dcrat | DCRatBuild[.]exe

General

Target
DCRatBuild.exe
Size 1.1MB
Sample240530-ja322abg32
SHA256 2a74767d7f14e9b65318f9210bf2371ed08b46ae1eb49f6367e20d5d82dad470
MD5 2ab8ff5b7621758d77e24b1852beb01a
SHA1 b0ad327f9d520c8d9b3043c0944a4f8c85bca394
SHA512 78cd9729e7b55b06aa95242e7d9fde36b31b52031fe9c6319d3acacbe2c5a7682c955f7cca1c838465b011d84fcf4d633de49478cd7a26ae65b299126e5abe29
SSDEEP 24576:U2G/nvxW3Ww0tHiU0YJ2/+Fv/maIfrLeEhsnW4S9:UbA30HiU0Yg+RIGEh/D
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
DCRatBuild.exe

File Explorer

DCRatBuild.exe

.exe 1.1MB

DCRatBuild.exe

IMPHASH fcf1390e9ce472c7270447fc5c61a0c1
SHA256 2a74767d7f14e9b65318f9210bf2371ed08b46ae1eb49f6367e20d5d82dad470
MD5 2ab8ff5b7621758d77e24b1852beb01a
SHA1 b0ad327f9d520c8d9b3043c0944a4f8c85bca394
SHA512 78cd9729e7b55b06aa95242e7d9fde36b31b52031fe9c6319d3acacbe2c5a7682c955f7cca1c838465b011d84fcf4d633de49478cd7a26ae65b299126e5abe29
SSDEEP 24576:U2G/nvxW3Ww0tHiU0YJ2/+Fv/maIfrLeEhsnW4S9:UbA30HiU0Yg+RIGEh/D
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

56KB

Virtual Size

55KB

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

DCRatBuild.exe

kernel32

gdiplus

generic