memdos_msft[.]exe

Sharing

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General

Target

memdos_msft.exe
Size

24.3MB
MD5

19ac0a3d55c5b7f24d4d2a8b063fc1e1
SHA1

28ad9bbb45f66c5f5474aa4d3bcb677b352ae3ad
SHA256

675e24e2ea27c1541b0197180bedf3c337b9b293f4c0369f108557dd9705ec45
SHA512

60aae1a526d43095b259e86e1b8843a7edf93d15bf36eb793278ba8daad6acdbb99a0017d8c055b670e98f4ba41e2cabebdc234f8d7cfae8dc4c1982c2a9ef06
SSDEEP

196608:ytHOC60wn14YQ86mgo06PBqbkc9mdOfEBvbu3TNHDa0x3Eu0OFT8:y8zBn14YQVr36P4QPAMY5HDay3Eu0OC

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
memdos_msft.exe

Files

memdos_msft.exe
.exe windows:6 windows x86 arch:x86

6a3b9196964afbf0b9ce32329b5dfe3e

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

mpr

WNetEnumResourceW
WNetGetUniversalNameW
WNetCloseEnum
WNetOpenEnumW

winmm

timeGetTime

wininet

InternetGetConnectedState

winspool.drv

DocumentPropertiesW
ClosePrinter
DeviceCapabilitiesW
OpenPrinterW
GetPrinterW
SetPrinterW
GetDefaultPrinterW
EnumPrintersW

comdlg32

ChooseFontW
ChooseColorW
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_AddMasked
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_Duplicate
ImageList_ReplaceIcon
ImageList_SetOverlayImage

ws2_32

WSAStartup
gethostbyname
inet_ntoa

shell32

SHGetMalloc
SHGetFolderPathW
SHGetFileInfoW
SHGetDesktopFolder
DragQueryFileW
SHGetSpecialFolderLocation
Shell_NotifyIconW
SHAppBarMessage
SHFileOperationW
ShellExecuteW
ShellExecuteExW

