remcos | file[.]exe

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General

Target
file.exe
Size 470KB
Sample221107-3v5k5sfda2
SHA256 5324e064b98586e1f727eac2ab089af2c466e9b702af73d7fff281e17f725ee8
MD5 d4f1a32f0822fec6c7ba0e855dace64f
SHA1 65d7986f3105ab44eb94db4def53d22af6f51ade
SHA512 10c2fb5c723040933edf5f4451d9cf6cfcd6f7f8dbd4f861f7eb8158da2d3061ae1e724e05f80dfc331ac11dd0e9ecd109a6352325d64e7631cb300da4bb0f52
SSDEEP 12288:wwX4QbMZ2BsMn2fWZYp+MohtZsfZQQc9:AQbMZ2BsM/Yp+J6Zn8
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

v381_b remcos

Malware Config

Extracted

Family

remcos

Botnet

v381_B

srv01.airdns.org:32841

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
winupd381.exe
delete_file
true
hide_file
true
hide_keylog_file
true
install_flag
true
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
mouse_option
false
mutex
winupd_v381-XLOJM7
screenshot_crypt
true
screenshot_flag
false
screenshot_folder
winupdc_sc
screenshot_time
1
startup_value
winupd381
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos family
remcos

File Explorer

file.exe

.exe 470KB

file.exe

IMPHASH 5d354883fe6f15fcf48045037a99fb7a
SHA256 5324e064b98586e1f727eac2ab089af2c466e9b702af73d7fff281e17f725ee8
MD5 d4f1a32f0822fec6c7ba0e855dace64f
SHA1 65d7986f3105ab44eb94db4def53d22af6f51ade
SHA512 10c2fb5c723040933edf5f4451d9cf6cfcd6f7f8dbd4f861f7eb8158da2d3061ae1e724e05f80dfc331ac11dd0e9ecd109a6352325d64e7631cb300da4bb0f52
SSDEEP 12288:wwX4QbMZ2BsMn2fWZYp+MohtZsfZQQc9:AQbMZ2BsM/Yp+J6Zn8
MD5 SHA1 SHA512 SSDEEP

windows x86

Minor OS version

Major OS version

Entry point

207112

Magic Number

267

Subsystem

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE

PDB paths

kernel32

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

user32

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

gdi32

CreateCompatibleBitmap SelectObject CreateCompatibleDC StretchBlt GetDIBits DeleteDC DeleteObject CreateDCA GetObjectA

advapi32

CryptAcquireContextA CryptGenRandom CryptReleaseContext GetUserNameW RegEnumKeyExA QueryServiceStatus CloseServiceHandle OpenSCManagerW OpenSCManagerA ControlService StartServiceW QueryServiceConfigW ChangeServiceConfigW OpenServiceW EnumServicesStatusW AdjustTokenPrivileges LookupPrivilegeValueA OpenProcessToken RegCreateKeyA RegCloseKey RegQueryInfoKeyW RegQueryValueExA RegCreateKeyExW RegEnumKeyExW RegSetValueExW RegSetValueExA RegOpenKeyExA RegOpenKeyExW RegCreateKeyW RegDeleteValueW RegEnumValueW RegQueryValueExW RegDeleteKeyA

shell32

ShellExecuteExA Shell_NotifyIconA ExtractIconA ShellExecuteW

shlwapi

StrToIntA PathFileExistsW PathFileExistsA

winmm

waveInPrepareHeader waveInStop waveInUnprepareHeader mciSendStringA PlaySoundW waveInOpen waveInStart waveInAddBuffer waveInClose mciSendStringW

ws2_32

WSAGetLastError recv connect socket send WSAStartup closesocket inet_ntoa gethostbyname WSASetLastError inet_addr gethostbyaddr getservbyport ntohs getservbyname htons htonl

urlmon

URLDownloadToFileW URLOpenBlockingStreamW

gdiplus

GdiplusStartup GdipGetImageEncoders GdipCloneImage GdipAlloc GdipDisposeImage GdipFree GdipGetImageEncodersSize GdipSaveImageToStream GdipLoadImageFromStream

wininet

InternetOpenUrlW InternetCloseHandle InternetReadFile InternetOpenW

Name

.text

Size

337KB

Virtual Size

337KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

93KB

Virtual Size

92KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

23KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.gfids

Size

1024B

Virtual Size

560B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

19KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

14KB

Virtual Size

14KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