RtcViewer[.]exe

Sharing

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General

Target

RtcViewer.exe
Size

4.3MB
MD5

19ea1126d41e5d3f0af6607368412b08
SHA1

18abeecfea127397f32c5bdb0df9b1d36c03ea2c
SHA256

8925179ea451d5995fdea359dd2cdd68c700941420390d73ad4870e6808eb970
SHA512

0b9a0b8568c7e1d29e14df5001c1bcb686798ed66423f70baffab5a546496232bcc41540b56214c47a53d56b30f0a8ffb71b91bdd8c1f9565bea772f0399caf7
SSDEEP

49152:1yEk7ud6YcjY6RbS4Q3ZsJ/gq6flH4vSnlXJA7EpBzHIv5UE2GD5hyJTTWVZrSS:182xsJL6fevYA+zov5UE2g5hyJe4S

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
RtcViewer.exe

Files

RtcViewer.exe
.exe windows:6 windows x86

3cc95405bddf09e488ebec9326f1ba96

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

mpr

WNetEnumResourceW
WNetGetUniversalNameW
WNetCloseEnum
WNetOpenEnumW

winspool.drv

DocumentPropertiesW
ClosePrinter
OpenPrinterW
GetDefaultPrinterW
EnumPrintersW

comdlg32

GetSaveFileNameW
GetOpenFileNameW

comctl32

ImageList_GetImageInfo
FlatSB_SetScrollInfo
InitCommonControls
ImageList_DragMove
ImageList_Destroy
_TrackMouseEvent
ImageList_DragShowNolock
ImageList_Add
FlatSB_SetScrollProp
ImageList_GetDragImage
ImageList_Create
ImageList_EndDrag
ImageList_DrawEx
ImageList_SetImageCount
FlatSB_GetScrollPos
FlatSB_SetScrollPos
InitializeFlatSB
ImageList_Copy
FlatSB_GetScrollInfo
ImageList_Write
ImageList_DrawIndirect
ImageList_SetBkColor
ImageList_GetBkColor
ImageList_BeginDrag
ImageList_GetIcon
ImageList_Replace
ImageList_GetImageCount
ImageList_DragEnter
ImageList_GetIconSize
ImageList_SetIconSize
ImageList_Read
ImageList_DragLeave
ImageList_LoadImageW
ImageList_Draw
ImageList_Remove
ImageList_ReplaceIcon
ImageList_SetOverlayImage

shell32

DragFinish
SHGetFileInfoW
DragQueryFileW
DragAcceptFiles
Shell_NotifyIconW
SHAppBarMessage
SHFileOperationW
ShellExecuteW
ExtractIconExW

