2024-08-18_f6f06dbbdbc47f31c394d1b4e9983d91_avoslocker

Sharing

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General

Target

2024-08-18_f6f06dbbdbc47f31c394d1b4e9983d91_avoslocker
Size

2.2MB
MD5

f6f06dbbdbc47f31c394d1b4e9983d91
SHA1

71f1df28792e665b31e962e684a64f52f144e619
SHA256

72e53df366df3b0cc5823e5e89565043d54346ebf4ccfa30a920f890d822050d
SHA512

d68d872fb763fb1aea1c7bc02fcbce3ba79b10c233039afa42b35f145cf97f5899dd6ae95f025963828bdcb3b766acbebe6b7cdf8c955860214e04f1a087323f
SSDEEP

49152:huQ4B22A6vmzB2jq5mFdOiQiX9N/1QuDDAygBIY0mY7VvOQr41:hUI8mz8+5mzOiQiX9NtQuDDAygBIY0ml

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-08-18_f6f06dbbdbc47f31c394d1b4e9983d91_avoslocker

Files

2024-08-18_f6f06dbbdbc47f31c394d1b4e9983d91_avoslocker
.exe windows:6 windows x86 arch:x86

1353a068e7e8264f13d895a94be491c3

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

PDB Paths

D:\tiancj\Downloads\bk_writer\Release\bk_writer.pdb

Imports

kernel32

IsValidCodePage
FindNextFileW
FindFirstFileExW
SetFilePointerEx
ReadConsoleW
GetConsoleMode
GetConsoleCP
GetTimeZoneInformation
EnumSystemLocalesW
IsValidLocale
ExitProcess
GetFileType
FreeEnvironmentStringsW
GetModuleHandleExW
FreeLibraryAndExitThread
ExitThread
VirtualQuery
VirtualAlloc
GetSystemInfo
RtlUnwind
GetStringTypeW
LCMapStringW
CompareStringW
OutputDebugStringW
GetEnvironmentStringsW
SetEnvironmentVariableW
InitializeSListHead
CreateFileW
GetSystemTimeAsFileTime
GetStartupInfoW
IsDebuggerPresent
CreateEventW
WaitForSingleObjectEx
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
SetStdHandle
SearchPathA
GetProfileIntA
GetTempPathA
VerifyVersionInfoA
VerSetConditionMask
GetWindowsDirectoryA
FindResourceExW
lstrcpyA
GetACP
GetCPInfo
GetOEMCP
VirtualProtect
SystemTimeToTzSpecificLocalTime
GetFileSizeEx
UnhandledExceptionFilter
GetFileAttributesExA
FileTimeToLocalFileTime
FileTimeToSystemTime
GlobalFlags
GetUserDefaultUILanguage
GetSystemDefaultUILanguage
GetLocaleInfoW
ResumeThread
SetThreadPriority
SetEvent
LocalReAlloc
LocalAlloc
GlobalHandle
GlobalReAlloc
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSection
GetVolumeInformationA
lstrcmpiA
GetCurrentProcess
DuplicateHandle
UnlockFile
SetFilePointer
SetEndOfFile
LockFile
GetFileSize
FlushFileBuffers
FindFirstFileA
FindClose
DeleteFileA
GetCurrentProcessId
GlobalGetAtomNameA
GlobalFindAtomA
GlobalAddAtomA
lstrcmpW
LoadLibraryA
GetSystemDirectoryW
EncodePointer
GetUserDefaultLCID
GetTempFileNameA
GetFullPathNameA
GetFileTime
GetFileAttributesA
SetErrorMode
CompareStringA
lstrcmpA
GlobalDeleteAtom
LoadLibraryW
LoadLibraryExW
GetProcAddress
GetModuleHandleW
GetModuleFileNameW
GetVersionExA
GetCurrentThreadId
GetCurrentThread
OutputDebugStringA
SetLastError
CopyFileA
MulDiv
GlobalFree
GlobalUnlock
GlobalLock
GlobalSize
GlobalAlloc
FormatMessageA
CancelIo
FreeLibrary
ResetEvent
GetProcessHeap
DecodePointer
HeapAlloc
RaiseException
HeapReAlloc
HeapSize
HeapFree
GetLocalTime
WaitForSingleObject
GetTickCount
GetCurrentDirectoryA
GetDriveTypeA
GetLogicalDriveStringsA
MultiByteToWideChar
ReadFile
ClearCommError
GetOverlappedResult
WriteFile
PurgeComm
SetCommTimeouts
GetCommTimeouts
SetupComm
SetCommState
GetCommState
EscapeCommFunction
SetCommMask
CreateEventA
CreateFileA
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
LocalFree
GetCommandLineW
GetStdHandle
CloseHandle
CreateThread
QueryPerformanceCounter
QueryPerformanceFrequency
WritePrivateProfileStringA
GetPrivateProfileStringA
GetModuleFileNameA
GetPrivateProfileIntA
GetSystemDefaultLCID
FindResourceW
SizeofResource
WideCharToMultiByte
GetLastError
GetModuleHandleA
GetCommandLineA
Sleep
LockResource
LoadResource
FindResourceA
HeapQueryInformation
WriteConsoleW

