UrgentLetter[.]exe

Sharing

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General

Target

UrgentLetter.exe
Size

1.0MB
MD5

45c2b08410b8f5894d8edb236c0123ae
SHA1

27c5b04a8c14ccb9da80c3cfddc84b26adeb0b5a
SHA256

8621da5b9713636533e1781bb2f8f9bcc028cb85fb6dd141e447db31d076d381
SHA512

bdaa30171beab91dd300c28c4ede2ed5d0977e220f1b58052809e317a8a9726af924484733f631d961c83b52f1d0f6c8d8f1b840d260ea9b6188b8cb3dae40b6
SSDEEP

24576:AAHnh+eWsN3skA4RV1Hom2KXMmHa6rlihVXHC5:3h+ZkldoPK8Ya6rsh1Y

Score

5^/10

Malware Config

Signatures

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
sample	autoit_exe

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
UrgentLetter.exe

Files

UrgentLetter.exe
.exe windows:5 windows x86 arch:x86

eb97e4fc5518ac300a92a11673825e0b

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

wsock32

WSACleanup
socket
inet_ntoa
setsockopt
ntohs
recvfrom
ioctlsocket
htons
WSAStartup
__WSAFDIsSet
select
accept
listen
bind
closesocket
WSAGetLastError
recv
sendto
send
inet_addr
gethostbyname
gethostname
connect

version

GetFileVersionInfoW
GetFileVersionInfoSizeW
VerQueryValueW

winmm

timeGetTime
waveOutSetVolume
mciSendStringW

comctl32

ImageList_ReplaceIcon
ImageList_Destroy
ImageList_Remove
ImageList_SetDragCursorImage
ImageList_BeginDrag
ImageList_DragEnter
ImageList_DragLeave
ImageList_EndDrag
ImageList_DragMove
InitCommonControlsEx
ImageList_Create

mpr

WNetUseConnectionW
WNetCancelConnection2W
WNetGetConnectionW
WNetAddConnection2W

wininet

InternetQueryDataAvailable
InternetCloseHandle
InternetOpenW
InternetSetOptionW
InternetCrackUrlW
HttpQueryInfoW
InternetQueryOptionW
HttpOpenRequestW
HttpSendRequestW
FtpOpenFileW
FtpGetFileSize
InternetOpenUrlW
InternetReadFile
InternetConnectW

psapi

GetProcessMemoryInfo

iphlpapi

IcmpCreateFile
IcmpCloseHandle
IcmpSendEcho

userenv

DestroyEnvironmentBlock
UnloadUserProfile
CreateEnvironmentBlock
LoadUserProfileW

uxtheme

IsThemeActive

kernel32

DuplicateHandle
CreateThread
WaitForSingleObject
HeapAlloc
GetProcessHeap
HeapFree
Sleep
GetCurrentThreadId
MultiByteToWideChar
MulDiv
GetVersionExW
IsWow64Process
GetSystemInfo
FreeLibrary
LoadLibraryA
GetProcAddress
SetErrorMode
GetModuleFileNameW
WideCharToMultiByte
lstrcpyW
lstrlenW
GetModuleHandleW
QueryPerformanceCounter
VirtualFreeEx
OpenProcess
VirtualAllocEx
WriteProcessMemory
ReadProcessMemory
CreateFileW
SetFilePointerEx
SetEndOfFile
ReadFile
WriteFile
FlushFileBuffers
TerminateProcess
CreateToolhelp32Snapshot
Process32FirstW
Process32NextW
SetFileTime
GetFileAttributesW
FindFirstFileW
SetCurrentDirectoryW
GetLongPathNameW
GetShortPathNameW
DeleteFileW
FindNextFileW
CopyFileExW
MoveFileW
CreateDirectoryW
RemoveDirectoryW
SetSystemPowerState
QueryPerformanceFrequency
FindResourceW
LoadResource
LockResource
SizeofResource
EnumResourceNamesW
OutputDebugStringW
GetTempPathW
GetTempFileNameW
DeviceIoControl
GetLocalTime
CompareStringW
GetCurrentProcess
EnterCriticalSection
LeaveCriticalSection
GetStdHandle
CreatePipe
InterlockedExchange
TerminateThread
LoadLibraryExW
FindResourceExW
CopyFileW
VirtualFree
FormatMessageW
GetExitCodeProcess
GetPrivateProfileStringW
WritePrivateProfileStringW
GetPrivateProfileSectionW
WritePrivateProfileSectionW
GetPrivateProfileSectionNamesW
FileTimeToLocalFileTime
FileTimeToSystemTime
SystemTimeToFileTime
LocalFileTimeToFileTime
GetDriveTypeW
GetDiskFreeSpaceExW
GetDiskFreeSpaceW
GetVolumeInformationW
SetVolumeLabelW
CreateHardLinkW
SetFileAttributesW
CreateEventW
SetEvent
GetEnvironmentVariableW
SetEnvironmentVariableW
GlobalLock
GlobalUnlock
GlobalAlloc
GetFileSize
GlobalFree
GlobalMemoryStatusEx
Beep
GetSystemDirectoryW
HeapReAlloc
HeapSize
GetComputerNameW
GetWindowsDirectoryW
GetCurrentProcessId
GetProcessIoCounters
CreateProcessW
GetProcessId
SetPriorityClass
LoadLibraryW
VirtualAlloc
IsDebuggerPresent
GetCurrentDirectoryW
lstrcmpiW
DecodePointer
GetLastError
RaiseException
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
InterlockedDecrement
InterlockedIncrement
GetCurrentThread
CloseHandle
GetFullPathNameW
EncodePointer
ExitProcess
GetModuleHandleExW
ExitThread
GetSystemTimeAsFileTime
ResumeThread
GetCommandLineW
IsProcessorFeaturePresent
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
SetLastError
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetStartupInfoW
GetStringTypeW
SetStdHandle
GetFileType
GetConsoleCP
GetConsoleMode
RtlUnwind
ReadConsoleW
GetTimeZoneInformation
GetDateFormatW
GetTimeFormatW
LCMapStringW
GetEnvironmentStringsW
FreeEnvironmentStringsW
WriteConsoleW
FindClose
SetEnvironmentVariableA