user32

CopyImage
MoveWindow
SetMenuItemInfoW
GetMenuItemInfoW
DefFrameProcW
GetDlgCtrlID
FrameRect
RegisterWindowMessageW
GetMenuStringW
FillRect
SendMessageA
IsClipboardFormatAvailable
EnumWindows
ShowOwnedPopups
GetClassInfoW
GetScrollRange
SetActiveWindow
GetActiveWindow
DrawEdge
GetKeyboardLayoutList
LoadBitmapW
EnumChildWindows
GetScrollBarInfo
UnhookWindowsHookEx
SetCapture
GetCapture
ChildWindowFromPointEx
ShowCaret
CreatePopupMenu
GetMenuItemID
CharLowerBuffW
ChangeDisplaySettingsW
PostMessageW
SetWindowLongW
IsZoomed
SetParent
DrawMenuBar
GetClientRect
IsChild
IsIconic
CallNextHookEx
CloseDesktop
ShowWindow
SetForegroundWindow
GetWindowTextW
IsDialogMessageW
DestroyWindow
RegisterClassW
EndMenu
CharNextW
GetFocus
GetDC
SetThreadDesktop
GetThreadDesktop
SetFocus
ReleaseDC
mouse_event
GetClassLongW
OpenDesktopA
SetScrollRange
DrawTextW
ChangeDisplaySettingsExA
PeekMessageA
MessageBeep
SetClassLongW
RemovePropW
GetSubMenu
OpenInputDesktop
DestroyIcon
IsWindowVisible
DispatchMessageA
UnregisterClassW
GetTopWindow
SendMessageW
LoadStringW
CreateMenu
CharLowerW
SetWindowRgn
SetWindowPos
GetMenuItemCount
GetSysColorBrush
GetWindowDC
DrawTextExW
EnumClipboardFormats
GetScrollInfo
SetWindowTextW
GetMessageExtraInfo
GetSysColor
EnableScrollBar
TrackPopupMenu
keybd_event
DrawIconEx
GetClassNameW
GetMessagePos
GetIconInfo
SetScrollInfo
GetKeyNameTextW
GetDesktopWindow
SetCursorPos
GetCursorPos
SetMenu
GetMenuState
GetMenu
SetRect
GetKeyState
ValidateRect
GetCursor
KillTimer
WaitMessage
TranslateMDISysAccel
GetWindowPlacement
GetClipboardFormatNameW
CreateIconIndirect
CreateWindowExW
EnumDisplaySettingsA
ChildWindowFromPoint
GetMessageW
GetDCEx
SetProcessWindowStation
PeekMessageW
MonitorFromWindow
GetUpdateRect
SetTimer
WindowFromPoint
BeginPaint
RegisterClipboardFormatW
MapVirtualKeyW
OffsetRect
IsWindowUnicode
DispatchMessageW
CreateAcceleratorTableW
DefMDIChildProcW
GetSystemMenu
SetScrollPos
GetScrollPos
InflateRect
DrawFocusRect
ReleaseCapture
LoadCursorW
ScrollWindow
GetLastActivePopup
GetSystemMetrics
EnumDisplayDevicesA
CharUpperBuffW
ClientToScreen
SetClipboardData
GetClipboardData
SetWindowPlacement
GetMonitorInfoW
CheckMenuItem
CharUpperW
DefWindowProcW
GetForegroundWindow
EnableWindow
GetWindowThreadProcessId
RedrawWindow
EndPaint
MsgWaitForMultipleObjectsEx
GetUserObjectInformationA
LoadKeyboardLayoutW
ActivateKeyboardLayout
GetParent
MonitorFromRect
InsertMenuItemW
GetPropW
MessageBoxW
SetPropW
EnumWindowStationsW
UpdateWindow
MsgWaitForMultipleObjects
VkKeyScanW
DestroyMenu
SetWindowsHookExW
CloseWindowStation
EmptyClipboard
GetDlgItem
AdjustWindowRectEx
IsWindow
DrawIcon
EnumThreadWindows
InvalidateRect
OpenWindowStationA
GetKeyboardState
ScreenToClient
DrawFrameControl
BringWindowToTop
SetCursor
CreateIcon
RemoveMenu
GetKeyboardLayoutNameW
OpenClipboard
TranslateMessage
MapWindowPoints
EnumDisplayMonitors
CallWindowProcW
CountClipboardFormats
CloseClipboard
DestroyCursor
PostMessageA
CopyIcon
PostQuitMessage
GetProcessWindowStation
ShowScrollBar
EnableMenuItem
HideCaret
FindWindowExW
MonitorFromPoint
LoadIconW
SystemParametersInfoW
GetWindow
GetWindowLongW
GetWindowRect
InsertMenuW
ToUnicode
PostThreadMessageW
IsWindowEnabled
IsDialogMessageA
FindWindowW
GetKeyboardLayout
DeleteMenu

version

GetFileVersionInfoSizeW
VerQueryValueW
GetFileVersionInfoW

oleaut32

SysFreeString
VariantClear
VariantInit
GetErrorInfo
SysReAllocStringLen
SafeArrayCreate
SysAllocStringLen
SafeArrayPtrOfIndex
SafeArrayGetUBound
SafeArrayGetLBound
VariantCopy
VariantChangeType