user32

GetMessageA
CopyImage
LoadCursorA
GetSysColorBrush
CharUpperA
IsZoomed
ReuseDDElParam
UnpackDDElParam
LoadImageA
DestroyIcon
IntersectRect
InsertMenuItemA
DestroyMenu
CreatePopupMenu
LoadMenuA
TranslateAcceleratorA
LoadAcceleratorsA
BringWindowToTop
GetWindowDC
TabbedTextOutA
GrayStringA
DrawTextExA
DrawTextA
GetDesktopWindow
GetActiveWindow
GetNextDlgTabItem
EndDialog
CreateDialogIndirectParamA
GetWindowThreadProcessId
SystemParametersInfoA
LoadCursorW
IsRectEmpty
FillRect
ClientToScreen
GetCursorPos
SetCursor
SetWindowRgn
DrawIcon
GetSystemMetrics
ReleaseCapture
SetCapture
InvalidateRect
OffsetRect
MapVirtualKeyA
GetKeyNameTextA
IsDialogMessageA
SetWindowTextA
IsWindowEnabled
SendDlgItemMessageA
IsDlgButtonChecked
CheckDlgButton
SetDlgItemTextA
MoveWindow
ShowWindow
GetMonitorInfoA
MonitorFromWindow
WinHelpA
GetScrollInfo
SetScrollInfo
LoadIconW
LoadIconA
CallNextHookEx
SetWindowsHookExA
GetLastActivePopup
GetTopWindow
GetClassNameA
GetClassLongA
SetWindowLongA
PtInRect
EqualRect
GetSysColor
MapWindowPoints
ScreenToClient
MessageBoxA
AdjustWindowRectEx
GetClientRect
GetWindowTextLengthA
GetWindowTextA
RemovePropA
GetPropA
SetPropA
ShowScrollBar
GetScrollRange
SetScrollRange
GetScrollPos
SetScrollPos
ScrollWindow
RedrawWindow
ValidateRect
EndPaint
BeginPaint
SetForegroundWindow
GetForegroundWindow
SetActiveWindow
UpdateWindow
TranslateMessage
ShowOwnedPopups
DeleteMenu
LockWindowUpdate
EnableWindow
SendMessageA
SetTimer
TrackPopupMenu
SetMenu
GetMenu
GetCapture
GetKeyState
GetDlgCtrlID
GetDlgItem
IsIconic
EndDeferWindowPos
DeferWindowPos
BeginDeferWindowPos
SetWindowPlacement
GetWindowPlacement
SetWindowPos
IsMenu
CreateWindowExA
GetClassInfoExA
RealChildWindowFromPoint
LoadAcceleratorsW
LoadMenuW
GetMenuItemInfoA
InflateRect
GetAsyncKeyState
MapDialogRect
TrackMouseEvent
LoadImageW
UnionRect
GetSystemMenu
SetParent
WindowFromPoint
SetRect
GetNextDlgGroupItem
DrawFocusRect
DrawIconEx
GetIconInfo
MessageBeep
EnableScrollBar
HideCaret
InvertRect
KillTimer
PostMessageA
GetParent
LoadBitmapW
GetWindowLongA
UnregisterDeviceNotification
GetMenuStringA
GetMenuState
GetSubMenu
GetMenuItemID
GetMenuItemCount
InsertMenuA
AppendMenuA
RemoveMenu
PostQuitMessage
UnhookWindowsHookEx
IsWindow
IsChild
DestroyWindow
IsWindowVisible
GetFocus
GetDC
ReleaseDC
SetRectEmpty
CopyRect
CheckMenuItem
EnableMenuItem
SetMenuItemBitmaps
GetMenuCheckMarkDimensions
SetMenuItemInfoA
SetFocus
GetWindowRect
UpdateLayeredWindow
MonitorFromPoint
GetComboBoxInfo
PostThreadMessageA
WaitMessage
GetKeyboardLayout
IsCharLowerA
MapVirtualKeyExA
GetKeyboardState
GetWindow
RegisterWindowMessageA
DispatchMessageA
PeekMessageA
GetMessagePos
GetMessageTime
DefWindowProcA
CallWindowProcA
RegisterClassA
GetClassInfoA
ToAsciiEx
CreateAcceleratorTableA
DestroyAcceleratorTable
CopyAcceleratorTableA
SetMenuDefaultItem
GetDoubleClickTime
ModifyMenuA
RegisterClipboardFormatA
CharUpperBuffA
IsClipboardFormatAvailable
GetUpdateRect
DrawMenuBar
DefFrameProcA
DefMDIChildProcA
TranslateMDISysAccel
SubtractRect
CreateMenu
GetWindowRgn
DestroyCursor
FrameRect
CopyIcon
SetCursorPos
DrawFrameControl
DrawEdge
SetClassLongA
DrawStateA
EmptyClipboard
SetClipboardData
CloseClipboard
OpenClipboard
NotifyWinEvent
GetMenuDefaultItem
SetLayeredWindowAttributes
EnumDisplayMonitors

