2024-05-29_c50e76beb5b9ea7c8f95ee6ad615b25e_bkransomware

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General

Target

2024-05-29_c50e76beb5b9ea7c8f95ee6ad615b25e_bkransomware
Size

2.0MB
MD5

c50e76beb5b9ea7c8f95ee6ad615b25e
SHA1

e3493019b295f8858f3aaa5b4a70a528fbd1d703
SHA256

45fd0e53f452fbdb7850f694aa5312e07155867aa91f7e547f8e153fadce80eb
SHA512

2e8390593c8ff6e5a1c6f99b86a2f9065db24e8633c4304b4ffd2892ef7bcbb068d803920c0f00cc965809f87030097735762e15346a58db46ab1db35b7e06f3
SSDEEP

24576:+1RcQoVLgNwUOSOOLfYnVnx1cRQLY4ayA4AASv6LcQAzNupOxsOy2XJp5lsLp/xc:+LNjOOLfun7cRPyAd2cPzMs6Oyifu9K

Score

10^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
sample	UPX

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-05-29_c50e76beb5b9ea7c8f95ee6ad615b25e_bkransomware

Files

2024-05-29_c50e76beb5b9ea7c8f95ee6ad615b25e_bkransomware
.exe windows:5 windows x86 arch:x86

6b41fff7f2f5ab8f66a06d17e2b1d723

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetStdHandle
GetACP
IsValidCodePage
HeapQueryInformation
HeapSize
LoadLibraryExW
GetModuleHandleExW
RaiseException
IsProcessorFeaturePresent
DecodePointer
EncodePointer
RtlUnwind
GetOEMCP
GetCPInfo
GetProcessVersion
SetErrorMode
GetFileType
GetCurrentThread
GetFileTime
GetFileSize
TlsGetValue
LocalReAlloc
TlsSetValue
TlsFree
GlobalHandle
TlsAlloc
LocalAlloc
lstrcmpA
GetVersion
GlobalGetAtomNameA
GlobalAddAtomA
GlobalFindAtomA
GlobalDeleteAtom
lstrcmpiA
SetEndOfFile
UnlockFile
LockFile
FlushFileBuffers
SetFilePointer
DuplicateHandle
lstrcpynA
SetLastError
FileTimeToLocalFileTime
GetStartupInfoW
GetModuleFileNameW
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
GetEnvironmentStringsW
FreeEnvironmentStringsW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
InitializeCriticalSectionAndSpinCount
TerminateProcess
GetModuleHandleW
IsDebuggerPresent
SetEnvironmentVariableA
GetConsoleCP
GetConsoleMode
ReadConsoleW
VirtualQuery
GetStringTypeW
SetFilePointerEx
OutputDebugStringW
CompareStringW
LCMapStringW
SetStdHandle
WriteConsoleW
GetTimeZoneInformation
CreateFileW
WideCharToMultiByte
MultiByteToWideChar
GetCurrentProcess
GetWindowsDirectoryA
GetSystemDirectoryA
TerminateThread
CreateSemaphoreA
ResumeThread
ReleaseSemaphore
EnterCriticalSection
LeaveCriticalSection
GetProfileStringA
WriteFile
ReadFile
GetLastError
WaitForMultipleObjects
CreateFileA
SetEvent
FindResourceA
FileTimeToSystemTime
LocalFree
InterlockedDecrement
InterlockedIncrement
LoadResource
LockResource
lstrlenW
GetModuleFileNameA
GetCurrentThreadId
ExitProcess
CloseHandle
GlobalSize
GlobalFree
DeleteCriticalSection
InitializeCriticalSection
lstrcatA
lstrlenA
WinExec
lstrcpyA
FindNextFileA
GlobalReAlloc
HeapFree
HeapReAlloc
GetProcessHeap
HeapAlloc
GetUserDefaultLCID
GetFullPathNameA
FreeLibrary
LoadLibraryA
WritePrivateProfileStringA
GetPrivateProfileStringA
CreateThread
CreateEventA
Sleep
GlobalAlloc
GlobalLock
GlobalUnlock
GetTempPathA
FindFirstFileA
FindClose
GetFileAttributesA
DeleteFileA
SetCurrentDirectoryA
GetVolumeInformationA
GetModuleHandleA
GetProcAddress
MulDiv
GetCommandLineA
GetTickCount
CreateProcessA
WaitForSingleObject
GlobalFlags