advapi32

RegSetValueExW
RegConnectRegistryW
RegEnumKeyExW
RegLoadKeyW
RegCreateKeyA
GetUserNameA
RegDeleteKeyW
RegOpenKeyExW
RegQueryInfoKeyW
RegUnLoadKeyW
RegSaveKeyW
RegDeleteValueW
RegReplaceKeyW
RegFlushKey
RegQueryValueExW
RegEnumValueW
RegCloseKey
RegCreateKeyExW
RegRestoreKeyW

msvcrt

memcpy
memset

kernel32

SetFileAttributesW
GetFileType
SetFileTime
QueryDosDeviceW
GetACP
CloseHandle
LocalFree
GetCurrentProcessId
SizeofResource
QueryPerformanceFrequency
IsDebuggerPresent
FindNextFileW
GetFullPathNameW
VirtualFree
GetProcessHeap
ExitProcess
HeapAlloc
GetCPInfoExW
GlobalSize
RtlUnwind
GetCPInfo
EnumSystemLocalesW
GetStdHandle
FileTimeToLocalFileTime
GetModuleHandleW
FreeLibrary
TryEnterCriticalSection
HeapDestroy
FileTimeToDosDateTime
ReadFile
DosDateTimeToFileTime
GetLastError
GetModuleFileNameW
SetLastError
GlobalAlloc
GlobalUnlock
FindResourceW
CreateThread
CompareStringW
MapViewOfFile
LoadLibraryA
GetVolumeInformationW
ResetEvent
MulDiv
FreeResource
GetDriveTypeW
GetVersion
RaiseException
MoveFileW
GlobalAddAtomW
FormatMessageW
SwitchToThread
GetExitCodeThread
GetCurrentThread
GetLogicalDrives
LocalFileTimeToFileTime
GetFileAttributesExW
IsBadReadPtr
LoadLibraryExW
SetPriorityClass
LockResource
GetCurrentThreadId
UnhandledExceptionFilter
GlobalFindAtomW
VirtualQuery
GlobalFree
VirtualQueryEx
Sleep
EnterCriticalSection
SetFilePointer
LoadResource
SuspendThread
GetTickCount
GetTempFileNameW
GetFileSize
GlobalDeleteAtom
GetStartupInfoW
GetFileAttributesW
InitializeCriticalSection
GetThreadPriority
GetCurrentProcess
GlobalLock
SetThreadPriority
VirtualAlloc
GetTempPathW
GetCommandLineW
GetSystemInfo
LeaveCriticalSection
GetProcAddress
ResumeThread
GetLogicalDriveStringsW
GetVersionExW
VerifyVersionInfoW
HeapCreate
GetWindowsDirectoryW
LCMapStringW
GetDiskFreeSpaceW
VerSetConditionMask
FindFirstFileW
GetUserDefaultUILanguage
GetConsoleOutputCP
UnmapViewOfFile
GetConsoleCP
lstrlenW
QueryPerformanceCounter
SetEndOfFile
lstrcmpW
HeapFree
WideCharToMultiByte
FindClose
MultiByteToWideChar
LoadLibraryW
SetEvent
GetLocaleInfoW
CreateFileW
EnumResourceNamesW
DeleteFileW
IsDBCSLeadByteEx
GetLocalTime
WaitForSingleObject
WriteFile
CreateFileMappingW
ExitThread
DeleteCriticalSection
GetDateFormatW
TlsGetValue
SetErrorMode
IsValidLocale
TlsSetValue
CreateDirectoryW
GetSystemDefaultUILanguage
EnumCalendarInfoW
LocalAlloc
RemoveDirectoryW
CreateEventW
WaitForMultipleObjectsEx
GetThreadLocale
SetThreadLocale

ole32

IsEqualGUID
OleInitialize
OleUninitialize
CoInitialize
CoCreateGuid
CoCreateInstance
CoUninitialize
CoTaskMemFree
CoTaskMemAlloc

