remcos | remcosviejo[.]exe

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General

Target

remcosviejo.exe
Size

483KB
MD5

e6ed0b450a69ad32a2cf629236265e1c
SHA1

c5b490ac0148705cc13e61bec49ca9d3d020cead
SHA256

8de4861c4aca30b32685f9a1b78c307b6faa5011551ebf689babc7c42babb720
SHA512

61c8dbfe1497ef9d32d4c905f2e84f69e3dcedca90f7f7f15bffc69d53088aa3fd0e3900de4b87494303b46e05a08e777ace9715430efb9cdf2f5abc3d646dc3
SSDEEP

6144:vXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZ5AXIcNc5Gv:vX7tPMK8ctGe4Dzl4h2QnuPs/Z55cv

Score

10^/10

nlk remcos

Malware Config

Extracted

Family

remcos

Botnet

Nlk

comandoespecial2023.duckdns.org:8888

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-3PWW8O
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos family
remcos

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
remcosviejo.exe

Files

remcosviejo.exe
.exe windows:5 windows x86 arch:x86

8d5087ff5de35c3fbb9f212b47d63cad

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
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
TlsAlloc
InitializeCriticalSectionAndSpinCount
MultiByteToWideChar
DecodePointer
EncodePointer
WideCharToMultiByte
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
IsProcessorFeaturePresent
GetStartupInfoW
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
WaitForSingleObjectEx
ResetEvent
SetEndOfFile

user32

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

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

waveInUnprepareHeader
waveInOpen
waveInStart
waveInAddBuffer
PlaySoundW
mciSendStringA
mciSendStringW
waveInClose
waveInStop
waveInPrepareHeader

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

Sharing

General

Malware Config

Extracted

Signatures

Files

8d5087ff5de35c3fbb9f212b47d63cad

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

shell32

ole32

shlwapi

winmm

ws2_32

urlmon

gdiplus

wininet

Sections

.text Size: 348KB - Virtual size: 348KB

.rdata Size: 94KB - Virtual size: 94KB

.data Size: 3KB - Virtual size: 23KB

.tls Size: 512B - Virtual size: 9B

.gfids Size: 1024B - Virtual size: 560B

.rsrc Size: 19KB - Virtual size: 18KB

.reloc Size: 15KB - Virtual size: 14KB

.text
Size: 348KB - Virtual size: 348KB

.rdata
Size: 94KB - Virtual size: 94KB

.data
Size: 3KB - Virtual size: 23KB

.tls
Size: 512B - Virtual size: 9B

.gfids
Size: 1024B - Virtual size: 560B

.rsrc
Size: 19KB - Virtual size: 18KB

.reloc
Size: 15KB - Virtual size: 14KB