WindowsUpdate[.]exe

Sharing

Copy URL Twitter E-mail

General

Target
WindowsUpdate.exe
Size 74.8MB
Sample260606-a2rnmsht4k
SHA256 28410a5837420a9b349f8fd891343ea78cd6d2ba91e270dadf9c78e702786914
MD5 55da7a45a6505ea51d116a0e1e8631f7
SHA1 fe916892d5c104c6cee9ef3eb32e451f121addcd
SHA512 f2a4da50d84535c1e1f4b2bb46f075cdba9a20fa295b98811ebae10de0785e7f59c85e7a3c02fea6887cf6829441be1ac63381653b4fba84d68c0b5344f13a8b
SSDEEP 1572864:snddZn0XJVrvo2pUg9NoX0RnsGQI1k0oZ/hvxAG8kLK8odt0qrdYN:4Cv7ig9NXqDhvP80qrd
TLSH
T1CF0833A105628553F9CAD23F69E4893AB2F274706A2646CF42EC42C43D572E7AD3D7F0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

pyinstaller

Malware Config

Signatures

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
sample	pyinstaller

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
WindowsUpdate.exe

File Explorer

WindowsUpdate.exe

.exe 74.8MB
rat.pyc

.ps1 57KB

WindowsUpdate.exe

IMPHASH dcaf48c1f10b0efa0a4472200f3850ed
SHA256 28410a5837420a9b349f8fd891343ea78cd6d2ba91e270dadf9c78e702786914
MD5 55da7a45a6505ea51d116a0e1e8631f7
SHA1 fe916892d5c104c6cee9ef3eb32e451f121addcd
SHA512 f2a4da50d84535c1e1f4b2bb46f075cdba9a20fa295b98811ebae10de0785e7f59c85e7a3c02fea6887cf6829441be1ac63381653b4fba84d68c0b5344f13a8b
SSDEEP 1572864:snddZn0XJVrvo2pUg9NoX0RnsGQI1k0oZ/hvxAG8kLK8odt0qrdYN:4Cv7ig9NXqDhvP80qrd
TLSH
T1CF0833A105628553F9CAD23F69E4893AB2F274706A2646CF42EC42C43D572E7AD3D7F0
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Detects Pyinstaller

pyinstaller
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

57248

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_GUARD_CF IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

user32

CreateWindowExW ShutdownBlockReasonCreate MsgWaitForMultipleObjects ShowWindow DestroyWindow RegisterClassW DefWindowProcW PeekMessageW DispatchMessageW TranslateMessage PostMessageW GetMessageW MessageBoxW MessageBoxA SystemParametersInfoW DestroyIcon SetWindowLongPtrW GetWindowLongPtrW GetClientRect InvalidateRect ReleaseDC GetDC DrawTextW GetDialogBaseUnits EndDialog DialogBoxIndirectParamW MoveWindow SendMessageW

comctl32

ord380

kernel32

GetACP IsValidCodePage GetStringTypeW GetFileAttributesExW SetEnvironmentVariableW FlushFileBuffers LCMapStringW CompareStringW VirtualProtect InitializeCriticalSectionEx GetOEMCP GetCPInfo GetLastError FreeLibrary GetProcAddress LoadLibraryExW GetModuleHandleW MulDiv FormatMessageW GetModuleFileNameW SetDllDirectoryW GetEnvironmentStringsW SetErrorMode CreateDirectoryW GetCommandLineW GetEnvironmentVariableW ExpandEnvironmentStringsW DeleteFileW FindClose FindFirstFileW FindNextFileW GetDriveTypeW RemoveDirectoryW GetTempPathW CloseHandle QueryPerformanceCounter QueryPerformanceFrequency WaitForSingleObject Sleep GetCurrentProcess TerminateProcess GetExitCodeProcess CreateProcessW GetStartupInfoW LocalFree SetConsoleCtrlHandler K32EnumProcessModules K32GetModuleFileNameExW CreateFileW FindFirstFileExW GetFinalPathNameByHandleW MultiByteToWideChar WideCharToMultiByte FlsFree FreeEnvironmentStringsW GetProcessHeap GetTimeZoneInformation HeapSize HeapReAlloc WriteConsoleW SetEndOfFile CreateSymbolicLinkW RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter IsProcessorFeaturePresent GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead IsDebuggerPresent RtlUnwindEx SetLastError EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree EncodePointer RaiseException RtlPcToFileHeader GetCommandLineA GetFileInformationByHandle GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime ReadFile GetFullPathNameW SetStdHandle GetStdHandle WriteFile ExitProcess GetModuleHandleExW HeapFree GetConsoleMode ReadConsoleW SetFilePointerEx GetConsoleOutputCP GetFileSizeEx HeapAlloc GetCurrentDirectoryW FlsAlloc FlsGetValue FlsSetValue

advapi32

OpenProcessToken GetTokenInformation ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertSidToStringSidW

gdi32

SelectObject DeleteObject CreateFontIndirectW

Name

.text

Size

177KB

Virtual Size

177KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

79KB

Virtual Size

78KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

20KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

9KB

Virtual Size

9KB

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

6KB

Virtual Size

5KB

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

WindowsUpdate.exe

user32

comctl32

kernel32

advapi32

gdi32

generic

rat.pyc