Postless[.]exe

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General

Target

Postless.exe
Size

861KB
MD5

290a3d722cb85d5ee0cf004fc3136729
SHA1

b8bef509983a6301b094cd4f838e2bcaff23055e
SHA256

439da9f0ad845eeafead327d4fea93b73d008671fb563d42ecd2459f83669800
SHA512

db6b3d3ed3d45e9daa82c3deb4993d5515b62b4ddc1d9bbb7b67bacd614fbc71e3699639bf829a18b295904bc1556eddc111167ec4028cef92d831b62902e3cc
SSDEEP

24576:INPx3TpzzamewHsGVA4IS2dz6uc1L9J8xVCT5ATqY2BXY6+g7:mBTDZXVMZdz6VL9J8xVCT5AT2Y6N

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Postless.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

Postless.exe
.exe windows:4 windows x86

671f2a1f8aee14d336bab98fea93d734

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Imports

advapi32

RegEnumValueA
RegEnumKeyA
RegQueryValueExA
RegSetValueExA
RegCloseKey
RegDeleteValueA
RegDeleteKeyA
AdjustTokenPrivileges
LookupPrivilegeValueA
OpenProcessToken
RegOpenKeyExA
RegCreateKeyExA

shell32

SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
SHFileOperationA
ShellExecuteExA

ole32

OleUninitialize
OleInitialize
IIDFromString
CoCreateInstance
CoTaskMemFree

comctl32

ImageList_Destroy
ord17
ImageList_AddMasked
ImageList_Create

user32

SetDlgItemTextA
GetSystemMetrics
CreatePopupMenu
AppendMenuA
OpenClipboard
EmptyClipboard
SetClipboardData
CloseClipboard
IsWindowVisible
CallWindowProcA
GetMessagePos
CheckDlgButton
LoadCursorA
SetCursor
GetSysColor
SetWindowPos
GetWindowLongA
IsWindowEnabled
SetClassLongA
GetSystemMenu
EnableMenuItem
GetWindowRect
ScreenToClient
EndDialog
RegisterClassA
SystemParametersInfoA
CreateWindowExA
GetDlgItemTextA
DialogBoxParamA
CharNextA
ExitWindowsEx
DestroyWindow
CreateDialogParamA
SetTimer
SetWindowTextA
PostQuitMessage
SetForegroundWindow
ShowWindow
wsprintfA
SendMessageTimeoutA
FindWindowExA
IsWindow
GetDlgItem
SetWindowLongA
LoadImageA
GetDC
ReleaseDC
EnableWindow
InvalidateRect
SendMessageA
DefWindowProcA
BeginPaint
GetClientRect
FillRect
DrawTextA
EndPaint
MessageBoxIndirectA
CharPrevA
PeekMessageA
GetClassInfoA
DispatchMessageA
TrackPopupMenu

gdi32

GetDeviceCaps
SetBkColor
SelectObject
DeleteObject
CreateBrushIndirect
CreateFontIndirectA
SetBkMode
SetTextColor

kernel32

CreateFileA
GetTempFileNameA
ReadFile
RemoveDirectoryA
CreateProcessA
CreateDirectoryA
GetLastError
CreateThread
GlobalLock
GlobalUnlock
GetDiskFreeSpaceA
lstrcpynA
SetErrorMode
GetVersionExA
lstrlenA
GetCommandLineA
GetTempPathA
GetWindowsDirectoryA
WriteFile
ExitProcess
CopyFileA
GetCurrentProcess
GetModuleFileNameA
GetFileSize
GetTickCount
Sleep
SetFileAttributesA
GetFileAttributesA
SetCurrentDirectoryA
MoveFileA
GetFullPathNameA
GetShortPathNameA
SearchPathA
CompareFileTime
SetFileTime
CloseHandle
lstrcmpiA
lstrcmpA
ExpandEnvironmentStringsA
GlobalFree
GlobalAlloc
GetModuleHandleA
LoadLibraryExA
FreeLibrary
MultiByteToWideChar
WritePrivateProfileStringA
GetPrivateProfileStringA
SetFilePointer
FindClose
FindNextFileA
FindFirstFileA
DeleteFileA
MulDiv
lstrcpyA
MoveFileExA
lstrcatA
WideCharToMultiByte
GetSystemDirectoryA
GetProcAddress
GetExitCodeProcess
WaitForSingleObject
SetEnvironmentVariableA

Sections

.text
Size: 25KB - Virtual size: 25KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 148KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 64KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 120KB - Virtual size: 120KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

671f2a1f8aee14d336bab98fea93d734

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

shell32

ole32

comctl32

user32

gdi32

kernel32

Sections

.text Size: 25KB - Virtual size: 25KB

.rdata Size: 5KB - Virtual size: 4KB

.data Size: 1KB - Virtual size: 148KB

.ndata Size: - Virtual size: 64KB

.rsrc Size: 120KB - Virtual size: 120KB

.text
Size: 25KB - Virtual size: 25KB

.rdata
Size: 5KB - Virtual size: 4KB

.data
Size: 1KB - Virtual size: 148KB

.ndata
Size: - Virtual size: 64KB

.rsrc
Size: 120KB - Virtual size: 120KB