gdi32

DPtoLP
LPtoDP
CreateHatchBrush
CreatePen
CreatePatternBrush
CreateRectRgn
CreateSolidBrush
DeleteDC
Escape
ExcludeClipRect
GetClipBox
GetObjectType
GetPixel
GetStockObject
GetViewportExtEx
GetWindowExtEx
IntersectClipRect
LineTo
PtVisible
RectVisible
RestoreDC
SaveDC
SelectClipRgn
ExtSelectClipRgn
SelectPalette
SetBkMode
SetMapMode
SetLayout
GetLayout
SetPolyFillMode
SetROP2
SetTextAlign
MoveToEx
TextOutA
ExtTextOutA
SetViewportExtEx
SetViewportOrgEx
SetWindowExtEx
CreateDIBSection
OffsetViewportOrgEx
OffsetWindowOrgEx
ScaleViewportExtEx
ScaleWindowExtEx
GetTextExtentPoint32A
GetTextMetricsA
CombineRgn
SetRectRgn
GetBkColor
EnumFontFamiliesExA
CreatePalette
GetNearestPaletteIndex
GetPaletteEntries
GetSystemPaletteEntries
RealizePalette
CreateDIBitmap
EnumFontFamiliesA
GetTextCharsetInfo
SetPixel
StretchBlt
SetDIBColorTable
GetTextColor
CreatePolygonRgn
Polygon
Polyline
CreateRoundRectRgn
Rectangle
GetRgnBox
OffsetRgn
RoundRect
FillRgn
FrameRgn
GetBoundsRect
PtInRegion
ExtFloodFill
SetPaletteEntries
SetPixelV
GetWindowOrgEx
GetViewportOrgEx
GetTextFaceA
SelectObject
Ellipse
DeleteObject
CreateEllipticRgn
BitBlt
PatBlt
CreateRectRgnIndirect
GetObjectA
SetTextColor
SetBkColor
CreateBitmap
CreateFontIndirectA
CreateCompatibleDC
CreateCompatibleBitmap
GetDeviceCaps
SetWindowOrgEx
CreateDCA
CopyMetaFileA

msimg32

TransparentBlt
AlphaBlend

winspool.drv

DocumentPropertiesA
ClosePrinter
OpenPrinterA

advapi32

RegEnumKeyExA
RegSetValueExA
RegDeleteValueA
RegQueryValueA
RegEnumKeyA
RegDeleteKeyA
RegCreateKeyExA
RegQueryValueExA
RegOpenKeyExA
RegCloseKey
RegEnumValueA
RegOpenKeyA

