renamer | 275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN[.]exe

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General

Target
275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN.exe
Size 824KB
Sample250119-x5ppsaspbj
SHA256 275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521f
MD5 f7395cb6a51d3edd0208638002567170
SHA1 f775412b9da1ead3e4f1a7e918a415d79b61c36b
SHA512 fa4e51d9ced15a77ffbcd5794d2b207e4c2cf88d831fb743b9092a249955035f46a0c7c97599aceac3110ff801b24f7ebd7e7aec92f3757f30646f0aa5d8a55a
SSDEEP 12288:3wCBtLC+EptUpQ9SeSChq3YvxFBSSRMT8PTp4ihozE4888888888888W8888888J:jNzCtUpQ9WWPBSSRMTEpXNS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

renamer

Malware Config

Signatures

Detects Renamer worm. 1 IoCs

Renamer aka Grename is worm written in Delphi.

resource	yara_rule
sample	family_renamer

Renamer family
renamer

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN.exe

File Explorer

275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN.exe

.exe 824KB

275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN.exe

IMPHASH c00b6ba7dbbc6abee9ace3a65a49ba24
SHA256 275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521f
MD5 f7395cb6a51d3edd0208638002567170
SHA1 f775412b9da1ead3e4f1a7e918a415d79b61c36b
SHA512 fa4e51d9ced15a77ffbcd5794d2b207e4c2cf88d831fb743b9092a249955035f46a0c7c97599aceac3110ff801b24f7ebd7e7aec92f3757f30646f0aa5d8a55a
SSDEEP 12288:3wCBtLC+EptUpQ9SeSChq3YvxFBSSRMT8PTp4ihozE4888888888888W8888888J:jNzCtUpQ9WWPBSSRMTEpXNS
MD5 SHA1 SHA512 SSDEEP

windows:5 windows x86 arch:x86

Detects Renamer worm.

Renamer aka Grename is worm written in Delphi.
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

703648

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_BYTES_REVERSED_LO IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_BYTES_REVERSED_HI

PDB paths

oleaut32

SysFreeString SysReAllocStringLen SysAllocStringLen GetErrorInfo SysFreeString SafeArrayPtrOfIndex SafeArrayGetUBound SafeArrayGetLBound SafeArrayCreate VariantChangeType VariantCopy VariantClear VariantInit

advapi32

RegQueryValueExW RegOpenKeyExW RegCloseKey RegUnLoadKeyW RegSetValueExW RegSaveKeyW RegRestoreKeyW RegReplaceKeyW RegQueryValueExW RegQueryInfoKeyW RegOpenKeyExW RegLoadKeyW RegFlushKey RegEnumValueW RegEnumKeyExW RegDeleteValueW RegDeleteKeyW RegCreateKeyExW RegConnectRegistryW RegCloseKey

