Welcomer[.]zip

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General

Target

Welcomer.zip
Size

904KB
MD5

d64c1a7c40a781e549c36be96aec3fb7
SHA1

d0daa323868f2e17ce7d658526250e01c60d0b0b
SHA256

d3a2400fb38e597dc6fcd22b23235568508fab1bb9890a02f82a1240cbb43e33
SHA512

37d283c6ab07a1c461b855f61e2eb6d7208e81fdeb782abcab8f9b4c02acceb762ba80f8a6ae09cc087845cdf3b0be1e7a86792581bfa45c48545bda8ba3d9c5
SSDEEP

24576:P01MTkSqkp22Ck7J3iON0quPPXyNHYapedo7ATW4:ewYBkF7Wfq/ey7a

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
static1/unpack001/v1/desktop.exe.vir	upx

Unsigned PE 3 IoCs

Checks for missing Authenticode signature.

resource
unpack001/v1/desktop.exe.vir
unpack002/out.upx
unpack001/v2/welcomer.exe.vir

Files

Welcomer.zip
.zip
v1/a.ahk
v1/desktop.exe.vir
.exe windows x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Sections

UPX0
Size: - Virtual size: 968KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 433KB - Virtual size: 436KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 365KB - Virtual size: 368KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Sections

.text
Size: 712KB - Virtual size: 711KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 223KB - Virtual size: 222KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 14KB - Virtual size: 47KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 28KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 370KB - Virtual size: 370KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
v2/welcomer.bat
v2/welcomer.exe.vir
.exe windows x86

46978de0f8944a65af1673d613222a98

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

wsock32

WSACleanup
inet_addr
gethostbyname
gethostname
WSAStartup

winmm

mixerSetControlDetails
waveOutGetVolume
joyGetPosEx
mixerGetControlDetailsW
mixerOpen
mixerGetDevCapsW
mixerGetLineControlsW
waveOutSetVolume
mixerClose
mciSendStringW
joyGetDevCapsW
mixerGetLineInfoW

version

VerQueryValueW
GetFileVersionInfoW
GetFileVersionInfoSizeW

comctl32

ImageList_Create
CreateStatusWindowW
ImageList_ReplaceIcon
InitCommonControlsEx
ImageList_GetIconSize
ImageList_Destroy
ImageList_AddMasked

psapi

GetModuleBaseNameW
GetModuleFileNameExW

kernel32

FindNextFileW
FindClose
FileTimeToLocalFileTime
SetEnvironmentVariableW
Beep
MoveFileW
OutputDebugStringW
CreateProcessW
GetFileAttributesW
WideCharToMultiByte
MultiByteToWideChar
GetExitCodeProcess
WriteProcessMemory
ReadProcessMemory
GetCurrentProcessId
OpenProcess
TerminateProcess
SetPriorityClass
SetLastError
GetEnvironmentVariableW
GetLocalTime
GetDateFormatW
GetTimeFormatW
GetDiskFreeSpaceW
SetVolumeLabelW
CreateFileW
DeviceIoControl
GetDriveTypeW
GetVolumeInformationW
CreateDirectoryW
ReadFile
WriteFile
DeleteFileW
SetFileAttributesW
LocalFileTimeToFileTime
SetFileTime
GetFileSizeEx
GetSystemTime
GetSystemDefaultUILanguage
GetComputerNameW
GetWindowsDirectoryW
GetTempPathW
GetFullPathNameW
GetShortPathNameW
FindFirstFileW
FreeLibrary
EnterCriticalSection
LeaveCriticalSection
VirtualProtect
QueryDosDeviceW
CompareStringW
RemoveDirectoryW
CopyFileW
GetCurrentProcess
FormatMessageW
GetPrivateProfileStringW
GetPrivateProfileSectionW
GetPrivateProfileSectionNamesW
WritePrivateProfileStringW
WritePrivateProfileSectionW
SetEndOfFile
GetACP
GetFileType
GetStdHandle
SetFilePointerEx
SystemTimeToFileTime
FileTimeToSystemTime
GetFileSize
VirtualAllocEx
VirtualFreeEx
EnumResourceNamesW
LoadLibraryExW
GlobalSize
GetOEMCP
InterlockedDecrement
InterlockedIncrement
GetStartupInfoW
HeapSetInformation
GetCommandLineW
HeapQueryInformation
HeapSize
HeapFree
HeapReAlloc
ExitProcess
HeapAlloc
TlsFree
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
HeapCreate
InitializeCriticalSectionAndSpinCount
LockResource
LoadResource
SizeofResource
FindResourceW
GetSystemTimeAsFileTime
GetModuleFileNameW
DeleteCriticalSection
GetCPInfo
GetVersionExW
GetModuleHandleW
GetProcAddress
GetLastError
CreateMutexW
CloseHandle
GetExitCodeThread
SetThreadPriority
CreateThread
lstrcmpiW
GetCurrentThreadId
GlobalUnlock
GlobalFree
GlobalAlloc
GlobalLock
GetCurrentDirectoryW
SetErrorMode
InitializeCriticalSection
SetCurrentDirectoryW
Sleep
GetTickCount
MulDiv
IsValidCodePage
TlsAlloc
TlsGetValue
SetHandleCount
IsProcessorFeaturePresent
GetStringTypeW
RaiseException
LCMapStringW
RtlUnwind
GetConsoleCP
GetConsoleMode
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
TlsSetValue
SetFilePointer
FlushFileBuffers
WriteConsoleW
SetStdHandle
GetProcessHeap
LoadLibraryW
VirtualQuery

