remcos | au88buzz[.]exe

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General

Target
au88buzz.exe
Size 645KB
Sample260930-heaevavfrd
SHA256 6603337fd89ce3e0b1c3602a013a18711cd0a33a40e0960c3f9b093eb3fe1f88
MD5 5b95aa96622a234d55ff9d5442faca4e
SHA1 e0b371f1ea8eadcf9ef2b3491ea7f5618fe93ed9
SHA512 1750c55239736eeefcec662b0fd19276ce2f3780a1d2fcd44c86b04ef744ced06172213fb5d2a8e797fc5e5a23985d3c69316fb29b77d1ae0c89aa4ef98b89f9
SSDEEP 12288:lIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz0u:65GXkH4nnwitNfuq9wgs3y3V5vgNyo3S
TLSH
T18CE46D59A39402F8D0B7C135C982952BE7B2BC065571472F03E70E9B2F276A16F3EB16
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost rat remcos

Malware Config

Extracted

Family

remcos

Version

7.3.1 Pro

Botnet

RemoteHost

Attributes

audio_folder
MicRecords
audio_path
%Temp%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
okvip.exe
copy_folder
okvip
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
okvip
mouse_option
false
mutex
RemcosFocus-RXIEAS
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%SystemDrive%
screenshot_time
5
startup_value
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
chrome;discord;facebook;telegram;whatsapp;youtube;instagram;tiktok;spotify;netflix;zoom;teams;slack;steam;vlc;coccoc

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
au88buzz.exe

File Explorer

au88buzz.exe

.exe 645KB

au88buzz.exe

IMPHASH 91e69cff27767212388496ea08379c84
SHA256 6603337fd89ce3e0b1c3602a013a18711cd0a33a40e0960c3f9b093eb3fe1f88
MD5 5b95aa96622a234d55ff9d5442faca4e
SHA1 e0b371f1ea8eadcf9ef2b3491ea7f5618fe93ed9
SHA512 1750c55239736eeefcec662b0fd19276ce2f3780a1d2fcd44c86b04ef744ced06172213fb5d2a8e797fc5e5a23985d3c69316fb29b77d1ae0c89aa4ef98b89f9
SSDEEP 12288:lIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz0u:65GXkH4nnwitNfuq9wgs3y3V5vgNyo3S
TLSH
T18CE46D59A39402F8D0B7C135C982952BE7B2BC065571472F03E70E9B2F276A16F3EB16
MD5 SHA1 SHA512 SSDEEP TLSH

windows:5 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

312880

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

kernel32

GetLogicalDriveStringsA SetFilePointerEx MoveFileW RemoveDirectoryW GetModuleHandleA TerminateThread GetFileSize LoadLibraryW FreeLibrary WideCharToMultiByte ExpandEnvironmentStringsW GetEnvironmentVariableW MultiByteToWideChar GetModuleFileNameW CreateToolhelp32Snapshot Process32NextW Process32FirstW GetLongPathNameW CopyFileW InitializeCriticalSection GetLocaleInfoA VirtualProtect HeapFree SetLastError VirtualFree VirtualAlloc LoadLibraryA GetNativeSystemInfo HeapAlloc GetProcessHeap IsBadReadPtr GetTempPathW OpenProcess lstrcatW GetCurrentProcessId GetTempFileNameW GlobalAlloc GlobalLock GetTickCount GlobalUnlock LocalAlloc GlobalFree MulDiv SizeofResource QueryDosDeviceW FindFirstVolumeW GetConsoleScreenBufferInfo SetConsoleTextAttribute lstrlenW GetStdHandle SetFilePointer FindResourceA FormatMessageW LockResource LoadResource LocalFree MoveFileExW FindVolumeClose GetVolumePathNamesForVolumeNameW DeleteFileW SetConsoleOutputCP FormatMessageA FindNextVolumeW AllocConsole lstrcmpW WriteProcessMemory Wow64SetThreadContext Wow64GetThreadContext GetThreadContext SetThreadContext ResumeThread GetModuleFileNameA lstrcpynA QueryPerformanceCounter DeleteCriticalSection SetEndOfFile HeapSize WriteConsoleW SetStdHandle SetEnvironmentVariableW SetEnvironmentVariableA FreeEnvironmentStringsW GetEnvironmentStringsW GetCommandLineW GetCommandLineA GetOEMCP IsValidCodePage FindNextFileA FindFirstFileExA HeapReAlloc ReadConsoleW GetConsoleMode GetConsoleCP FlushFileBuffers GetFileType GetTimeZoneInformation EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetTimeFormatW GetDateFormatW GetACP GetModuleHandleExW LoadLibraryExW RaiseException RtlPcToFileHeader RtlUnwindEx GetCPInfo GetStringTypeW GetLocaleInfoW LCMapStringW RtlUnwind CompareStringW DecodePointer DeleteFileA GetLastError SetFileAttributesW GetFileAttributesW FindClose lstrlenA GetDriveTypeA FindNextFileW GetFileSizeEx GetModuleHandleW FindFirstFileW ExitProcess GetProcAddress OpenMutexA CreateMutexA GetCurrentProcess CreateProcessA PeekNamedPipe CreatePipe TerminateProcess ReadFile CreateEventA GetLocalTime CreateThread SetEvent CreateEventW WaitForSingleObject Sleep CloseHandle ExitThread CreateFileW LeaveCriticalSection WriteFile EnterCriticalSection lstrcpyW CreateDirectoryW EncodePointer TlsFree TlsSetValue TlsGetValue TlsAlloc SwitchToThread InitializeSListHead GetSystemTimeAsFileTime GetCurrentThreadId IsProcessorFeaturePresent GetStartupInfoW SetUnhandledExceptionFilter UnhandledExceptionFilter IsDebuggerPresent RtlVirtualUnwind RtlLookupFunctionEntry RtlCaptureContext WaitForSingleObjectEx ResetEvent InitializeCriticalSectionAndSpinCount