user32

CopyImage
MoveWindow
SetMenuItemInfoW
GetMenuItemInfoW
DefFrameProcW
SetCaretPos
GetCaretPos
ScrollWindowEx
GetDlgCtrlID
GetUpdateRgn
FrameRect
RegisterWindowMessageW
FillRect
GetMenuStringW
SendMessageA
IsClipboardFormatAvailable
EnumWindows
ShowOwnedPopups
GetClassInfoExW
GetClassInfoW
GetScrollRange
GetActiveWindow
SetActiveWindow
DrawEdge
GetKeyboardLayoutList
LoadBitmapW
EnumChildWindows
SendNotifyMessageW
GetScrollBarInfo
UnhookWindowsHookEx
SetCapture
GetCapture
ChildWindowFromPointEx
CreatePopupMenu
ShowCaret
GetMenuItemID
DestroyCaret
CharLowerBuffW
ChangeDisplaySettingsW
PostMessageW
SetWindowLongW
RegisterClassExW
DrawMenuBar
SetParent
IsZoomed
InvalidateRgn
SetSystemCursor
GetClientRect
IsChild
SendDlgItemMessageW
IntersectRect
IsIconic
CallNextHookEx
CloseDesktop
ShowWindow
SetForegroundWindow
GetWindowTextW
GetAsyncKeyState
GetWindowTextLengthW
DestroyWindow
IsDialogMessageW
EndMenu
RegisterClassW
CharNextW
GetFocus
GetDC
SetThreadDesktop
GetThreadDesktop
SetFocus
ExitWindowsEx
ReleaseDC
mouse_event
GetClassLongW
OpenDesktopA
DrawTextW
SetScrollRange
ChangeDisplaySettingsExA
PeekMessageA
TabbedTextOutW
MessageBeep
SetClassLongW
SetRectEmpty
LockWindowUpdate
RemovePropW
AttachThreadInput
GetSubMenu
EqualRect
OpenInputDesktop
DestroyIcon
IsWindowVisible
DispatchMessageA
PtInRect
UnregisterClassW
GetTopWindow
SendMessageW
GetTabbedTextExtentW
GetLastInputInfo
GetMessageTime
NotifyWinEvent
GetComboBoxInfo
SendMessageTimeoutW
CreateMenu
LoadStringW
CharLowerW
SetWindowRgn
SetWindowPos
GetWindowRgn
GetMenuItemCount
GetSysColorBrush
GetWindowDC
DrawTextExW
CharLowerBuffA
EnumClipboardFormats
GetScrollInfo
SetWindowTextW
GetMessageExtraInfo
EnableScrollBar
GetSysColor
TrackPopupMenu
DrawIconEx
keybd_event
GetClassNameW
GetMessagePos
GetIconInfo
SetScrollInfo
GetKeyNameTextW
GetDesktopWindow
SetCursorPos
GetCursorPos
SetMenu
GetMenuState
GetMenu
SetRect
GetKeyState
IsRectEmpty
ValidateRect
IsCharAlphaW
GetCursor
KillTimer
BeginDeferWindowPos
WaitMessage
TranslateMDISysAccel
GetWindowPlacement
GetClipboardFormatNameW
CreateIconIndirect
GetMenuItemRect
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
GetGUIThreadInfo
ScrollWindow
GetLastActivePopup
UnionRect
SetMenuInfo
GetMenuInfo
GetSystemMetrics
EnumDisplayDevicesA
CharUpperBuffW
ClientToScreen
SetClipboardData
GetClipboardData
SetWindowPlacement
GetMonitorInfoW
CheckMenuItem
CharUpperW
DefWindowProcW
GetForegroundWindow
EnableWindow
GetWindowThreadProcessId
RedrawWindow
GetListBoxInfo
EndPaint
MsgWaitForMultipleObjectsEx
GetUserObjectInformationA
LoadKeyboardLayoutW
ActivateKeyboardLayout
DestroyAcceleratorTable
GetParent
CreateCaret
MonitorFromRect
InsertMenuItemW
GetPropW
MessageBoxW
SetPropW
EnumWindowStationsW
UpdateWindow
MsgWaitForMultipleObjects
VkKeyScanW
DestroyMenu
SetWindowsHookExW
CloseWindowStation
EmptyClipboard
GetDoubleClickTime
GetAncestor
GetDlgItem
AdjustWindowRectEx
DrawIcon
IsWindow
EnumThreadWindows
InvalidateRect
OpenWindowStationA
LookupIconIdFromDirectoryEx
SetKeyboardState
GetKeyboardState
DrawFrameControl
ScreenToClient
IsCharAlphaNumericW
WindowFromDC
BringWindowToTop
SetCursor
CreateIcon
RemoveMenu
AppendMenuW
SubtractRect
GetKeyboardLayoutNameW
OpenClipboard
TranslateMessage
MapWindowPoints
EnumDisplayMonitors
CallWindowProcW
CountClipboardFormats
CloseClipboard
DestroyCursor
PostMessageA
CharUpperBuffA
CopyIcon
PostQuitMessage
GetProcessWindowStation
ShowScrollBar
EnableMenuItem
LoadImageW
DeferWindowPos
EndDeferWindowPos
HideCaret
FindWindowExW
MonitorFromPoint
SystemParametersInfoW
LoadIconW
GetWindow
GetWindowLongW
GetWindowRect
ToUnicode
InsertMenuW
PostThreadMessageW
IsWindowEnabled
IsDialogMessageA
FindWindowW
DeleteMenu
GetKeyboardLayout

version

GetFileVersionInfoSizeW
VerQueryValueW
GetFileVersionInfoW

olepro32

OleCreatePropertyFrame

oledlg

OleUIPasteSpecialW
OleUIObjectPropertiesW
OleUIInsertObjectA

oleaut32

SafeArrayPutElement
GetErrorInfo
VariantInit
VariantClear
SysFreeString
SafeArrayAccessData
SysReAllocStringLen
SafeArrayCreate
SafeArrayGetElement
GetActiveObject
SysAllocStringLen
SafeArrayUnaccessData
SafeArrayPtrOfIndex
SafeArrayCreateVector
SafeArrayGetElemsize
VariantCopy
SafeArrayGetUBound
SafeArrayGetLBound
VariantCopyInd
VariantChangeType

netapi32

NetWkstaGetInfo

msvcrt

isupper
isalpha
isalnum
toupper
memchr
memcmp
memcpy
memset
isprint
isspace
iscntrl
isxdigit
ispunct
isgraph
islower
tolower

