CsOyna[.]exe | Triage

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General

Target

CsOyna.exe
Size

16.5MB
MD5

49c3f8477077879aa3c8378d6f59591e
SHA1

7bb37183ac872c529bd7c383f472444a98ec3d7a
SHA256

ab6ca19622cd91cf9eaec32c7d6461f96ab496518be958c6464473eeabba4592
SHA512

a0dfe13b4b9c97973f862e8624f12f5f85abddc02a1e8d61cbdc03acd27d645765bbb74fc92273575e414b5e799e14fc7200dbb11595f6bd9787baab35b6384d
SSDEEP

98304:uJm8ffZbpnEVo+Q7JWFx3NGjQEOWaTSjWVRnpDYM9o11owalZLCwpokCFCxJD9Ls:urfhhiQ7A9GMVXB9DVG1x7

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
CsOyna.exe

Files

CsOyna.exe
.exe windows:5 windows x86 arch:x86

320465b84c4c02956cfda31fd6561fae

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
SafeArrayPtrOfIndex
SafeArrayGetUBound
SafeArrayGetLBound
SafeArrayCreate
VariantChangeType
VariantCopy
VariantClear
VariantInit
GetErrorInfo
GetActiveObject
SysFreeString

advapi32

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

user32

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

kernel32

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

gdi32

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

version

VerQueryValueW
GetFileVersionInfoSizeW
GetFileVersionInfoW

netapi32

NetWkstaGetInfo

ole32

CreateStreamOnHGlobal
OleRegEnumVerbs
IsAccelerator
OleDraw
OleSetMenuDescriptor
OleUninitialize
OleInitialize
CoTaskMemFree
CoTaskMemAlloc
ProgIDFromCLSID
StringFromCLSID
CoCreateInstance
CoGetClassObject
CoUninitialize
CoInitialize
IsEqualGUID

comctl32

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

msvcrt

memset
memcpy

shell32

ShellExecuteW
Shell_NotifyIconW

winspool.drv

OpenPrinterW
EnumPrintersW
DocumentPropertiesW
ClosePrinter
GetDefaultPrinterW

Exports

Exports

TMethodImplementationIntercept
dbkFCallWrapperAddr

Sections

.text
Size: 2.7MB - Virtual size: 2.7MB

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: 51KB - Virtual size: 50KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 22KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

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: 122B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: - Virtual size: 64B

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: 251KB - Virtual size: 251KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 189KB - Virtual size: 189KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.debug
Size: 13.2MB - Virtual size: 13.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

320465b84c4c02956cfda31fd6561fae

Headers

File Characteristics

Imports

oleaut32

advapi32

user32

kernel32

gdi32

version

netapi32

ole32

comctl32

msvcrt

shell32

winspool.drv

Exports

Exports

Sections

.text Size: 2.7MB - Virtual size: 2.7MB

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

.data Size: 51KB - Virtual size: 50KB

.bss Size: - Virtual size: 22KB

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

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

.edata Size: 512B - Virtual size: 122B

.tls Size: - Virtual size: 64B

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

.reloc Size: 251KB - Virtual size: 251KB

.rsrc Size: 189KB - Virtual size: 189KB

.debug Size: 13.2MB - Virtual size: 13.2MB

.text
Size: 2.7MB - Virtual size: 2.7MB

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

.data
Size: 51KB - Virtual size: 50KB

.bss
Size: - Virtual size: 22KB

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

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

.edata
Size: 512B - Virtual size: 122B

.tls
Size: - Virtual size: 64B

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

.reloc
Size: 251KB - Virtual size: 251KB

.rsrc
Size: 189KB - Virtual size: 189KB

.debug
Size: 13.2MB - Virtual size: 13.2MB