remcos | Backdoor[.]exe

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General

Target

Backdoor.exe
Size

92KB
MD5

ff9d0de7067b1bf909d01d26024f7ae7
SHA1

edbe055e091614e44f5022c458872419ea5588d5
SHA256

8e18ea3503489fed7b387fb714492d5a7fef34f1610d9159e075e288f9e36149
SHA512

56f99e3a9477bac54f116574be4c418dbbc5c4b3a60893d9023fadf66157e17a9da9dee922e6d6916a74d96d401e28ef31ffca69e6a062d995b58220f273f2ec
SSDEEP

1536:YhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6are:+hzYTGWVvJ8f2v1TbPzuMsIFSHNThy+k

Score

10^/10

host remcos

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

angent.dns.com:2404

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
remcos_axwfyanmhaeeahv
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos family
remcos

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Backdoor.exe

Files

Backdoor.exe
.exe windows:4 windows x86 arch:x86

d3a62971944197f0701c7049a9c739d1

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetModuleFileNameA
GetLongPathNameA
CreateMutexA
OpenMutexA
Process32Next
Process32First
CreateToolhelp32Snapshot
SizeofResource
LockResource
LoadResource
FindResourceA
GetLocaleInfoA
Process32NextW
Process32FirstW
lstrlenA
GetDriveTypeA
CreateProcessA
GetTickCount
GlobalUnlock
GlobalLock
GlobalAlloc
WinExec
GetCurrentProcessId
CreateDirectoryW
CopyFileA
GetFileAttributesW
GetLogicalDriveStringsA
GetCurrentProcess
ResumeThread
SetThreadContext
WriteProcessMemory
VirtualAllocEx
ReadProcessMemory
GetThreadContext
VirtualAlloc
GlobalFree
LocalAlloc
TerminateProcess
ReadFile
PeekNamedPipe
GetStdHandle
CreatePipe
OpenProcess
DuplicateHandle
GetCurrentThread
lstrcpynA
ExitProcess
AllocConsole
GetStartupInfoA
ExpandEnvironmentStringsA
FindFirstFileA
FindNextFileA
GetLastError
LoadLibraryA
GetProcAddress
CreateFileMappingA
MapViewOfFileEx
DeleteFileA
RemoveDirectoryA
CloseHandle
GetFileAttributesA
SetFileAttributesA
SetEvent
TerminateThread
FindFirstFileW
FindNextFileW
FindClose
GetLocalTime
CreateEventA
WaitForSingleObject
CreateDirectoryA
ExitThread
Sleep
GetModuleHandleA
DeleteFileW
CreateThread

user32

GetWindowTextLengthA
GetForegroundWindow
UnhookWindowsHookEx
CloseClipboard
GetClipboardData
OpenClipboard
SetClipboardData
EmptyClipboard
ExitWindowsEx
MessageBoxA
GetKeyboardLayoutNameA
GetWindowThreadProcessId
ShowWindow
CloseWindow
GetWindowTextA
GetWindowTextW
EnumWindows
SendInput
CreateWindowExA
RegisterClassExA
AppendMenuA
CreatePopupMenu
TrackPopupMenu
SetForegroundWindow
GetCursorPos
DefWindowProcA
GetKeyState
CallNextHookEx
SetWindowsHookExA
GetMessageA
TranslateMessage
GetKeyboardLayout
FindWindowA
DispatchMessageA
IsWindowVisible

gdi32

CreateDCA
CreateCompatibleDC
GetDeviceCaps
CreateCompatibleBitmap
SelectObject
StretchBlt
GetObjectA
GetDIBits
DeleteObject
DeleteDC

advapi32

OpenProcessToken
LookupPrivilegeValueA
AdjustTokenPrivileges
RegCreateKeyExA
RegQueryInfoKeyA
RegEnumKeyExA
RegEnumValueA
RegDeleteValueA
RegCreateKeyA
RegSetValueExA
RegOpenKeyExA
RegDeleteKeyA
RegCloseKey
RegQueryValueExA
GetUserNameW