user32

GetForegroundWindow
LoadIconA
TranslateMessage
DrawFrameControl
DrawEdge
DrawFocusRect
WindowFromPoint
GetMessageA
DispatchMessageA
SetRectEmpty
RegisterClipboardFormatA
CreateIconFromResourceEx
CreateIconFromResource
DrawIconEx
CreatePopupMenu
AppendMenuA
ModifyMenuA
CreateMenu
CreateAcceleratorTableA
GetDlgCtrlID
GetSubMenu
EnableMenuItem
ClientToScreen
EnumDisplaySettingsA
LoadImageA
SystemParametersInfoA
ShowWindow
IsWindowEnabled
TranslateAcceleratorA
GetKeyState
CopyAcceleratorTableA
PostQuitMessage
IsZoomed
GetClassInfoA
DefWindowProcA
GetMenu
SetMenu
PeekMessageA
IsIconic
SetFocus
GetActiveWindow
GetWindow
DestroyAcceleratorTable
SetWindowRgn
GetMessagePos
ScreenToClient
ChildWindowFromPointEx
CopyRect
LoadBitmapA
WinHelpA
KillTimer
SetTimer
ReleaseCapture
GetCapture
SetCapture
GetScrollRange
SetScrollRange
SetScrollPos
SetRect
InflateRect
IntersectRect
DestroyIcon
UnregisterClassA
OffsetRect
IsWindowVisible
EnableWindow
RedrawWindow
GetWindowLongA
SetWindowLongA
GetSysColor
SetActiveWindow
SetCursorPos
LoadCursorA
SetCursor
GetDC
FillRect
IsRectEmpty
ReleaseDC
IsChild
DestroyMenu
SetForegroundWindow
GetWindowRect
EqualRect
UpdateWindow
ValidateRect
InvalidateRect
GetClientRect
GetFocus
GetWindowTextA
GetWindowTextLengthA
CharUpperA
GetWindowDC
BeginPaint
EndPaint
TabbedTextOutA
DrawTextA
GrayStringA
GetDlgItem
DestroyWindow
CreateDialogIndirectParamA
EndDialog
GetNextDlgTabItem
GetWindowPlacement
RegisterWindowMessageA
GetLastActivePopup
GetMessageTime
RemovePropA
CallWindowProcA
GetPropA
UnhookWindowsHookEx
SetPropA
GetClassLongA
CallNextHookEx
SetWindowsHookExA
CreateWindowExA
GetMenuItemID
GetMenuItemCount
RegisterClassA
GetScrollPos
AdjustWindowRectEx
MapWindowPoints
SendDlgItemMessageA
ScrollWindowEx
IsDialogMessageA
SetWindowTextA
MoveWindow
CheckMenuItem
SetMenuItemBitmaps
GetMenuState
GetMenuCheckMarkDimensions
GetClassNameA
GetDesktopWindow
LoadStringA
GetSysColorBrush
GetParent
GetTopWindow
PostMessageA
IsWindow
SetParent
DestroyCursor
SendMessageA
SetWindowPos
MessageBoxA
GetCursorPos
GetSystemMetrics
EmptyClipboard
SetClipboardData
OpenClipboard
GetClipboardData
CloseClipboard
wsprintfA
WaitForInputIdle
PtInRect