user32

LoadStringW MessageBoxA CharNextW CreateWindowExW WindowFromPoint WaitMessage UpdateWindow UnregisterClassW UnhookWindowsHookEx TranslateMessage TranslateMDISysAccel TrackPopupMenu SystemParametersInfoW ShowWindow ShowScrollBar ShowOwnedPopups SetWindowsHookExW SetWindowTextW SetWindowPos SetWindowPlacement SetWindowLongW SetTimer SetScrollRange SetScrollPos SetScrollInfo SetRect SetPropW SetParent SetMenuItemInfoW SetMenu SetForegroundWindow SetFocus SetCursorPos SetCursor SetClassLongW SetCapture SetActiveWindow SendMessageA SendMessageW ScrollWindow ScreenToClient RemovePropW RemoveMenu ReleaseDC ReleaseCapture RegisterWindowMessageW RegisterClipboardFormatW RegisterClassW RedrawWindow PostQuitMessage PostMessageW PeekMessageA PeekMessageW OffsetRect MsgWaitForMultipleObjectsEx MsgWaitForMultipleObjects MessageBoxW MapWindowPoints MapVirtualKeyW LoadStringW LoadKeyboardLayoutW LoadIconW LoadCursorW LoadBitmapW KillTimer IsZoomed IsWindowVisible IsWindowUnicode IsWindowEnabled IsWindow IsIconic IsDialogMessageA IsDialogMessageW IsChild InvalidateRect IntersectRect InsertMenuItemW InsertMenuW InflateRect GetWindowThreadProcessId GetWindowTextW GetWindowRect GetWindowPlacement GetWindowLongW GetWindowDC GetTopWindow GetSystemMetrics GetSystemMenu GetSysColorBrush GetSysColor GetSubMenu GetScrollRange GetScrollPos GetScrollInfo GetPropW GetParent GetWindow GetMessagePos GetMessageExtraInfo GetMenuStringW GetMenuState GetMenuItemInfoW GetMenuItemID GetMenuItemCount GetMenu GetLastActivePopup GetKeyboardState GetKeyboardLayoutNameW GetKeyboardLayoutList GetKeyboardLayout GetKeyState GetKeyNameTextW GetIconInfo GetForegroundWindow GetFocus GetDesktopWindow GetDCEx GetDC GetCursorPos GetCursor GetClientRect GetClassLongW GetClassInfoW GetCapture GetActiveWindow FrameRect FindWindowExW FindWindowW FillRect EnumWindows EnumThreadWindows EnumChildWindows EndPaint EnableWindow EnableScrollBar EnableMenuItem DrawTextExW DrawTextW DrawMenuBar DrawIconEx DrawIcon DrawFrameControl DrawFocusRect DrawEdge DispatchMessageA DispatchMessageW DestroyWindow DestroyMenu DestroyIcon DestroyCursor DeleteMenu DefWindowProcW DefMDIChildProcW DefFrameProcW CreatePopupMenu CreateMenu CreateIcon CreateAcceleratorTableW CopyIcon ClientToScreen CheckMenuItem CharUpperBuffW CharNextW CharLowerW CallWindowProcW CallNextHookEx BeginPaint AdjustWindowRectEx ActivateKeyboardLayout

kernel32

lstrcmpiA LoadLibraryA LocalFree LocalAlloc GetACP Sleep VirtualFree VirtualAlloc GetSystemInfo GetTickCount QueryPerformanceCounter GetVersion GetCurrentThreadId VirtualQuery WideCharToMultiByte MultiByteToWideChar lstrlenW lstrcpynW LoadLibraryExW IsValidLocale GetSystemDefaultUILanguage GetStartupInfoA GetProcAddress GetModuleHandleW GetModuleFileNameW GetUserDefaultUILanguage GetLocaleInfoW GetLastError GetCommandLineW FreeLibrary FindFirstFileW FindClose ExitProcess ExitThread CreateThread CompareStringW WriteFile UnhandledExceptionFilter SetFilePointer SetEndOfFile RtlUnwind ReadFile RaiseException GetStdHandle GetFileSize GetFileType DeleteCriticalSection LeaveCriticalSection EnterCriticalSection InitializeCriticalSection CreateFileW CloseHandle TlsSetValue TlsGetValue LocalAlloc GetModuleHandleW lstrcpyW WriteFile WideCharToMultiByte WaitForSingleObject WaitForMultipleObjectsEx VirtualQueryEx VirtualQuery VirtualFree VirtualAlloc UpdateResourceW TryEnterCriticalSection SwitchToThread SuspendThread SizeofResource SignalObjectAndWait SetThreadPriority SetThreadLocale SetLastError SetFilePointer SetFileAttributesW SetEvent SetErrorMode SetEndOfFile ResumeThread ResetEvent ReadFile RaiseException IsDebuggerPresent OpenMutexW MultiByteToWideChar MulDiv MoveFileW LockResource LoadResource LoadLibraryW LeaveCriticalSection InitializeCriticalSection GlobalUnlock GlobalLock GlobalFree GlobalFindAtomW GlobalDeleteAtom GlobalAlloc GlobalAddAtomW GetVersionExW GetVersion GetTickCount GetThreadPriority GetThreadLocale GetStdHandle GetProcAddress GetModuleHandleW GetModuleFileNameW GetLogicalDriveStringsW GetLocaleInfoW GetLocalTime GetLastError GetFullPathNameW GetFileAttributesW GetExitCodeThread GetDriveTypeW GetDiskFreeSpaceW GetDateFormatW GetCurrentThreadId GetCurrentThread GetCurrentProcessId GetCurrentProcess GetCPInfo FreeResource InterlockedExchangeAdd InterlockedExchange InterlockedCompareExchange FreeLibrary FormatMessageW FindResourceW FindNextFileW FindFirstFileW FindClose FileTimeToLocalFileTime FileTimeToDosDateTime EnumCalendarInfoW EnterCriticalSection EndUpdateResourceW DeleteFileW DeleteCriticalSection CreateThread CreateMutexW CreateFileW CreateEventW CompareStringW CloseHandle BeginUpdateResourceW Sleep