advapi32

RegSetValueExW
RegConnectRegistryW
RegCreateKeyA
GetUserNameA
GetUserNameW
CryptDestroyHash
RegQueryInfoKeyW
RegUnLoadKeyW
CryptReleaseContext
CryptGetHashParam
RegSaveKeyW
RegReplaceKeyW
CheckTokenMembership
RegCreateKeyExW
CryptAcquireContextW
RegLoadKeyW
RegEnumKeyExW
AdjustTokenPrivileges
RegDeleteKeyW
LookupPrivilegeValueW
RegOpenKeyExW
OpenProcessToken
FreeSid
AllocateAndInitializeSid
RegDeleteValueW
RegFlushKey
RegEnumValueW
RegQueryValueExW
CryptHashData
RegCloseKey
CryptCreateHash
RegRestoreKeyW

winhttp

WinHttpGetIEProxyConfigForCurrentUser
WinHttpSetTimeouts
WinHttpSetStatusCallback
WinHttpConnect
WinHttpReceiveResponse
WinHttpQueryAuthSchemes
WinHttpGetProxyForUrl
WinHttpReadData
WinHttpCloseHandle
WinHttpQueryHeaders
WinHttpOpenRequest
WinHttpAddRequestHeaders
WinHttpOpen
WinHttpWriteData
WinHttpSetCredentials
WinHttpQueryDataAvailable
WinHttpSetOption
WinHttpSendRequest
WinHttpQueryOption

cryptui

CryptUIDlgSelectCertificateW
CryptUIDlgViewCertificateA

kernel32

SetFileAttributesW
GetFileType
SetFileTime
QueryDosDeviceW
GetACP
CloseHandle
LocalFree
GetCurrentProcessId
SizeofResource
TerminateThread
QueryPerformanceFrequency
SetProcessWorkingSetSize
IsDebuggerPresent
FindNextFileW
GetFullPathNameW
VirtualFree
GetProcessHeap
ExitProcess
HeapAlloc
WriteProfileStringW
FindNextChangeNotification
GetCPInfoExW
GlobalSize
RtlUnwind
GetCPInfo
EnumSystemLocalesW
GetStdHandle
GetTimeZoneInformation
FileTimeToLocalFileTime
SystemTimeToTzSpecificLocalTime
GetModuleHandleW
FreeLibrary
TryEnterCriticalSection
HeapDestroy
FileTimeToDosDateTime
ReadFile
DosDateTimeToFileTime
GetUserDefaultLCID
CreateProcessW
GetLastError
GetModuleFileNameW
SetLastError
GlobalAlloc
GlobalUnlock
FindResourceW
lstrlenA
CreateThread
CompareStringW
MapViewOfFile
CreateMutexW
LoadLibraryA
GetVolumeInformationW
ResetEvent
MulDiv
FreeResource
GetDriveTypeW
GetVersion
MoveFileW
RaiseException
GlobalAddAtomW
FindFirstChangeNotificationW
FormatMessageW
OpenProcess
SwitchToThread
GetExitCodeThread
GetStringTypeW
GetCurrentThread
GetLogicalDrives
LocalFileTimeToFileTime
GetFileAttributesExW
IsBadReadPtr
LockResource
LoadLibraryExW
TerminateProcess
FileTimeToSystemTime
GetCurrentThreadId
UnhandledExceptionFilter
GlobalFindAtomW
VirtualQuery
GlobalFree
VirtualQueryEx
Sleep
EnterCriticalSection
SetFilePointer
ReleaseMutex
LoadResource
SuspendThread
GetTickCount
WaitForMultipleObjects
GetTempFileNameW
GetFileSize
GlobalDeleteAtom
GetStartupInfoW
GetFileAttributesW
SetCurrentDirectoryW
GetCurrentDirectoryW
InitializeCriticalSection
GetThreadPriority
GetCurrentProcess
GlobalLock
SetThreadPriority
VirtualAlloc
GetTempPathW
GetCommandLineW
GetSystemInfo
LeaveCriticalSection
GetProcAddress
ResumeThread
GetLogicalDriveStringsW
GetVersionExW
VerifyVersionInfoW
HeapCreate
LCMapStringW
GetDiskFreeSpaceW
VerSetConditionMask
FindFirstFileW
GetUserDefaultUILanguage
GetConsoleOutputCP
UnmapViewOfFile
GetConsoleCP
GlobalHandle
lstrlenW
CompareStringA
QueryPerformanceCounter
SetEndOfFile
lstrcmpW
InitializeCriticalSectionAndSpinCount
HeapFree
WideCharToMultiByte
FindClose
MultiByteToWideChar
CreateMutexA
LoadLibraryW
SetEvent
GetLocaleInfoW
CreateFileW
SystemTimeToFileTime
EnumResourceNamesW
GetSystemDirectoryW
DeleteFileW
IsDBCSLeadByteEx
FindCloseChangeNotification
GetEnvironmentVariableW
GetLocalTime
WaitForSingleObject
WriteFile
CreateFileMappingW
ExitThread
CreatePipe
DeleteCriticalSection
GetDateFormatW
GetTimeFormatW
TlsGetValue
SetErrorMode
GetComputerNameW
TzSpecificLocalTimeToSystemTime
IsValidLocale
SleepEx
TlsSetValue
CreateDirectoryW
GetSystemDefaultUILanguage
EnumCalendarInfoW
GetProfileStringW
LocalAlloc
RemoveDirectoryW
CreateEventW
WaitForMultipleObjectsEx
GetThreadLocale
SetThreadLocale

