winupdate[.]exe | Triage™

General

Target
winupdate.exe
Size 12.6MB
Sample260723-qephrsdk5v
SHA256 19b2865a79c3962c2a0f178c781ab46fd00e9dc305af22b276c16a5a95301dd4
MD5 9e46b8d95be1b3a07b733f6e022d44f3
SHA1 74bd80cf6fcdf0876bf2b65b8723f7f521e34120
SHA512 6a68f5649be9fa43922c8291348495b4c49f4fa116342a737ba82afa8526e33ea7df4b111385cee15b724dd3a2474de0cd64446024dacbe63e9a207d8ff6ee66
SSDEEP 393216:f4lAleZXvRCksbgj+xjKbbLEg011eZRM:f38Zf/ssKxyJge
TLSH
T17DD633E5A282A1FAE4D7517CAA8A06C3F066BC500790C9EB96C0B1755F3F6D40F7D623
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winupdate.exe

File Explorer

winupdate.exe

.exe 12.6MB

winupdate.exe

IMPHASH 807b238063cb8c173b7348845fd3b8e0
SHA256 19b2865a79c3962c2a0f178c781ab46fd00e9dc305af22b276c16a5a95301dd4
MD5 9e46b8d95be1b3a07b733f6e022d44f3
SHA1 74bd80cf6fcdf0876bf2b65b8723f7f521e34120
SHA512 6a68f5649be9fa43922c8291348495b4c49f4fa116342a737ba82afa8526e33ea7df4b111385cee15b724dd3a2474de0cd64446024dacbe63e9a207d8ff6ee66
SSDEEP 393216:f4lAleZXvRCksbgj+xjKbbLEg011eZRM:f38Zf/ssKxyJge
TLSH
T17DD633E5A282A1FAE4D7517CAA8A06C3F066BC500790C9EB96C0B1755F3F6D40F7D623
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

6

Entry point

53108

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

shell32

SHFileOperationW SHGetFolderPathW CommandLineToArgvW

kernel32

WriteConsoleW HeapReAlloc CreateDirectoryW SetConsoleCtrlHandler AddDllDirectory GetCommandLineW GetFullPathNameW GetStdHandle WriteFile GetShortPathNameW TerminateProcess GetModuleFileNameW SetEnvironmentVariableW K32GetModuleFileNameExW GetEnvironmentVariableW GetTempPathW WaitForSingleObject CreateFileW GetFileAttributesW GetModuleHandleA OpenProcess Sleep GetLastError CloseHandle GetProcAddress GetCurrentProcessId CreateProcessW WideCharToMultiByte GetSystemTimeAsFileTime FormatMessageA QueryPerformanceCounter SetDllDirectoryW LoadLibraryExW GetExitCodeProcess RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter GetCurrentProcess IsProcessorFeaturePresent GetCurrentThreadId InitializeSListHead IsDebuggerPresent GetStartupInfoW GetModuleHandleW HeapSize RtlUnwindEx SetLastError EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree FreeLibrary EncodePointer RaiseException RtlPcToFileHeader ExitProcess GetModuleHandleExW GetCommandLineA HeapAlloc MultiByteToWideChar HeapFree FlsAlloc FlsGetValue FlsSetValue FlsFree InitializeCriticalSectionEx VirtualProtect LCMapStringW GetFileType GetStringTypeW FindClose FindFirstFileExW FindNextFileW IsValidCodePage GetACP GetOEMCP GetCPInfo GetEnvironmentStringsW FreeEnvironmentStringsW SetStdHandle GetProcessHeap FlushFileBuffers GetConsoleOutputCP GetConsoleMode GetFileSizeEx SetFilePointerEx

Name

.text

Size

141KB

Virtual Size

140KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

12.5MB

Virtual Size

12.5MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

169KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

6KB

Virtual Size

6KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

1KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

winupdate.exe

shell32

kernel32

generic