user32

GetMenuItemCount
GetMenuItemID
GetSubMenu
GetMenuStringW
ExitWindowsEx
SetMenu
FlashWindow
MapWindowPoints
RedrawWindow
SetParent
GetClassInfoExW
GetAncestor
UpdateWindow
GetMessagePos
GetClassLongW
DefDlgProcW
CallWindowProcW
CheckRadioButton
IntersectRect
PtInRect
CreateAcceleratorTableW
DestroyAcceleratorTable
InsertMenuItemW
SetMenuDefaultItem
RemoveMenu
SetMenuItemInfoW
IsMenu
GetMenuItemInfoW
CreateMenu
CreatePopupMenu
SetMenuInfo
AppendMenuW
DestroyMenu
TrackPopupMenuEx
CreateIconIndirect
GetDesktopWindow
CopyImage
CreateIconFromResourceEx
EnumClipboardFormats
GetWindow
BringWindowToTop
GetTopWindow
GetIconInfo
SetWindowTextW
IsWindowVisible
CheckMenuItem
MessageBoxW
LoadImageW
GetLastInputInfo
SetClipboardViewer
LoadAcceleratorsW
EnableMenuItem
CreateWindowExW
RegisterClassExW
LoadCursorW
DestroyIcon
DestroyWindow
IsCharAlphaW
MapVirtualKeyW
GetSysColorBrush
VkKeyScanExW
GetWindowTextW
mouse_event
WindowFromPoint
GetSystemMetrics
keybd_event
SetKeyboardState
GetKeyboardState
GetCursorPos
GetAsyncKeyState
AttachThreadInput
SendInput
UnregisterHotKey
RegisterHotKey
PostQuitMessage
SendMessageTimeoutW
UnhookWindowsHookEx
SetWindowsHookExW
PostThreadMessageW
IsCharUpperW
IsCharLowerW
IsCharAlphaNumericW
ToUnicodeEx
GetKeyboardLayout
CallNextHookEx
CharLowerW
ReleaseDC
GetDC
OpenClipboard
GetClipboardData
GetClipboardFormatNameW
CloseClipboard
SetClipboardData
EmptyClipboard
PostMessageW
FindWindowW
EndDialog
IsWindow
DispatchMessageW
GetCursor
ClientToScreen
MessageBeep
IsWindowEnabled
SetDlgItemTextW
GetDlgItem
SendDlgItemMessageW
DialogBoxParamW
SetForegroundWindow
DefWindowProcW
FillRect
ChangeClipboardChain
DrawIconEx
TranslateMessage
ShowWindow
CountClipboardFormats
SetWindowLongW
ScreenToClient
IsDialogMessageW
SendMessageW
GetWindowLongW
GetKeyState
TranslateAcceleratorW
GetSysColor
RegisterWindowMessageW
IsIconic
IsZoomed
EnumWindows
GetWindowTextLengthW
EnableWindow
InvalidateRect
SetLayeredWindowAttributes
SetWindowPos
SetWindowRgn
SetFocus
GetGUIThreadInfo
SetActiveWindow
EnumChildWindows
MoveWindow
GetQueueStatus
GetWindowRect
GetClientRect
SystemParametersInfoW
AdjustWindowRectEx
KillTimer
PeekMessageW
GetFocus
GetClassNameW
GetWindowThreadProcessId
GetForegroundWindow
GetMessageW
SetTimer
GetParent
GetDlgCtrlID
CharUpperW
IsClipboardFormatAvailable
DrawTextW
MapVirtualKeyExW
SetRect
GetMenu