crypt32

CertGetNameStringW
CertFindExtension
CertGetPublicKeyLength
CertDuplicateCertificateContext
CryptFindOIDInfo
CertFreeCertificateContext
CertOpenStore
CertEnumCertificatesInStore
CertGetCertificateContextProperty
CryptSignMessage
CertControlStore
CryptDecodeObject
CertNameToStrW
CertCloseStore
PFXImportCertStore
CertGetIntendedKeyUsage
CertGetEnhancedKeyUsage

ole32

StgCreateDocfileOnILockBytes
OleRegEnumVerbs
CreateBindCtx
CoCreateGuid
CoCreateInstance
CLSIDFromString
IsEqualGUID
CreateStreamOnHGlobal
CreateILockBytesOnHGlobal
OleCreateFromData
CLSIDFromProgID
CoGetClassObject
CoInitialize
OleDraw
CoTaskMemAlloc
DoDragDrop
StringFromCLSID
RevokeDragDrop
IsAccelerator
OleGetIconOfClass
CoUninitialize
RegisterDragDrop
OleInitialize
ProgIDFromCLSID
CoInitializeEx
OleUninitialize
OleCreateLinkFromData
CoTaskMemFree
OleSetMenuDescriptor

gdi32

EnumEnhMetaFile
Pie
SetBkMode
GetTextCharsetInfo
GetRandomRgn
CreateCompatibleBitmap
CreatePolygonRgn
BeginPath
GetEnhMetaFileHeader
CloseEnhMetaFile
RectVisible
AngleArc
TranslateCharsetInfo
ResizePalette
SetAbortProc
SetTextColor
GetTextColor
StretchBlt
PathToRegion
GetCharABCWidthsFloatW
ScaleWindowExtEx
GetGlyphIndicesW
ExtSelectClipRgn
ExtEscape
RoundRect
SelectClipRgn
RectInRegion
RestoreDC
FillPath
SetRectRgn
GetTextMetricsW
GetWindowOrgEx
CreatePalette
GetTextCharset
CreateDCW
CreateICW
CreatePen
FillRgn
PolyBezierTo
GetCharABCWidthsW
GetStockObject
CreateSolidBrush
GetFontUnicodeRanges
GetBkMode
Polygon
MoveToEx
ResetDCW
PlayEnhMetaFile
Ellipse
ModifyWorldTransform
StartPage
GetBitmapBits
StartDocW
AbortDoc
GetEnhMetaFileBits
GetSystemPaletteEntries
OffsetWindowOrgEx
CreatePenIndirect
GetEnhMetaFilePaletteEntries
GetRegionData
SetMapMode
CreateFontIndirectW
PolyBezier
ExtCreatePen
DPtoLP
LPtoDP
GetNearestColor
DeleteMetaFile
EndDoc
GetObjectW
GetCurrentObject
GetFontData
GetWinMetaFileBits
SetROP2
GetTextExtentExPointW
GetROP2
GetOutlineTextMetricsW
GetEnhMetaFileDescriptionW
PtVisible
CreateEllipticRgnIndirect
ArcTo
GetWindowExtEx
CreateEnhMetaFileW
Arc
CreateRectRgnIndirect
TextOutW
SelectPalette
SetGraphicsMode
SetLayout
ExcludeClipRect
SetTextJustification
SetWindowOrgEx
MaskBlt
GetCharacterPlacementW
CreatePatternBrush
EndPage
EndPath
EqualRgn
DeleteEnhMetaFile
Chord
SetDIBits
SetViewportOrgEx
GetViewportOrgEx
CreateRectRgn
RealizePalette
GetObjectType
GetDIBColorTable
SetDIBColorTable
OffsetClipRgn
GetTextMetricsA
CreateBrushIndirect
StrokePath
PatBlt
SelectClipPath
SetEnhMetaFileBits
CreateDCA
CreateEllipticRgn
Rectangle
DeleteDC
SaveDC
GetWorldTransform
BitBlt
FrameRgn
SetWorldTransform
GetDeviceCaps
GetTextExtentPoint32W
PtInRegion
GetClipBox
GetClipRgn
Polyline
IntersectClipRect
