Behavioral task
behavioral1
Sample
oos.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
oos.exe
Resource
win10v2004-20220812-en
General
-
Target
oos.exe
-
Size
504KB
-
MD5
af1e6840f7351cf6ade207de11a9983f
-
SHA1
dbc4f725029b7243c4297f668a1ad3b9dfdecd4d
-
SHA256
e71eba9f1a6afd930acf53b8aac467f256735ec0a52011934d9a5da38555ce61
-
SHA512
b4d4b46a7211f8032f5e8871218445046334024b3dc40b8ac7d0ff056aefe3f46dd0c602e003d3b71024d85a6f5e1004e3b604f8ddb0283e407e352905f7db27
-
SSDEEP
6144:E/Ya3uK4MW5sl80PF2hV/4puXyjSJ5DwFiyycdFXErWlsAOZZgjXAcjgXy6N:E/YaejslPd2f/4njSJJwLZ5sfZgwrN
Malware Config
Extracted
remcos
XP
xpremcuz300622.ddns.net:3542
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
oos.exe
-
delete_file
false
-
hide_file
true
-
hide_keylog_file
false
-
install_flag
true
-
install_path
%AppData%
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Remcos-MMP2I7
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
startup_value
kkl
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
-
Remcos family
Files
-
oos.exe.exe windows x86
79559da4b81809d0ac225fceda1ddb79
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
GetLocaleInfoA
CreateToolhelp32Snapshot
OpenMutexA
Process32NextW
Process32FirstW
VirtualProtect
SetLastError
VirtualFree
VirtualAlloc
LoadLibraryA
GetNativeSystemInfo
HeapAlloc
GetProcAddress
GetProcessHeap
FreeLibrary
IsBadReadPtr
GetTempPathW
OpenProcess
lstrcatW
GetCurrentProcessId
GetTempFileNameW
GetCurrentProcess
GetSystemDirectoryA
GlobalAlloc
GlobalLock
GetTickCount
GlobalUnlock
WriteProcessMemory
ResumeThread
GetThreadContext
VirtualAllocEx
ReadProcessMemory
CreateProcessW
SetThreadContext
LocalAlloc
GlobalFree
MulDiv
SizeofResource
SetFilePointer
FindResourceA
LockResource
LoadResource
LocalFree
FormatMessageA
GetModuleFileNameA
lstrcpynA
AllocConsole
CreateMutexA
QueryPerformanceCounter
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
CopyFileW
GetLongPathNameW
ExpandEnvironmentStringsA
FindNextFileA
FindFirstFileA
GetFileSize
TerminateThread
GetLastError
SetFileAttributesW
GetModuleHandleA
CreateDirectoryW
RemoveDirectoryW
MoveFileW
SetFilePointerEx
GetLogicalDriveStringsA
DeleteFileW
DeleteFileA
GetFileAttributesW
FindClose
lstrlenA
GetDriveTypeA
FindNextFileW
GetFileSizeEx
FindFirstFileW
ExitProcess
CreateProcessA
PeekNamedPipe
CreatePipe
TerminateProcess
ReadFile
HeapFree
HeapCreate
CreateEventA
GetLocalTime
CreateThread
SetEvent
CreateEventW
WaitForSingleObject
Sleep
GetModuleFileNameW
CloseHandle
ExitThread
CreateFileW
WriteFile
QueryPerformanceFrequency
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
Sections
.text Size: 336KB - Virtual size: 336KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 96KB - Virtual size: 96KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 24KB - Virtual size: 24KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 20KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 16KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