shell32

DragFinish
DragQueryFileA
CommandLineToArgvW
ShellExecuteA
SHAppBarMessage
SHGetFileInfoA
SHGetDesktopFolder
SHGetSpecialFolderLocation
SHGetPathFromIDListA
SHBrowseForFolderA

shlwapi

PathIsUNCA
PathStripToRootA
PathFindExtensionA
PathRemoveFileSpecW
StrFormatKBSizeA
PathFindFileNameA

uxtheme

GetThemeSysColor
GetWindowTheme
DrawThemeText
DrawThemeBackground
IsThemeBackgroundPartiallyTransparent
DrawThemeParentBackground
OpenThemeData
CloseThemeData
GetThemePartSize
IsAppThemed
GetThemeColor
GetCurrentThemeName

ole32

RevokeDragDrop
RegisterDragDrop
CoLockObjectExternal
OleGetClipboard
OleCreateMenuDescriptor
OleDestroyMenuDescriptor
DoDragDrop
OleTranslateAccelerator
IsAccelerator
OleLockRunning
CreateStreamOnHGlobal
CoInitialize
CoDisconnectObject
CoCreateInstance
CoInitializeEx
CoCreateGuid
CoUninitialize
ReleaseStgMedium
OleDuplicateData
CoTaskMemFree
CoTaskMemAlloc

oleaut32

SysFreeString
SysAllocStringByteLen
SysAllocString
VarBstrFromDate
VariantCopy
SysAllocStringLen
SystemTimeToVariantTime
SysStringLen
LoadTypeLi
VariantChangeType
VariantClear
VariantInit
VariantTimeToSystemTime

winmm

timeEndPeriod
timeBeginPeriod
PlaySoundA

hid

HidD_GetAttributes
HidD_GetNumInputBuffers
HidD_SetNumInputBuffers
HidD_GetPreparsedData
HidP_GetCaps
HidD_FlushQueue
HidD_GetHidGuid

setupapi

SetupDiGetClassDevsA
SetupDiEnumDeviceInterfaces
SetupDiDestroyDeviceInfoList
SetupDiGetDeviceInterfaceDetailA

gdiplus

GdipCreateBitmapFromStream
GdipGetImagePaletteSize
GdipGetImagePalette
GdipGetImagePixelFormat
GdipGetImageHeight
GdipGetImageWidth
GdipGetImageGraphicsContext
GdipDisposeImage
GdipCloneImage
GdipBitmapLockBits
GdipBitmapUnlockBits
GdipDeleteGraphics
GdipDrawImageI
GdipCreateBitmapFromHBITMAP
GdipCreateFromHDC
GdipFree
GdipAlloc
GdiplusShutdown
GdipSetInterpolationMode
GdipDrawImageRectI
GdipCreateBitmapFromScan0
GdiplusStartup

oleacc

CreateStdAccessibleObject
LresultFromObject
AccessibleObjectFromWindow

imm32

ImmReleaseContext
ImmGetOpenStatus
ImmGetContext

Sections

.text
Size: 1.6MB - Virtual size: 1.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 364KB - Virtual size: 363KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 21KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 50KB - Virtual size: 50KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 145KB - Virtual size: 145KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

1353a068e7e8264f13d895a94be491c3

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

msimg32

winspool.drv

advapi32

shell32

shlwapi

uxtheme

ole32

oleaut32

winmm

hid

setupapi

gdiplus

oleacc

imm32

Sections

.text Size: 1.6MB - Virtual size: 1.6MB

.rdata Size: 364KB - Virtual size: 363KB

.data Size: 21KB - Virtual size: 40KB

.rsrc Size: 50KB - Virtual size: 50KB

.reloc Size: 145KB - Virtual size: 145KB

.text
Size: 1.6MB - Virtual size: 1.6MB

.rdata
Size: 364KB - Virtual size: 363KB

.data
Size: 21KB - Virtual size: 40KB

.rsrc
Size: 50KB - Virtual size: 50KB

.reloc
Size: 145KB - Virtual size: 145KB