ChkFlsh[.]exe | Triage

Sharing

Copy URL

Twitter E-mail

General

Target

ChkFlsh.exe
Size

789KB
MD5

333bf03fa3c393d3a1c68730b00b4da9
SHA1

e7e44947730d0e9d67f0461a35dc9f9807adc5d4
SHA256

3e088d7d3b3b26853edb825d6fd0b165bb76c803f096f58c679ac7dd7ff1524b
SHA512

e1953c12c28020d50bceeb9f45edf1413b0bf481dfa1d7763f42026db48387d3ca83d5042bb2989ea3840e152c8734ec98d8587e98d0a1ba736d63b724222b7c
SSDEEP

24576:4pDwgx6AY88gbH20AjDtlaW2vXcoWbm2:4xwC6lp

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
ChkFlsh.exe

Files

ChkFlsh.exe
.exe windows:4 windows x86

f372e5fb3e88269a23611f4416f1262e

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

oleaut32

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

advapi32

RegQueryValueExA
RegOpenKeyExA
RegCloseKey
RegQueryValueExA
RegOpenKeyExA
RegFlushKey
RegCloseKey

user32

GetKeyboardType
DestroyWindow
LoadStringA
MessageBoxA
CharNextA
CreateWindowExA
WindowFromPoint
WaitMessage
UpdateWindow
UnregisterClassA
UnhookWindowsHookEx
TranslateMessage
TranslateMDISysAccel
TrackPopupMenu
SystemParametersInfoA
ShowWindow
ShowScrollBar
ShowOwnedPopups
SetWindowsHookExA
SetWindowTextA
SetWindowPos
SetWindowPlacement
SetWindowLongW
SetWindowLongA
SetTimer
SetScrollRange
SetScrollPos
SetScrollInfo
SetRect
SetPropA
SetParent
SetMenuItemInfoA
SetMenu
SetForegroundWindow
SetFocus
SetCursor
SetClassLongA
SetCapture
SetActiveWindow
SendMessageW
SendMessageA
ScrollWindow
ScreenToClient
RemovePropA
RemoveMenu
ReleaseDC
ReleaseCapture
RegisterWindowMessageA
RegisterClipboardFormatA
RegisterClassA
RedrawWindow
PtInRect
PostQuitMessage
PostMessageA
PeekMessageW
PeekMessageA
OffsetRect
OemToCharA
MessageBoxA
MessageBeep
MapWindowPoints
MapVirtualKeyA
LockWindowUpdate
LoadStringA
LoadKeyboardLayoutA
LoadIconA
LoadCursorA
LoadBitmapA
KillTimer
IsZoomed
IsWindowVisible
IsWindowUnicode
IsWindowEnabled
IsWindow
IsRectEmpty
IsIconic
IsDialogMessageW
IsDialogMessageA
IsChild
InvalidateRect
IntersectRect
InsertMenuItemA
InsertMenuA
InflateRect
GetWindowThreadProcessId
GetWindowTextA
GetWindowRect
GetWindowPlacement
GetWindowLongW
GetWindowLongA
GetWindowDC
GetUpdateRect
GetTopWindow
GetSystemMetrics
GetSystemMenu
GetSysColorBrush
GetSysColor
GetSubMenu
GetScrollRange
GetScrollPos
GetScrollInfo
GetPropA
GetParent
GetWindow
GetMessagePos
GetMenuStringA
GetMenuState
GetMenuItemInfoA
GetMenuItemID
GetMenuItemCount
GetMenu
GetLastActivePopup
GetKeyboardState
GetKeyboardLayoutNameA
GetKeyboardLayoutList
GetKeyboardLayout
GetKeyState
GetKeyNameTextA
GetIconInfo
GetForegroundWindow
GetFocus
GetDlgItem
GetDesktopWindow
GetDCEx
GetDC
GetCursorPos
GetCursor
GetClientRect
GetClassNameA
GetClassLongA
GetClassInfoA
GetCapture
GetActiveWindow
FrameRect
FindWindowA
FillRect
EqualRect
EnumWindows
EnumThreadWindows
EnumChildWindows
EndPaint
EnableWindow
EnableScrollBar
EnableMenuItem
DrawTextA
DrawMenuBar
DrawIconEx
DrawIcon
DrawFrameControl
DrawFocusRect
DrawEdge
DispatchMessageW
DispatchMessageA
DestroyWindow
DestroyMenu
DestroyIcon
DestroyCursor
DeleteMenu
DefWindowProcA
DefMDIChildProcA
DefFrameProcA
CreatePopupMenu
CreateMenu
CreateIcon
ClientToScreen
ChildWindowFromPoint
CheckMenuItem
CallWindowProcA
CallNextHookEx
BeginPaint
CharNextA
CharLowerBuffA
CharLowerA
CharUpperBuffA
CharToOemA
AdjustWindowRectEx
ActivateKeyboardLayout