user32

AdjustWindowRectEx
CopyImage
SetWindowPos
GetCursorInfo
RegisterHotKey
ClientToScreen
GetKeyboardLayoutNameW
IsCharAlphaW
IsCharAlphaNumericW
IsCharLowerW
IsCharUpperW
GetMenuStringW
GetSubMenu
GetCaretPos
IsZoomed
MonitorFromPoint
GetMonitorInfoW
SetWindowLongW
SetLayeredWindowAttributes
FlashWindow
GetClassLongW
TranslateAcceleratorW
IsDialogMessageW
GetSysColor
InflateRect
DrawFocusRect
DrawTextW
FrameRect
DrawFrameControl
FillRect
PtInRect
DestroyAcceleratorTable
CreateAcceleratorTableW
SetCursor
GetWindowDC
GetSystemMetrics
GetActiveWindow
CharNextW
wsprintfW
RedrawWindow
DrawMenuBar
DestroyMenu
SetMenu
GetWindowTextLengthW
CreateMenu
IsDlgButtonChecked
DefDlgProcW
CallWindowProcW
ReleaseCapture
SetCapture
CreateIconFromResourceEx
mouse_event
ExitWindowsEx
SetActiveWindow
FindWindowExW
EnumThreadWindows
SetMenuDefaultItem
InsertMenuItemW
IsMenu
TrackPopupMenuEx
GetCursorPos
DeleteMenu
SetRect
GetMenuItemID
GetMenuItemCount
SetMenuItemInfoW
GetMenuItemInfoW
SetForegroundWindow
IsIconic
FindWindowW
MonitorFromRect
keybd_event
SendInput
GetAsyncKeyState
SetKeyboardState
GetKeyboardState
GetKeyState
VkKeyScanW
LoadStringW
DialogBoxParamW
MessageBeep
EndDialog
SendDlgItemMessageW
GetDlgItem
SetWindowTextW
CopyRect
ReleaseDC
GetDC
EndPaint
BeginPaint
GetClientRect
GetMenu
DestroyWindow
EnumWindows
GetDesktopWindow
IsWindow
IsWindowEnabled
IsWindowVisible
EnableWindow
InvalidateRect
GetWindowLongW
GetWindowThreadProcessId
AttachThreadInput
GetFocus
GetWindowTextW
ScreenToClient
SendMessageTimeoutW
EnumChildWindows
CharUpperBuffW
GetParent
GetDlgCtrlID
SendMessageW
MapVirtualKeyW
PostMessageW
GetWindowRect
SetUserObjectSecurity
CloseDesktop
CloseWindowStation
OpenDesktopW
SetProcessWindowStation
GetProcessWindowStation
OpenWindowStationW
GetUserObjectSecurity
MessageBoxW
DefWindowProcW
SetClipboardData
EmptyClipboard
CountClipboardFormats
CloseClipboard
GetClipboardData
IsClipboardFormatAvailable
OpenClipboard
BlockInput
GetMessageW
LockWindowUpdate
DispatchMessageW
TranslateMessage
PeekMessageW
UnregisterHotKey
CheckMenuRadioItem
CharLowerBuffW
MoveWindow
SetFocus
PostQuitMessage
KillTimer
CreatePopupMenu
RegisterWindowMessageW
SetTimer
ShowWindow
CreateWindowExW
RegisterClassExW
LoadIconW
LoadCursorW
GetSysColorBrush
GetForegroundWindow
MessageBoxA
DestroyIcon
SystemParametersInfoW
LoadImageW
GetClassNameW