gdi32

Pie
SetBkMode
CreateCompatibleBitmap
GetEnhMetaFileHeader
RectVisible
AngleArc
SetAbortProc
SetTextColor
StretchBlt
RoundRect
SelectClipRgn
ExtEscape
RestoreDC
SetRectRgn
GetTextMetricsW
GetWindowOrgEx
CreatePalette
PolyBezierTo
CreateICW
CreateDCW
GetStockObject
CreateSolidBrush
Polygon
MoveToEx
PlayEnhMetaFile
Ellipse
StartPage
GetBitmapBits
StartDocW
AbortDoc
GetSystemPaletteEntries
GetEnhMetaFileBits
GetEnhMetaFilePaletteEntries
CreatePenIndirect
SetMapMode
CreateFontIndirectW
PolyBezier
EndDoc
GetObjectW
GetWinMetaFileBits
SetROP2
GetEnhMetaFileDescriptionW
ArcTo
Arc
SelectPalette
ExcludeClipRect
MaskBlt
SetWindowOrgEx
EndPage
DeleteEnhMetaFile
Chord
SetDIBits
SetViewportOrgEx
CreateRectRgn
RealizePalette
SetDIBColorTable
GetDIBColorTable
CreateBrushIndirect
PatBlt
SetEnhMetaFileBits
CreateDCA
Rectangle
SaveDC
DeleteDC
FrameRgn
BitBlt
GetDeviceCaps
GetTextExtentPoint32W
GetClipBox
IntersectClipRect
Polyline
CreateBitmap
SetWinMetaFileBits
GetStretchBltMode
CreateDIBitmap
SetStretchBltMode
GetDIBits
CreateDIBSection
LineTo
GetRgnBox
EnumFontsW
CreateHalftonePalette
SelectObject
DeleteObject
ExtFloodFill
UnrealizeObject
CopyEnhMetaFileW
SetBkColor
CreateCompatibleDC
GetBrushOrgEx
GetCurrentPositionEx
GetTextExtentPointW
ExtTextOutW
SetBrushOrgEx
GetPixel
GdiFlush
SetPixel
EnumFontFamiliesExW
StretchDIBits
GetPaletteEntries

Exports

Exports

__dbk_fcall_wrapper
dbkFCallWrapperAddr

Sections

.text
Size: 3.8MB - Virtual size: 3.8MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 45KB - Virtual size: 45KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 28KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.didata
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 114B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 84B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 512B - Virtual size: 93B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 303KB - Virtual size: 303KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 166KB - Virtual size: 166KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3cc95405bddf09e488ebec9326f1ba96

Headers

DLL Characteristics

File Characteristics

Imports

mpr

winspool.drv

comdlg32

comctl32

shell32

user32

version

oleaut32

advapi32

msvcrt

kernel32

ole32

gdi32

Exports

Exports

Sections

.text Size: 3.8MB - Virtual size: 3.8MB

.itext Size: 9KB - Virtual size: 9KB

.data Size: 45KB - Virtual size: 45KB

.bss Size: - Virtual size: 28KB

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

.didata Size: 3KB - Virtual size: 3KB

.edata Size: 512B - Virtual size: 114B

.tls Size: - Virtual size: 84B

.rdata Size: 512B - Virtual size: 93B

.reloc Size: 303KB - Virtual size: 303KB

.rsrc Size: 166KB - Virtual size: 166KB

.text
Size: 3.8MB - Virtual size: 3.8MB

.itext
Size: 9KB - Virtual size: 9KB

.data
Size: 45KB - Virtual size: 45KB

.bss
Size: - Virtual size: 28KB

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

.didata
Size: 3KB - Virtual size: 3KB

.edata
Size: 512B - Virtual size: 114B

.tls
Size: - Virtual size: 84B

.rdata
Size: 512B - Virtual size: 93B

.reloc
Size: 303KB - Virtual size: 303KB

.rsrc
Size: 166KB - Virtual size: 166KB