gdi32

RectVisible
PtVisible
GetViewportExtEx
Escape
GetTextMetricsA
ExtTextOutA
TextOutA
ExtSelectClipRgn
SetBkColor
CreateRectRgnIndirect
SetStretchBltMode
GetClipRgn
CreatePolygonRgn
SelectClipRgn
DeleteObject
CreateDIBitmap
GetSystemPaletteEntries
CreatePalette
StretchBlt
SelectPalette
RealizePalette
GetDIBits
GetWindowExtEx
GetViewportOrgEx
GetWindowOrgEx
BeginPath
EndPath
PathToRegion
CreateEllipticRgn
CreateRoundRectRgn
GetTextColor
GetBkMode
GetBkColor
GetROP2
GetStretchBltMode
MoveToEx
ExcludeClipRect
GetClipBox
ScaleWindowExtEx
SetWindowExtEx
SetWindowOrgEx
ScaleViewportExtEx
SetViewportExtEx
OffsetViewportOrgEx
SetViewportOrgEx
SetMapMode
SetTextColor
SetROP2
SetPolyFillMode
SetBkMode
RestoreDC
SaveDC
GetPolyFillMode
CreateCompatibleBitmap
CreateDCA
CreateBitmap
SelectObject
CreatePen
PatBlt
CombineRgn
CreateRectRgn
FillRgn
CreateSolidBrush
CreateFontIndirectA
GetStockObject
GetObjectA
EndPage
EndDoc
DeleteDC
StartDocA
StartPage
BitBlt
CreateCompatibleDC
Ellipse
Rectangle
LPtoDP
DPtoLP
GetCurrentObject
RoundRect
GetTextExtentPoint32A
GetDeviceCaps
LineTo

winmm

midiStreamRestart
waveOutUnprepareHeader
waveOutPrepareHeader
waveOutWrite
waveOutPause
waveOutReset
waveOutClose
waveOutGetNumDevs
waveOutOpen
midiOutUnprepareHeader
midiStreamOpen
midiStreamProperty
midiOutPrepareHeader
midiStreamOut
midiStreamStop
midiOutReset
midiStreamClose

winspool.drv

DocumentPropertiesA
OpenPrinterA
ClosePrinter

advapi32

RegCreateKeyExA
RegQueryValueA
RegSetValueExA
RegOpenKeyExA
RegCloseKey

shell32

ShellExecuteA
Shell_NotifyIconA
SHGetSpecialFolderPathA

ole32

CLSIDFromProgID
OleRun
CoCreateInstance
CLSIDFromString
OleUninitialize
OleInitialize

oleaut32

LoadTypeLi
UnRegisterTypeLi
LHashValOfNameSys
RegisterTypeLi
SafeArrayPutElement
SafeArrayCreate
SafeArrayDestroy
SysAllocString
VariantInit
VariantCopyInd
SafeArrayGetElement
SafeArrayAccessData
SafeArrayUnaccessData
SafeArrayGetDim
SafeArrayGetLBound
SafeArrayGetUBound
VariantChangeType
VariantClear
VariantCopy

comctl32

ImageList_Destroy
ord17

ws2_32

closesocket
WSAAsyncSelect
htons
bind
htonl
send
gethostname
inet_addr
inet_ntoa
gethostbyname
WSAStartup
socket
sendto
recvfrom
ioctlsocket
connect
recv
listen
getpeername
accept
__WSAFDIsSet
shutdown
WSAGetLastError
ntohs
getsockname
WSACleanup
select

comdlg32

ChooseColorA
GetFileTitleA
GetSaveFileNameA
GetOpenFileNameA

Sections

.text
Size: 851KB - Virtual size: 851KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 1.0MB - Virtual size: 1.0MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 68KB - Virtual size: 180KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 34KB - Virtual size: 33KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 42KB - Virtual size: 41KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

6b41fff7f2f5ab8f66a06d17e2b1d723

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

winmm

winspool.drv

advapi32

shell32

ole32

oleaut32

comctl32

ws2_32

comdlg32

Sections

.text Size: 851KB - Virtual size: 851KB

.rdata Size: 1.0MB - Virtual size: 1.0MB

.data Size: 68KB - Virtual size: 180KB

.rsrc Size: 34KB - Virtual size: 33KB

.reloc Size: 42KB - Virtual size: 41KB

.text
Size: 851KB - Virtual size: 851KB

.rdata
Size: 1.0MB - Virtual size: 1.0MB

.data
Size: 68KB - Virtual size: 180KB

.rsrc
Size: 34KB - Virtual size: 33KB

.reloc
Size: 42KB - Virtual size: 41KB