gdi32

GetPixel
GetClipBox
GetCharABCWidthsW
SetBkMode
EnumFontFamiliesExW
CreateDIBSection
GdiFlush
ExcludeClipRect
SetBkColor
SetTextColor
FillRgn
BitBlt
CreateCompatibleBitmap
GetSystemPaletteEntries
GetDIBits
CreateCompatibleDC
CreatePolygonRgn
CreateRectRgn
CreateRoundRectRgn
CreateEllipticRgn
DeleteDC
GetObjectW
GetTextMetricsW
GetTextFaceW
SelectObject
GetStockObject
CreateDCW
CreateSolidBrush
CreateFontW
GetClipRgn
GetDeviceCaps
DeleteObject

comdlg32

CommDlgExtendedError
GetOpenFileNameW
GetSaveFileNameW

advapi32

RegDeleteKeyW
RegSetValueExW
RegCreateKeyExW
RegQueryValueExW
AdjustTokenPrivileges
LookupPrivilegeValueW
OpenProcessToken
CloseServiceHandle
UnlockServiceDatabase
LockServiceDatabase
OpenSCManagerW
GetUserNameW
RegEnumKeyExW
RegEnumValueW
RegQueryInfoKeyW
RegOpenKeyExW
RegCloseKey
RegConnectRegistryW
RegDeleteValueW

shell32

DragQueryPoint
SHFileOperationW
SHGetPathFromIDListW
SHBrowseForFolderW
SHGetDesktopFolder
SHGetMalloc
SHGetFolderPathW
ShellExecuteExW
Shell_NotifyIconW
DragFinish
DragQueryFileW
ExtractIconW

ole32

OleInitialize
OleUninitialize
CoCreateInstance
CoInitialize
CoUninitialize
CLSIDFromString
CoGetObject
StringFromGUID2
CreateStreamOnHGlobal

oleaut32

SafeArrayGetLBound
GetActiveObject
OleLoadPicture
SafeArrayUnaccessData
SafeArrayGetElemsize
SafeArrayAccessData
SafeArrayUnlock
SafeArrayPtrOfIndex
SafeArrayLock
SafeArrayGetDim
SafeArrayDestroy
SafeArrayGetUBound
VariantCopyInd
SafeArrayCopy
SysAllocString
VariantChangeType
VariantClear
SafeArrayCreate
SysFreeString
SysStringLen

Sections

.text
Size: 626KB - Virtual size: 626KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 140KB - Virtual size: 139KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 12KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 24KB - Virtual size: 23KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 968KB

UPX1 Size: 433KB - Virtual size: 436KB

.rsrc Size: 365KB - Virtual size: 368KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 712KB - Virtual size: 711KB

.rdata Size: 223KB - Virtual size: 222KB

.data Size: 14KB - Virtual size: 47KB

.pdata Size: 28KB - Virtual size: 27KB

.tls Size: 512B - Virtual size: 9B

.rsrc Size: 370KB - Virtual size: 370KB

46978de0f8944a65af1673d613222a98

Headers

File Characteristics

Imports

wsock32

winmm

version

comctl32

psapi

kernel32

user32

gdi32

comdlg32

advapi32

shell32

ole32

oleaut32

Sections

.text Size: 626KB - Virtual size: 626KB

.rdata Size: 140KB - Virtual size: 139KB

.data Size: 12KB - Virtual size: 40KB

.rsrc Size: 24KB - Virtual size: 23KB

UPX0
Size: - Virtual size: 968KB

UPX1
Size: 433KB - Virtual size: 436KB

.rsrc
Size: 365KB - Virtual size: 368KB

.text
Size: 712KB - Virtual size: 711KB

.rdata
Size: 223KB - Virtual size: 222KB

.data
Size: 14KB - Virtual size: 47KB

.pdata
Size: 28KB - Virtual size: 27KB

.tls
Size: 512B - Virtual size: 9B

.rsrc
Size: 370KB - Virtual size: 370KB

.text
Size: 626KB - Virtual size: 626KB

.rdata
Size: 140KB - Virtual size: 139KB

.data
Size: 12KB - Virtual size: 40KB

.rsrc
Size: 24KB - Virtual size: 23KB