Static task
static1
Behavioral task
behavioral1
Sample
yasaatar.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
yasaatar.exe
Resource
win10v2004-20230220-en
General
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Target
yasaatar.exe
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Size
3.7MB
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MD5
4a72c4fa1cfadbee5ac298fa2a82dcde
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SHA1
66819248d925e23b6683d02fa4a9aa327e629977
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SHA256
c94ba8011af63b0eead35a7d6974cf276c068cc6cb7b9fb2f8bf03ad548cd0fd
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SHA512
ac0ddacf5338ca78fcd337643675aa94035d74a053741cb2aeb40059ce46e9fb140094fd850d47867c04c767d0f18cfe8857f01730c07626a0e5663d43319b51
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SSDEEP
98304:3d3fbPX4wQrKh6NtzaO3sqDMhx+BaW8mb8xD2jIX:hzIqsGAsqIDe8mYxCo
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource yasaatar.exe
Files
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yasaatar.exe.exe windows x86
2f667e9ffea9864719b55a2c0ee44a60
Headers
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
kernel32
FindFirstFileA
GetVersionExA
FindClose
GetPrivateProfileStringA
GetModuleFileNameA
GetDriveTypeA
WinExec
SetCurrentDirectoryA
MoveFileExA
GetTempPathA
GetCurrentProcess
lstrcatA
SetFileTime
GetWindowsDirectoryA
GetSystemDirectoryA
WritePrivateProfileStringA
GetShortPathNameA
LoadLibraryA
lstrlenA
GetDiskFreeSpaceA
FreeLibrary
GlobalAlloc
GlobalLock
IsBadCodePtr
MultiByteToWideChar
FreeEnvironmentStringsA
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetOEMCP
GetACP
GetCPInfo
LCMapStringW
LCMapStringA
WideCharToMultiByte
IsBadWritePtr
HeapReAlloc
VirtualAlloc
VirtualFree
HeapCreate
HeapDestroy
GetEnvironmentVariableA
GetVersion
GetCommandLineA
GetStartupInfoA
GetModuleHandleA
RaiseException
RtlUnwind
CreateDirectoryA
HeapCompact
HeapSize
SetFileAttributesA
MoveFileA
DeleteFileA
HeapAlloc
GetFileAttributesA
TerminateProcess
GetLastError
ExitProcess
GlobalHandle
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetCurrentDirectoryA
GetFullPathNameA
GetProcAddress
GlobalUnlock
GlobalFree
GetEnvironmentStringsW
SetHandleCount
GetEnvironmentStrings
GetFileType
GetStringTypeA
GetStdHandle
IsBadReadPtr
CreateFileA
ReadFile
WriteFile
SetFilePointer
CloseHandle
GetStringTypeW
HeapFree
user32
SetTimer
IsWindowVisible
DestroyWindow
SendDlgItemMessageA
MessageBoxA
GetMessageA
IsDialogMessageA
CreateDialogIndirectParamA
GetDlgItemTextA
DispatchMessageA
TranslateMessage
SetWindowPos
wsprintfA
SetWindowTextA
GetDlgItem
ScreenToClient
GetWindowRect
SetFocus
EnableWindow
SetDlgItemTextA
BeginPaint
SendMessageA
EndPaint
RegisterWindowMessageA
OemToCharA
GetParent
GetDC
ReleaseDC
GetClientRect
DrawTextA
FillRect
GetWindow
GetSysColor
CreateWindowExA
LoadIconA
LoadCursorA
RegisterClassA
FindWindowA
GetLastActivePopup
BringWindowToTop
GetSystemMetrics
AdjustWindowRectEx
UpdateWindow
IsIconic
RedrawWindow
PostQuitMessage
DefWindowProcA
PostMessageA
GetWindowLongA
SetWindowLongA
IsDlgButtonChecked
ExitWindowsEx
ShowWindow
CheckDlgButton
KillTimer
gdi32
AddFontResourceA
ExtTextOutA
SetBkColor
GetStockObject
CreateSolidBrush
DeleteObject
CreateFontIndirectA
GetObjectA
CreatePalette
GetSystemPaletteEntries
GetDeviceCaps
StretchDIBits
RealizePalette
SelectPalette
IntersectClipRect
CreateDIBPatternBrush
SetTextColor
SetBkMode
SelectObject
DeleteDC
BitBlt
CreateCompatibleBitmap
CreateCompatibleDC
comdlg32
GetSaveFileNameA
advapi32
AdjustTokenPrivileges
RegQueryValueA
OpenProcessToken
LookupPrivilegeValueA
RegQueryValueExA
RegOpenKeyA
RegOpenKeyExA
RegCreateKeyA
RegSetValueExA
RegCloseKey
shell32
ShellExecuteA
SHGetSpecialFolderLocation
SHGetPathFromIDListA
ole32
CoCreateInstance
OleInitialize
OleUninitialize
version
GetFileVersionInfoSizeA
GetFileVersionInfoA
VerQueryValueA
VerFindFileA
Sections
.text Size: 48KB - Virtual size: 47KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 8KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 12KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