CombineTransform
CreateBitmap
CombineRgn
SetWinMetaFileBits
CreateDIBitmap
GetStretchBltMode
CreateDIBSection
GetDIBits
SetStretchBltMode
ExtCreateRegion
CreateFontIndirectA
LineTo
GetRgnBox
EnumFontFamiliesW
EnumFontsW
SetWindowExtEx
CreateHalftonePalette
DeleteObject
SelectObject
ExtFloodFill
UnrealizeObject
CopyEnhMetaFileW
OffsetRgn
SetBkColor
CreateCompatibleDC
GetBrushOrgEx
GetCurrentPositionEx
SetDCPenColor
GetNearestPaletteIndex
SetTextAlign
GetTextAlign
CreateRoundRectRgn
GetTextExtentPointW
GetOutlineTextMetricsA
ExtTextOutW
SetBrushOrgEx
GetPixel
GdiFlush
GetTextFaceW
SetViewportExtEx
SetPixel
PolyPolyline
EnumFontFamiliesExW
SetPolyFillMode
StretchDIBits
WidenPath
GetPaletteEntries

magnification

MagSetWindowSource
MagInitialize
MagSetWindowTransform
MagSetImageScalingCallback
MagSetWindowFilterList

Exports

Exports

__dbk_fcall_wrapper
dbkFCallWrapperAddr

Sections

.text
Size: 17.8MB - Virtual size: 17.8MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 32KB - Virtual size: 31KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 419KB - Virtual size: 419KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 251KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 22KB - Virtual size: 22KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.didata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 111B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 92B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 6.0MB - Virtual size: 270.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

6a3b9196964afbf0b9ce32329b5dfe3e

Headers

DLL Characteristics

File Characteristics

Imports

mpr

winmm

wininet

winspool.drv

comdlg32

comctl32

ws2_32

shell32

user32

version

olepro32

oledlg

oleaut32

netapi32

msvcrt

advapi32

winhttp

cryptui

kernel32

crypt32

ole32

gdi32

magnification

Exports

Exports

Sections

.text Size: 17.8MB - Virtual size: 17.8MB

.itext Size: 32KB - Virtual size: 31KB

.data Size: 419KB - Virtual size: 419KB

.bss Size: - Virtual size: 251KB

.idata Size: 22KB - Virtual size: 22KB

.didata Size: 5KB - Virtual size: 4KB

.edata Size: 512B - Virtual size: 111B

.tls Size: - Virtual size: 92B

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

.rsrc Size: 6.0MB - Virtual size: 270.8MB

.text
Size: 17.8MB - Virtual size: 17.8MB

.itext
Size: 32KB - Virtual size: 31KB

.data
Size: 419KB - Virtual size: 419KB

.bss
Size: - Virtual size: 251KB

.idata
Size: 22KB - Virtual size: 22KB

.didata
Size: 5KB - Virtual size: 4KB

.edata
Size: 512B - Virtual size: 111B

.tls
Size: - Virtual size: 92B

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

.rsrc
Size: 6.0MB - Virtual size: 270.8MB