bookDownloader[.]exe

Sharing

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General

Target

bookDownloader.exe
Size

14.2MB
MD5

e6c1ec1e359f2152e85edabd3f2acfe5
SHA1

3bd10039137e99c22dde5af05f79dea1c8c157e3
SHA256

398d3839f4649f5842714a926a99a038db3ee16080cbc61019194990b93da3ca
SHA512

3322a20d00642bee383126566c72afbee2a90dc69427404a720e26c4f77efd57c74d2617742da43576ddf9e38a550c01691ab7e0460536c94872eb7ba17a14ae
SSDEEP

98304:STEvoxV+ZTWYfBBttBAnEI8Q+LwkOypgjzD+ixr+rc/UK6gpDhsNoiPtORalZLC8:MrkjZf//pUzKVrc/UiDcTPV

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
bookDownloader.exe

Files

bookDownloader.exe
.exe windows x86

a22da6b9d449b9053a3371c34057dda5

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Imports

winspool.drv

DocumentPropertiesW
ClosePrinter
OpenPrinterW
GetDefaultPrinterW
EnumPrintersW

comctl32

ImageList_GetImageInfo
FlatSB_SetScrollInfo
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_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

Shell_NotifyIconW

user32

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

version

GetFileVersionInfoSizeW
VerQueryValueW
GetFileVersionInfoW

oleaut32

SafeArrayPutElement
SysStringLen
GetErrorInfo
VariantInit
VariantClear
SysFreeString
SafeArrayAccessData
SysReAllocStringLen
SafeArrayCreate
SafeArrayGetElement
SysAllocStringLen
SafeArrayUnaccessData
SafeArrayPtrOfIndex
VariantCopy
SafeArrayGetUBound
SafeArrayGetLBound
SafeArrayRedim
VariantCopyInd
VariantChangeType

advapi32

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

netapi32

NetWkstaGetInfo
NetApiBufferFree

msvcrt

memcpy
memset

kernel32

GetACP
LocalFree
CloseHandle
GetCurrentProcessId
SizeofResource
VirtualProtect
QueryPerformanceFrequency
IsDebuggerPresent
VirtualFree
GetFullPathNameW
ExitProcess
HeapAlloc
GetCPInfoExW
RtlUnwind
GetCPInfo
EnumSystemLocalesW
GetStdHandle
GetTimeZoneInformation
GetModuleHandleW
FreeLibrary
TryEnterCriticalSection
HeapDestroy
ReadFile
HeapSize
GetLastError
GetModuleFileNameW
SetLastError
GlobalAlloc
GlobalUnlock
FindResourceW
CreateThread
CompareStringW
LoadLibraryA
ResetEvent
MulDiv
FreeResource
GetVersion
RaiseException
GlobalAddAtomW
FormatMessageW
SwitchToThread
GetExitCodeThread
GetCurrentThread
LoadLibraryExW
LockResource
GetCurrentThreadId
UnhandledExceptionFilter
VirtualQuery
GlobalFindAtomW
VirtualQueryEx
GlobalFree
Sleep
EnterCriticalSection
SetFilePointer
LoadResource
SuspendThread
GetTickCount
GetStartupInfoW
GlobalDeleteAtom
GetFileAttributesW
InitializeCriticalSection
GetThreadPriority
GetCurrentProcess
SetThreadPriority
GlobalLock
VirtualAlloc
GetSystemInfo
GetCommandLineW
LeaveCriticalSection
GetProcAddress
ResumeThread
GetVersionExW
VerifyVersionInfoW
HeapCreate
VerSetConditionMask
GetDiskFreeSpaceW
FindFirstFileW
GetUserDefaultUILanguage
lstrlenW
QueryPerformanceCounter
SetEndOfFile
HeapFree
WideCharToMultiByte
FindClose
MultiByteToWideChar
LoadLibraryW
SetEvent
CreateFileW
GetLocaleInfoW
EnumResourceNamesW
DeleteFileW
GetLocalTime
WaitForSingleObject
WriteFile
ExitThread
DeleteCriticalSection
TlsGetValue
GetDateFormatW
SetErrorMode
IsValidLocale
TlsSetValue
CreateDirectoryW
GetSystemDefaultUILanguage
EnumCalendarInfoW
LocalAlloc
RemoveDirectoryW
CreateEventW
WaitForMultipleObjectsEx
SetThreadLocale
GetThreadLocale

