Behavioral task
behavioral1
Sample
remcos_a.exe
Resource
win7-20240708-en
General
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Target
remcos_a.exe
-
Size
483KB
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MD5
a71c2ec29d24f8abfc5686b136f71f22
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SHA1
01929dffa443b3d17d2c9f32e2efa31759aec136
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SHA256
de06ee1f57bc4475cf0a9a7352b0ca51b31bee6aee54429982a6ab7bdf8795e9
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SHA512
10de0945c8640a495b8c2617f55d2de75cd05b87f99a6e201bb2d12a9f522dc0536e161d64c5be5ea13672bc4492d3effa9f2b25540834e09e001d826b4dd565
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SSDEEP
6144:wTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccriT4:wTlrYw1RUh3NFn+N5WfIQIjbs/ZBFT4
Malware Config
Extracted
remcos
RemoteHost
192.168.1.252:2404
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
-
hide_file
false
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hide_keylog_file
false
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install_flag
false
-
keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-39LPSU
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
-
Remcos family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource remcos_a.exe
Files
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remcos_a.exe.exe windows:5 windows x86 arch:x86
1389569a3a39186f3eb453b501cfe688
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
FindNextFileA
ExpandEnvironmentStringsA
GetLongPathNameW
CopyFileW
GetLocaleInfoA
CreateToolhelp32Snapshot
Process32NextW
Process32FirstW
VirtualProtect
SetLastError
VirtualFree
VirtualAlloc
GetNativeSystemInfo
HeapAlloc
GetProcessHeap
FreeLibrary
IsBadReadPtr
GetTempPathW
OpenProcess
OpenMutexA
lstrcatW
GetCurrentProcessId
GetTempFileNameW
UnmapViewOfFile
DuplicateHandle
CreateFileMappingW
MapViewOfFile
GetSystemDirectoryA
GlobalAlloc
GlobalLock
GetTickCount
GlobalUnlock
WriteProcessMemory
ResumeThread
GetThreadContext
ReadProcessMemory
CreateProcessW
SetThreadContext
LocalAlloc
GlobalFree
MulDiv
SizeofResource
QueryDosDeviceW
FindFirstVolumeW
GetConsoleScreenBufferInfo
SetConsoleTextAttribute
lstrlenW
GetStdHandle
SetFilePointer
FindResourceA
LockResource
LoadResource
LocalFree
FindVolumeClose
GetVolumePathNamesForVolumeNameW
lstrcpyW
FindFirstFileA
FormatMessageA
FindNextVolumeW
AllocConsole
lstrcmpW
GetModuleFileNameA
lstrcpynA
QueryPerformanceFrequency
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
GetModuleHandleExW
MoveFileExW
RtlUnwind
RaiseException
LoadLibraryExW
GetCPInfo
GetStringTypeW
GetLocaleInfoW
LCMapStringW
CompareStringW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
GetFileSize
TerminateThread
GetLastError
CreateDirectoryW
GetModuleHandleA
RemoveDirectoryW
MoveFileW
SetFilePointerEx
GetLogicalDriveStringsA
DeleteFileW
DeleteFileA
SetFileAttributesW
GetFileAttributesW
FindClose
lstrlenA
GetDriveTypeA
FindNextFileW
GetFileSizeEx
FindFirstFileW
GetModuleHandleW
ExitProcess
CreateMutexA
GetCurrentProcess
GetProcAddress
LoadLibraryA
CreateProcessA
PeekNamedPipe
CreatePipe
TerminateProcess
ReadFile
HeapFree
HeapCreate
CreateEventA
GetLocalTime
CreateThread
SetEvent
CreateEventW
WaitForSingleObject
Sleep
GetModuleFileNameW
CloseHandle
ExitThread
CreateFileW
WriteFile
SetConsoleOutputCP
InitializeCriticalSectionAndSpinCount
MultiByteToWideChar
DecodePointer
EncodePointer
WideCharToMultiByte
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
IsProcessorFeaturePresent
GetStartupInfoW
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
WaitForSingleObjectEx
ResetEvent
SetEndOfFile
user32
GetMessageA
GetWindowTextW
wsprintfW
GetClipboardData
UnhookWindowsHookEx
GetForegroundWindow
ToUnicodeEx
GetKeyboardLayout
SetWindowsHookExA
CloseClipboard
OpenClipboard
GetKeyboardState
CallNextHookEx
GetKeyboardLayoutNameA
GetKeyState
GetWindowTextLengthW
DispatchMessageA
SetForegroundWindow
SetClipboardData
EnumWindows
ExitWindowsEx
EmptyClipboard
ShowWindow
SetWindowTextW
MessageBoxW
IsWindowVisible
CloseWindow
SendInput
EnumDisplaySettingsW
mouse_event
CreatePopupMenu
TranslateMessage
TrackPopupMenu
DefWindowProcA
CreateWindowExA
AppendMenuA
GetSystemMetrics
RegisterClassExA
GetCursorPos
SystemParametersInfoW
GetWindowThreadProcessId
MapVirtualKeyA
DrawIcon
GetIconInfo
gdi32
BitBlt
CreateCompatibleBitmap
SelectObject
CreateCompatibleDC
StretchBlt
GetDIBits
DeleteObject
CreateDCA
GetObjectA
DeleteDC
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
ole32
CoInitializeEx
CoUninitialize
CoGetObject
shlwapi
PathFileExistsW
PathFileExistsA
StrToIntA
winmm
waveInOpen
waveInStart
waveInAddBuffer
PlaySoundW
mciSendStringA
mciSendStringW
waveInClose
waveInStop
waveInPrepareHeader
waveInUnprepareHeader
ws2_32
gethostbyname
send
WSAStartup
closesocket
inet_ntoa
htons
htonl
getservbyname
ntohs
getservbyport
gethostbyaddr
inet_addr
WSASetLastError
WSAGetLastError
recv
connect
socket
urlmon
URLOpenBlockingStreamW
URLDownloadToFileW
gdiplus
GdipSaveImageToStream
GdipGetImageEncodersSize
GdipFree
GdipDisposeImage
GdipAlloc
GdipCloneImage
GdipGetImageEncoders
GdiplusStartup
GdipLoadImageFromStream
wininet
InternetOpenUrlW
InternetOpenW
InternetCloseHandle
InternetReadFile
Sections
.text Size: 348KB - Virtual size: 348KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 94KB - Virtual size: 94KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 1024B - Virtual size: 560B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 15KB - Virtual size: 14KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