gdi32

StrokePath
DeleteObject
GetTextExtentPoint32W
ExtCreatePen
GetDeviceCaps
EndPath
SetPixel
CloseFigure
CreateCompatibleBitmap
CreateCompatibleDC
SelectObject
StretchBlt
GetDIBits
LineTo
AngleArc
MoveToEx
Ellipse
DeleteDC
GetPixel
CreateDCW
GetStockObject
GetTextFaceW
CreateFontW
SetTextColor
PolyDraw
BeginPath
Rectangle
SetViewportOrgEx
GetObjectW
SetBkMode
RoundRect
SetBkColor
CreatePen
CreateSolidBrush
StrokeAndFillPath

comdlg32

GetOpenFileNameW
GetSaveFileNameW

advapi32

GetAce
RegEnumValueW
RegDeleteValueW
RegDeleteKeyW
RegEnumKeyExW
RegSetValueExW
RegOpenKeyExW
RegCloseKey
RegQueryValueExW
RegConnectRegistryW
InitializeSecurityDescriptor
InitializeAcl
AdjustTokenPrivileges
OpenThreadToken
OpenProcessToken
LookupPrivilegeValueW
DuplicateTokenEx
CreateProcessAsUserW
CreateProcessWithLogonW
GetLengthSid
CopySid
LogonUserW
AllocateAndInitializeSid
CheckTokenMembership
RegCreateKeyExW
FreeSid
GetTokenInformation
GetSecurityDescriptorDacl
GetAclInformation
AddAce
SetSecurityDescriptorDacl
GetUserNameW
InitiateSystemShutdownExW

shell32

DragQueryPoint
ShellExecuteExW
DragQueryFileW
SHEmptyRecycleBinW
SHGetPathFromIDListW
SHBrowseForFolderW
SHCreateShellItem
SHGetDesktopFolder
SHGetSpecialFolderLocation
SHGetFolderPathW
SHFileOperationW
ExtractIconExW
Shell_NotifyIconW
ShellExecuteW
DragFinish

ole32

CoTaskMemAlloc
CoTaskMemFree
CLSIDFromString
ProgIDFromCLSID
CLSIDFromProgID
OleSetMenuDescriptor
MkParseDisplayName
OleSetContainedObject
CoCreateInstance
IIDFromString
StringFromGUID2
CreateStreamOnHGlobal
OleInitialize
OleUninitialize
CoInitialize
CoUninitialize
GetRunningObjectTable
CoGetInstanceFromFile
CoGetObject
CoSetProxyBlanket
CoCreateInstanceEx
CoInitializeSecurity

oleaut32

LoadTypeLibEx
VariantCopyInd
SysReAllocString
SysFreeString
SafeArrayDestroyDescriptor
SafeArrayDestroyData
SafeArrayUnaccessData
SafeArrayAccessData
SafeArrayAllocData
SafeArrayAllocDescriptorEx
SafeArrayCreateVector
RegisterTypeLi
CreateStdDispatch
DispCallFunc
VariantChangeType
SysStringLen
VariantTimeToSystemTime
VarR8FromDec
SafeArrayGetVartype
VariantCopy
VariantClear
OleLoadPicture
QueryPathOfRegTypeLi
RegisterTypeLibForUser
UnRegisterTypeLibForUser
UnRegisterTypeLi
CreateDispTypeInfo
SysAllocString
VariantInit

Sections

.text
Size: 568KB - Virtual size: 567KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 191KB - Virtual size: 191KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 20KB - Virtual size: 35KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 217KB - Virtual size: 216KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 28KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

eb97e4fc5518ac300a92a11673825e0b

Headers

DLL Characteristics

File Characteristics

Imports

wsock32

version

winmm

comctl32

mpr

wininet

psapi

iphlpapi

userenv

uxtheme

kernel32

user32

gdi32

comdlg32

advapi32

shell32

ole32

oleaut32

Sections

.text Size: 568KB - Virtual size: 567KB

.rdata Size: 191KB - Virtual size: 191KB

.data Size: 20KB - Virtual size: 35KB

.rsrc Size: 217KB - Virtual size: 216KB

.reloc Size: 28KB - Virtual size: 28KB

.text
Size: 568KB - Virtual size: 567KB

.rdata
Size: 191KB - Virtual size: 191KB

.data
Size: 20KB - Virtual size: 35KB

.rsrc
Size: 217KB - Virtual size: 216KB

.reloc
Size: 28KB - Virtual size: 28KB