dcrat | Nursultan[.]exe

General

Target
Nursultan.exe
Size 1.7MB
Sample240603-d7gmeabc56
SHA256 cf1f6eb66912ff5ad30f8940accdb1df9bb2f8f8cdf3f8d45a4febd48c5641b9
MD5 167a7a1acbb331c7120f7c523b77b63a
SHA1 e4ab977acdb17dbbf2caa51a75d7fb67c4dc433b
SHA512 2145a9c4414e814e2d6d88c403e0ade70eef266b1307f8c2cdc3822a7829e5e2273932f128981c96cfede5d719b5e9a0654c4fb395f19e74dd2bb020cf501a3f
SSDEEP 24576:P2G/nvxW3WayX0tmpK3Xgjh1gMTVn/8E6Oqi4yEBCknTXCZ/UzGGq1lM/XP2YFn+:PbA37ykwpKM+sHWyGXvAIbFCZ2XC1f
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

rat dcrat

Malware Config

Signatures

DCRat payload 1 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
sample	dcrat

Dcrat family
dcrat

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Nursultan.exe

File Explorer

Nursultan.exe

.exe 1.7MB

Nursultan.exe

IMPHASH fcf1390e9ce472c7270447fc5c61a0c1
SHA256 cf1f6eb66912ff5ad30f8940accdb1df9bb2f8f8cdf3f8d45a4febd48c5641b9
MD5 167a7a1acbb331c7120f7c523b77b63a
SHA1 e4ab977acdb17dbbf2caa51a75d7fb67c4dc433b
SHA512 2145a9c4414e814e2d6d88c403e0ade70eef266b1307f8c2cdc3822a7829e5e2273932f128981c96cfede5d719b5e9a0654c4fb395f19e74dd2bb020cf501a3f
SSDEEP 24576:P2G/nvxW3WayX0tmpK3Xgjh1gMTVn/8E6Oqi4yEBCknTXCZ/UzGGq1lM/XP2YFn+:PbA37ykwpKM+sHWyGXvAIbFCZ2XC1f
MD5 SHA1 SHA512 SSDEEP

windows:5 windows x86 arch:x86

DCRat payload

Detects payload of DCRat, commonly dropped by NSIS installers.

rat
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

1

Major OS version

5

Entry point

126016

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_GUARD_CF IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE

PDB paths

D:\Projects\WinRAR\sfx\build\sfxrar32\Release\sfxrar.pdb

kernel32

GetLastError SetLastError FormatMessageW GetCurrentProcess DeviceIoControl SetFileTime CloseHandle CreateDirectoryW RemoveDirectoryW CreateFileW DeleteFileW CreateHardLinkW GetShortPathNameW GetLongPathNameW MoveFileW GetFileType GetStdHandle WriteFile ReadFile FlushFileBuffers SetEndOfFile SetFilePointer SetFileAttributesW GetFileAttributesW FindClose FindFirstFileW FindNextFileW GetVersionExW GetCurrentDirectoryW GetFullPathNameW FoldStringW GetModuleFileNameW GetModuleHandleW FindResourceW FreeLibrary GetProcAddress GetCurrentProcessId ExitProcess SetThreadExecutionState Sleep LoadLibraryW GetSystemDirectoryW CompareStringW AllocConsole FreeConsole AttachConsole WriteConsoleW GetProcessAffinityMask CreateThread SetThreadPriority InitializeCriticalSection EnterCriticalSection LeaveCriticalSection DeleteCriticalSection SetEvent ResetEvent ReleaseSemaphore WaitForSingleObject CreateEventW CreateSemaphoreW GetSystemTime SystemTimeToTzSpecificLocalTime TzSpecificLocalTimeToSystemTime SystemTimeToFileTime FileTimeToLocalFileTime LocalFileTimeToFileTime FileTimeToSystemTime GetCPInfo IsDBCSLeadByte MultiByteToWideChar WideCharToMultiByte GlobalAlloc LockResource GlobalLock GlobalUnlock GlobalFree LoadResource SizeofResource SetCurrentDirectoryW GetExitCodeProcess GetLocalTime GetTickCount MapViewOfFile UnmapViewOfFile CreateFileMappingW OpenFileMappingW GetCommandLineW SetEnvironmentVariableW ExpandEnvironmentStringsW GetTempPathW MoveFileExW GetLocaleInfoW GetTimeFormatW GetDateFormatW GetNumberFormatW SetFilePointerEx GetConsoleMode GetConsoleCP HeapSize SetStdHandle GetProcessHeap RaiseException GetSystemInfo VirtualProtect VirtualQuery LoadLibraryExA IsProcessorFeaturePresent IsDebuggerPresent UnhandledExceptionFilter SetUnhandledExceptionFilter GetStartupInfoW QueryPerformanceCounter GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead TerminateProcess RtlUnwind EncodePointer InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree LoadLibraryExW QueryPerformanceFrequency GetModuleHandleExW GetModuleFileNameA GetACP HeapFree HeapAlloc HeapReAlloc GetStringTypeW LCMapStringW FindFirstFileExA FindNextFileA IsValidCodePage GetOEMCP GetCommandLineA GetEnvironmentStringsW FreeEnvironmentStringsW DecodePointer

gdiplus

GdiplusShutdown GdiplusStartup GdipCreateHBITMAPFromBitmap GdipCreateBitmapFromStreamICM GdipCreateBitmapFromStream GdipDisposeImage GdipCloneImage GdipFree GdipAlloc

Name

.text

Size

196KB

Virtual Size

196KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

42KB

Virtual Size

41KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

4KB

Virtual Size

141KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.didat

Size

512B

Virtual Size

392B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

84KB

Virtual Size

84KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

Nursultan.exe

kernel32

gdiplus

generic