ole32

IsEqualGUID
OleInitialize
CoGetMalloc
OleUninitialize
CoInitialize
CoCreateInstance
CoUninitialize
CoTaskMemFree
CoTaskMemAlloc
StringFromCLSID

gdi32

Pie
SetBkMode
CreateCompatibleBitmap
GetEnhMetaFileHeader
RectVisible
AngleArc
ResizePalette
SetAbortProc
SetTextColor
StretchBlt
RoundRect
RestoreDC
SetRectRgn
GetTextMetricsW
GetWindowOrgEx
CreatePalette
PolyBezierTo
CreateICW
CreateDCW
GetStockObject
CreateSolidBrush
Polygon
MoveToEx
PlayEnhMetaFile
Ellipse
StartPage
GetBitmapBits
StartDocW
AbortDoc
GetSystemPaletteEntries
GetEnhMetaFileBits
GetEnhMetaFilePaletteEntries
CreatePenIndirect
CreateFontIndirectW
PolyBezier
EndDoc
GetObjectW
GetWinMetaFileBits
SetROP2
GetEnhMetaFileDescriptionW
ArcTo
Arc
SelectPalette
ExcludeClipRect
MaskBlt
SetWindowOrgEx
EndPage
DeleteEnhMetaFile
Chord
SetDIBits
GetViewportOrgEx
SetViewportOrgEx
CreateRectRgn
RealizePalette
SetDIBColorTable
GetDIBColorTable
CreateBrushIndirect
PatBlt
SetEnhMetaFileBits
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
GetNearestPaletteIndex
GetTextExtentPointW
ExtTextOutW
SetBrushOrgEx
GetPixel
GdiFlush
SetPixel
EnumFontFamiliesExW
StretchDIBits
GetPaletteEntries

Exports

Exports

TMethodImplementationIntercept
__dbk_fcall_wrapper
dbkFCallWrapperAddr

Sections

.text
Size: 2.5MB - Virtual size: 2.5MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 38KB - Virtual size: 38KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 25KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 13KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.didata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 154B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 72B

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: 231KB - Virtual size: 231KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 217KB - Virtual size: 217KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.debug
Size: 11.2MB - Virtual size: 11.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a22da6b9d449b9053a3371c34057dda5

Headers

File Characteristics

Imports

winspool.drv

comctl32

shell32

user32

version

oleaut32

advapi32

netapi32

msvcrt

kernel32

ole32

gdi32

Exports

Exports

Sections

.text Size: 2.5MB - Virtual size: 2.5MB

.itext Size: 6KB - Virtual size: 5KB

.data Size: 38KB - Virtual size: 38KB

.bss Size: - Virtual size: 25KB

.idata Size: 13KB - Virtual size: 12KB

.didata Size: 3KB - Virtual size: 2KB

.edata Size: 512B - Virtual size: 154B

.tls Size: - Virtual size: 72B

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

.reloc Size: 231KB - Virtual size: 231KB

.rsrc Size: 217KB - Virtual size: 217KB

.debug Size: 11.2MB - Virtual size: 11.2MB

.text
Size: 2.5MB - Virtual size: 2.5MB

.itext
Size: 6KB - Virtual size: 5KB

.data
Size: 38KB - Virtual size: 38KB

.bss
Size: - Virtual size: 25KB

.idata
Size: 13KB - Virtual size: 12KB

.didata
Size: 3KB - Virtual size: 2KB

.edata
Size: 512B - Virtual size: 154B

.tls
Size: - Virtual size: 72B

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

.reloc
Size: 231KB - Virtual size: 231KB

.rsrc
Size: 217KB - Virtual size: 217KB

.debug
Size: 11.2MB - Virtual size: 11.2MB