shell32

ShellExecuteA
ExtractIconA
Shell_NotifyIconA
ShellExecuteExA
ShellExecuteW

msvcp60

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?replace@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@IIPBD@Z
??8std@@YA_NPBDABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@@Z
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?find_last_of@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIDI@Z
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?rfind@?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QBEIGI@Z
?npos@?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@2IB
?find@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIPBDII@Z
??0Init@ios_base@std@@QAE@XZ
??1Init@ios_base@std@@QAE@XZ
??0_Winit@std@@QAE@XZ
??1_Winit@std@@QAE@XZ
?find@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIABV12@I@Z
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??Hstd@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@DABV10@@Z
?rfind@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIDI@Z
?find@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIDI@Z
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?length@?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QBEIXZ
??Bios_base@std@@QBEPAXXZ
?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@PBDI@Z
??6std@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@0@AAV10@PBD@Z
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??8std@@YA_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@0@Z
??0?$basic_ofstream@DU?$char_traits@D@std@@@std@@QAE@PBDH@Z
?is_open@?$basic_ofstream@DU?$char_traits@D@std@@@std@@QBE_NXZ
?data@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEPBDXZ
??8std@@YA_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@PBD@Z
??0logic_error@std@@QAE@ABV01@@Z
??0out_of_range@std@@QAE@ABV01@@Z
??1out_of_range@std@@UAE@XZ
??0out_of_range@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@@Z
??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBDABV?$allocator@D@1@@Z
??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV?$allocator@D@1@@Z
??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ
?c_str@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEPBDXZ
?resize@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXI@Z
??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z
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??Hstd@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@PBDABV10@@Z
??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBDIABV?$allocator@D@1@@Z
??_D?$basic_fstream@DU?$char_traits@D@std@@@std@@QAEXXZ
?close@?$basic_fstream@DU?$char_traits@D@std@@@std@@QAEXXZ
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@PBDH@Z
?seekp@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@JW4seekdir@ios_base@2@@Z
??0?$basic_fstream@DU?$char_traits@D@std@@@std@@QAE@PBDH@Z
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??Hstd@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@D@Z
?size@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIXZ
??Y?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@ABV01@@Z
?substr@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV12@II@Z
?npos@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@2IB
?length@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIXZ
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??_D?$basic_ifstream@DU?$char_traits@D@std@@@std@@QAEXXZ
?close@?$basic_ifstream@DU?$char_traits@D@std@@@std@@QAEXXZ
?read@?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV12@PADH@Z
?seekg@?$basic_istream@DU?$char_traits@D@std@@@std@@QAEAAV12@JW4seekdir@ios_base@2@@Z
?tellg@?$basic_istream@DU?$char_traits@D@std@@@std@@QAE?AV?$fpos@H@2@XZ
?is_open@?$basic_ifstream@DU?$char_traits@D@std@@@std@@QBE_NXZ
??0?$basic_ifstream@DU?$char_traits@D@std@@@std@@QAE@PBDH@Z
??_D?$basic_ofstream@DU?$char_traits@D@std@@@std@@QAEXXZ
?close@?$basic_ofstream@DU?$char_traits@D@std@@@std@@QAEXXZ
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msvcrt

_wrename
_controlfp
__set_app_type
__p__fmode
__p__commode
_adjust_fdiv
__setusermatherr
_initterm
__getmainargs
_acmdln
_XcptFilter
_exit
_onexit
__dllonexit
??1type_info@@UAE@XZ
_iob
freopen
srand
rand
mbstowcs
realloc
_itoa
sprintf
getenv
toupper
tolower
wcscmp
printf
strncmp
malloc
free
_EH_prolog
__CxxFrameHandler
time
localtime
strftime
puts
atoi
_ftol
??2@YAPAXI@Z
_except_handler3
exit
??0exception@@QAE@ABV0@@Z
_CxxThrowException

winmm

waveInOpen
waveInStop
waveInClose
waveInAddBuffer
waveInPrepareHeader
waveInUnprepareHeader
waveInStart

shlwapi

PathFileExistsA

ws2_32

htons
gethostbyname
closesocket
socket
send
WSAGetLastError
connect
recv
WSAStartup

urlmon

URLDownloadToFileA

gdiplus

GdipLoadImageFromStreamICM
GdipDisposeImage
GdipCloneImage
GdipAlloc
GdipSaveImageToStream
GdipSaveImageToFile
GdipLoadImageFromStream
GdiplusStartup
GdipGetImageEncoders
GdipFree
GdipGetImageEncodersSize

wininet

InternetCloseHandle
InternetOpenUrlA
InternetOpenA
InternetReadFile

Sections

.text
Size: 60KB - Virtual size: 59KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 20KB - Virtual size: 18KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Extracted

Signatures

Files

d3a62971944197f0701c7049a9c739d1

Headers

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

shell32

msvcp60

msvcrt

winmm

shlwapi

ws2_32

urlmon

gdiplus

wininet

Sections

.text Size: 60KB - Virtual size: 59KB

.rdata Size: 20KB - Virtual size: 18KB

.data Size: 4KB - Virtual size: 3KB

.rsrc Size: 4KB - Virtual size: 3KB

.text
Size: 60KB - Virtual size: 59KB

.rdata
Size: 20KB - Virtual size: 18KB

.data
Size: 4KB - Virtual size: 3KB

.rsrc
Size: 4KB - Virtual size: 3KB