kernel32

GetACP
Sleep
VirtualFree
VirtualAlloc
GetTickCount
QueryPerformanceCounter
GetCurrentThreadId
InterlockedDecrement
InterlockedIncrement
VirtualQuery
WideCharToMultiByte
MultiByteToWideChar
lstrlenA
lstrcpynA
LoadLibraryExA
GetThreadLocale
GetStartupInfoA
GetProcAddress
GetModuleHandleA
GetModuleFileNameA
GetLocaleInfoA
GetLastError
GetCommandLineA
FreeLibrary
FindFirstFileA
FindClose
ExitProcess
CompareStringA
WriteFile
UnhandledExceptionFilter
SetFilePointer
SetEndOfFile
RtlUnwind
ReadFile
RaiseException
GetStdHandle
GetFileSize
GetFileType
CreateFileA
CloseHandle
TlsSetValue
TlsGetValue
LocalAlloc
GetModuleHandleA
lstrcpyA
lstrcmpA
WriteFile
WaitForSingleObject
VirtualQuery
VirtualAlloc
SizeofResource
SetThreadLocale
SetLastError
SetFilePointer
SetEvent
SetErrorMode
SetEndOfFile
ResetEvent
ReadFile
MultiByteToWideChar
MulDiv
LockResource
LoadResource
LoadLibraryA
LeaveCriticalSection
InitializeCriticalSection
GlobalUnlock
GlobalLock
GlobalFree
GlobalFindAtomA
GlobalDeleteAtom
GlobalAlloc
GlobalAddAtomA
GetVolumeInformationA
GetVersionExA
GetVersion
GetTickCount
GetThreadLocale
GetStdHandle
GetProfileStringA
GetProcAddress
GetModuleHandleA
GetModuleFileNameA
GetLogicalDriveStringsA
GetLocaleInfoA
GetLocalTime
GetLastError
GetFullPathNameA
GetFileSize
GetFileAttributesA
GetDriveTypeA
GetDiskFreeSpaceA
GetDateFormatA
GetCurrentThreadId
GetCurrentProcessId
GetCPInfo
FreeResource
InterlockedExchange
FreeLibrary
FormatMessageA
FlushFileBuffers
FindResourceA
FindFirstFileA
FindClose
EnumCalendarInfoA
EnterCriticalSection
DeviceIoControl
DeleteFileA
DeleteCriticalSection
CreateThread
CreateFileA
CreateEventA
CompareStringA
CloseHandle
Sleep

gdi32

UnrealizeObject
StretchBlt
StartPage
StartDocA
SetWindowOrgEx
SetViewportOrgEx
SetTextColor
SetStretchBltMode
SetROP2
SetPixel
SetMapMode
SetDIBColorTable
SetBrushOrgEx
SetBkMode
SetBkColor
SetAbortProc
SelectPalette
SelectObject
SelectClipRgn
SaveDC
RoundRect
RestoreDC
Rectangle
RectVisible
RealizePalette
Polyline
PatBlt
MoveToEx
MaskBlt
LineTo
IntersectClipRect
GetWindowOrgEx
GetTextMetricsA
GetTextExtentPoint32A
GetSystemPaletteEntries
GetStockObject
GetRgnBox
GetPixel
GetPaletteEntries
GetObjectA
GetDeviceCaps
GetDIBits
GetDIBColorTable
GetDCOrgEx
GetCurrentPositionEx
GetClipBox
GetBrushOrgEx
GetBitmapBits
ExtTextOutA
ExcludeClipRect
EndPage
EndDoc
Ellipse
DeleteObject
DeleteDC
CreateSolidBrush
CreateRectRgn
CreatePenIndirect
CreatePalette
CreateICA
CreateHalftonePalette
CreateFontIndirectA
CreateDIBitmap
CreateDIBSection
CreateDCA
CreateCompatibleDC
CreateCompatibleBitmap
CreateBrushIndirect
CreateBitmap
BitBlt

version

VerQueryValueA
GetFileVersionInfoSizeA
GetFileVersionInfoA

ole32

CreateBindCtx
CoTaskMemFree
CoTaskMemAlloc
CoCreateInstance
CoUninitialize
CoInitialize
CLSIDFromString

comctl32

_TrackMouseEvent
ImageList_SetIconSize
ImageList_GetIconSize
ImageList_Write
ImageList_Read
ImageList_GetDragImage
ImageList_DragShowNolock
ImageList_DragMove
ImageList_DragLeave
ImageList_DragEnter
ImageList_EndDrag
ImageList_BeginDrag
ImageList_Remove
ImageList_DrawEx
ImageList_Replace
ImageList_Draw
ImageList_GetBkColor
ImageList_SetBkColor
ImageList_Add
ImageList_SetImageCount
ImageList_GetImageCount
ImageList_Destroy
ImageList_Create
InitCommonControls

urlmon

MkParseDisplayNameEx

winspool.drv

OpenPrinterA
EnumPrintersA
DocumentPropertiesA
ClosePrinter

comdlg32

GetSaveFileNameA
GetOpenFileNameA

Sections

.text
Size: 671KB - Virtual size: 670KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 14KB - Virtual size: 13KB

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: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: - Virtual size: 56B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 43KB - Virtual size: 43KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f372e5fb3e88269a23611f4416f1262e

Headers

File Characteristics

Imports

oleaut32

advapi32

user32

kernel32

gdi32

version

ole32

comctl32

urlmon

winspool.drv

comdlg32

Sections

.text Size: 671KB - Virtual size: 670KB

.itext Size: 2KB - Virtual size: 2KB

.data Size: 14KB - Virtual size: 13KB

.bss Size: - Virtual size: 25KB

.idata Size: 11KB - Virtual size: 11KB

.tls Size: - Virtual size: 56B

.rdata Size: 512B - Virtual size: 24B

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

.rsrc Size: 43KB - Virtual size: 43KB

.text
Size: 671KB - Virtual size: 670KB

.itext
Size: 2KB - Virtual size: 2KB

.data
Size: 14KB - Virtual size: 13KB

.bss
Size: - Virtual size: 25KB

.idata
Size: 11KB - Virtual size: 11KB

.tls
Size: - Virtual size: 56B

.rdata
Size: 512B - Virtual size: 24B

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

.rsrc
Size: 43KB - Virtual size: 43KB