oioi[.]exe | Triage™

General

Target
oioi.exe
Size 15.9MB
Sample260705-wkpcvaat8p
SHA256 248556f6d6b0e6979972833957caec666d31af74985cbb14877fc6e7d1b74f87
MD5 8850fd323c611252b5216fae64204176
SHA1 7d3f64291487ceb3dc2be5a5cd2f00d3e5436b92
SHA512 f2a5ad5df144b3e92a4cf43d8b7f0814a66e709bc2db3f8b0bd2106ce43944839fbf97f26164a1de260284c859371afbb8246e888793a257bce3f1a6c8f03d51
SSDEEP 393216:cBehLDu12pXEAphVtlIwQSg+1/iZB37Xh5ogodjPRvk7do3plk:3fLpRphxBo+RiZBrxygod5vk7l
TLSH
T144F633A9B18155FAF8E6503D5A61C560E3B0B5402F05C2FF1BF44A113E3BAA64F3C6E9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

Malware Config

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
static1/unpack001/oioi.pyc	disable_win_def

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
sample	pyinstaller

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
oioi.exe

File Explorer

oioi.exe

.exe 15.9MB
oioi.pyc

112KB

oioi.exe

IMPHASH d5b1104f7bf955d6b89a47291d5b603b
SHA256 248556f6d6b0e6979972833957caec666d31af74985cbb14877fc6e7d1b74f87
MD5 8850fd323c611252b5216fae64204176
SHA1 7d3f64291487ceb3dc2be5a5cd2f00d3e5436b92
SHA512 f2a5ad5df144b3e92a4cf43d8b7f0814a66e709bc2db3f8b0bd2106ce43944839fbf97f26164a1de260284c859371afbb8246e888793a257bce3f1a6c8f03d51
SSDEEP 393216:cBehLDu12pXEAphVtlIwQSg+1/iZB37Xh5ogodjPRvk7do3plk:3fLpRphxBo+RiZBrxygod5vk7l
TLSH
T144F633A9B18155FAF8E6503D5A61C560E3B0B5402F05C2FF1BF44A113E3BAA64F3C6E9
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Detects Pyinstaller

pyinstaller
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

6

Entry point

54976

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

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

GetCursorPos ShutdownBlockReasonCreate GetWindowThreadProcessId SetWindowLongPtrW GetWindowLongPtrW MsgWaitForMultipleObjects ShowWindow DestroyWindow CreateWindowExW RegisterClassW DefWindowProcW PeekMessageW DispatchMessageW TranslateMessage GetMessageW GetMonitorInfoW MonitorFromPoint GetSystemMetrics

kernel32

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

advapi32

ConvertSidToStringSidW GetTokenInformation OpenProcessToken ConvertStringSecurityDescriptorToSecurityDescriptorW

Name

.text

Size

183KB

Virtual Size

182KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

79KB

Virtual Size

79KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

10KB

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

60KB

Virtual Size

59KB

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

oioi.exe

user32

kernel32

advapi32

generic

oioi.pyc