msimg32

AlphaBlend

gdi32

UnrealizeObject StretchDIBits StretchBlt StartPage StartDocW SetWindowOrgEx SetViewportOrgEx SetTextColor SetStretchBltMode SetROP2 SetPixel SetDIBits SetDIBColorTable SetBrushOrgEx SetBkMode SetBkColor SetAbortProc SelectPalette SelectObject SaveDC RoundRect RestoreDC Rectangle RectVisible RealizePalette Polyline Polygon PolyBezierTo PolyBezier Pie PatBlt MoveToEx MaskBlt LineTo IntersectClipRect GetWindowOrgEx GetTextMetricsW GetTextExtentPoint32W GetSystemPaletteEntries GetStockObject GetRgnBox GetPixel GetPaletteEntries GetObjectW GetDeviceCaps GetDIBits GetDIBColorTable GetDCOrgEx GetCurrentPositionEx GetClipBox GetBrushOrgEx GetBitmapBits FrameRgn ExtTextOutW ExtFloodFill ExcludeClipRect EnumFontsW EnumFontFamiliesExW EndPage EndDoc Ellipse DeleteObject DeleteDC CreateSolidBrush CreateRectRgn CreatePenIndirect CreatePalette CreateICW CreateHalftonePalette CreateFontIndirectW CreateDIBitmap CreateDIBSection CreateDCW CreateCompatibleDC CreateCompatibleBitmap CreateBrushIndirect CreateBitmap Chord BitBlt Arc AbortDoc

version

VerQueryValueW GetFileVersionInfoSizeW GetFileVersionInfoW

ole32

OleUninitialize OleInitialize CoTaskMemFree StringFromCLSID CoCreateInstance CoUninitialize CoInitialize

comctl32

InitializeFlatSB FlatSB_SetScrollProp FlatSB_SetScrollPos FlatSB_SetScrollInfo FlatSB_GetScrollPos FlatSB_GetScrollInfo _TrackMouseEvent ImageList_GetImageInfo ImageList_SetIconSize ImageList_GetIconSize ImageList_Write ImageList_Read ImageList_GetDragImage ImageList_DragShowNolock ImageList_DragMove ImageList_DragLeave ImageList_DragEnter ImageList_EndDrag ImageList_BeginDrag ImageList_Copy ImageList_LoadImageW ImageList_GetIcon ImageList_Remove ImageList_DrawEx ImageList_Replace ImageList_Draw ImageList_SetOverlayImage ImageList_GetBkColor ImageList_SetBkColor ImageList_ReplaceIcon ImageList_Add ImageList_SetImageCount ImageList_GetImageCount ImageList_Destroy ImageList_Create

shell32

ShellExecuteW ExtractIconW SHGetSpecialFolderLocation SHGetPathFromIDListW

winspool.drv

OpenPrinterW EnumPrintersW DocumentPropertiesW ClosePrinter GetDefaultPrinterW

Name

.text

Size

679KB

Virtual Size

678KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.itext

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.bss

Size

Virtual Size

20KB

Characteristics

IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

13KB

Virtual Size

12KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.didata

Size

1024B

Virtual Size

670B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

Virtual Size

60B

Characteristics

IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

512B

Virtual Size

24B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

60KB

Virtual Size

60KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

57KB

Virtual Size

56KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

275a48ec3d48245f657fd2156f1ca9418cca8fb5c1dfbba7999b884ac005521fN.exe

oleaut32

advapi32

user32

kernel32

msimg32

gdi32

version

ole32

comctl32

shell32

winspool.drv

generic