user32

wsprintfW GetClipboardData UnhookWindowsHookEx GetForegroundWindow ToUnicodeEx GetKeyboardLayout SetWindowsHookExA CloseClipboard OpenClipboard GetKeyboardState CallNextHookEx GetKeyboardLayoutNameA GetKeyState GetWindowTextLengthW GetWindowThreadProcessId SetForegroundWindow SetClipboardData EnumWindows GetWindowTextW EmptyClipboard ShowWindow SetWindowTextW MessageBoxW IsWindowVisible CloseWindow SendInput EnumDisplaySettingsW mouse_event MapVirtualKeyA DrawIcon GetSystemMetrics GetIconInfo SystemParametersInfoW GetCursorPos RegisterClassExA AppendMenuA CreateWindowExA DefWindowProcA CreatePopupMenu GetMessageA DispatchMessageA TranslateMessage ExitWindowsEx TrackPopupMenu

gdi32

BitBlt CreateCompatibleBitmap SelectObject CreateCompatibleDC StretchBlt GetDIBits DeleteDC DeleteObject CreateDCA GetObjectA

advapi32

CryptAcquireContextA CryptGenRandom CryptReleaseContext GetUserNameW RegEnumKeyExA GetTokenInformation AdjustTokenPrivileges LookupPrivilegeValueA OpenProcessToken RegQueryInfoKeyW RegQueryValueExA RegCreateKeyExW RegEnumKeyExW RegSetValueExW RegSetValueExA RegOpenKeyExA RegCreateKeyW RegDeleteValueW RegEnumValueW RegCreateKeyA RegDeleteKeyA RegCloseKey RegOpenKeyExW RegQueryValueExW

shell32

Shell_NotifyIconA ShellExecuteExA ShellExecuteW ExtractIconA

ole32

CoUninitialize CoGetObject CoInitializeEx

winmm

waveInOpen waveInUnprepareHeader waveInPrepareHeader waveInStart waveInAddBuffer waveInClose mciSendStringW mciSendStringA PlaySoundW waveInStop

ws2_32

recv connect socket WSAGetLastError send inet_ntoa closesocket WSAStartup getaddrinfo

urlmon

URLOpenBlockingStreamW URLDownloadToFileW

gdiplus

GdipLoadImageFromStream GdipFree GdipDisposeImage GdipSaveImageToStream GdipAlloc GdipCloneImage GdipGetImageEncoders GdiplusStartup GdipGetImageEncodersSize

wininet

InternetReadFile InternetCloseHandle InternetOpenUrlW InternetOpenW