACP GetOEMCP GetCommandLineA GetCommandLineW GetEnvironmentStringsW FreeEnvironmentStringsW SetEnvironmentVariableW SetStdHandle WriteConsoleW InitializeCriticalSectionAndSpinCount SetLastError GlobalLock CreateNamedPipeW

user32

GetDC DestroyIcon GetIconInfo EnumDisplayDevicesW EnumDisplayMonitors QueryDisplayConfig SetClipboardData GetClipboardData ReleaseDC EmptyClipboard CloseClipboard OpenClipboard SendInput GetMonitorInfoW GetSystemMetrics

gdi32

CreateCompatibleBitmap SelectObject BitBlt DeleteDC CreateCompatibleDC GetDeviceCaps DeleteObject GetDIBits GetObjectW

advapi32

RegGetValueW RegOpenKeyExW OpenProcessToken RegEnumKeyExW RegQueryValueExA GetTokenInformation CryptGetHashParam CryptAcquireContextA RegCreateKeyExW RegSetValueExW SetSecurityDescriptorDacl InitializeSecurityDescriptor GetUserNameW RegQueryValueExW LookupPrivilegeValueW AdjustTokenPrivileges RegCloseKey CryptAcquireContextW CryptDestroyHash CryptHashData CryptCreateHash CryptGenRandom CryptReleaseContext

setupapi

SetupDiEnumDeviceInfo SetupDiGetClassDevsW SetupDiDestroyDeviceInfoList SetupDiOpenDevRegKey SetupDiGetDeviceRegistryPropertyW SetupDiGetDeviceRegistryPropertyA SetupDiGetDevicePropertyW

api-ms-win-core-realtime-l1-1-1

QueryInterruptTime

iphlpapi

GetAdaptersInfo

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

TryAcquireSRWLockExclusive AcquireSRWLockExclusive InitializeCriticalSectionEx ReleaseSRWLockExclusive

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

TerminateProcess GetExitCodeThread GetStartupInfoW

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

InitOnceBeginInitialize InitOnceComplete WakeAllConditionVariable WakeConditionVariable SleepConditionVariableSRW

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

FindFirstFileExW GetFinalPathNameByHandleW

api-ms-win-core-file-l2-1-0

GetFileInformationByHandleEx

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

GetCPInfo LCMapStringEx GetLocaleInfoEx

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

DecodePointer EncodePointer

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

GetStringTypeW CompareStringEx

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

IsProcessorFeaturePresent

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

RtlVirtualUnwind RtlLookupFunctionEntry RtlCaptureContext

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

UnhandledExceptionFilter

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

IsDebuggerPresent

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

InitializeSListHead

wevtapi

EvtNext EvtRender EvtClose EvtCreateRenderContext EvtQuery

d3d11

D3D11CreateDevice

dxgi

CreateDXGIFactory1

mf

MFEnumDeviceSources

mfplat

MFShutdown MFCreateMediaType MFCreateAttributes MFStartup

mfreadwrite

MFCreateSourceReaderFromMediaSource

Name

.CyT

Size

2.3MB

Virtual Size

2.3MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.gfids

Size

777KB

Virtual Size

777KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.wext

Size

29KB

Virtual Size

108KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

75KB

Virtual Size

75KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.vblig

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

512B

Virtual Size

480B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

7KB

Virtual Size

6KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.gfids

Size

151KB

Virtual Size

150KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

GCmeZ.exe

winhttp

crypt32

bcrypt

shell32

shlwapi

ole32

ntdll

gdiplus

kernel32

user32

gdi32

advapi32

setupapi

api-ms-win-core-realtime-l1-1-1

iphlpapi

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

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

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

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

api-ms-win-core-file-l2-1-0

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

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

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

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

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

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

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

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

wevtapi

d3d11

dxgi

mf

mfplat

mfreadwrite

generic