dcrat | a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269[.]exe

General

Target
a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269.exe
Size 1.1MB
Sample261025-pgn5cav13p
SHA256 a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269
MD5 25df8c46e6c294d62702eeb6d8a228d8
SHA1 3040a1c5b725855cd5c942a21a7bbb0840af40bb
SHA512 82cbfc88c740a1adb4d80fcb989355c0155a75e90faae0db44579d4a2dfaa8a6cb5d57d466266ffc942bb189c24efd1764ff33e427417be18cd7a1b27d1956e1
SSDEEP 24576:U2G/nvxW3Ww0t7fSykY5JdXYAhbVba6jAkmk30IgYuvm:UbA307fSqJd3r730/+
TLSH
T190454A017E44CA12F0191633C2FF4A044BB4AC51AAA6E72B7EF9376E55123937D1DACB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

rat infostealer dcrat

Malware Config

Signatures

Family: DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat

DCRat payload 1 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
sample	dcrat

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269.exe

File Explorer

a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269.exe

.exe 1.1MB

a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269.exe

IMPHASH fcf1390e9ce472c7270447fc5c61a0c1
SHA256 a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269
MD5 25df8c46e6c294d62702eeb6d8a228d8
SHA1 3040a1c5b725855cd5c942a21a7bbb0840af40bb
SHA512 82cbfc88c740a1adb4d80fcb989355c0155a75e90faae0db44579d4a2dfaa8a6cb5d57d466266ffc942bb189c24efd1764ff33e427417be18cd7a1b27d1956e1
SSDEEP 24576:U2G/nvxW3Ww0t7fSykY5JdXYAhbVba6jAkmk30IgYuvm:UbA307fSqJd3r730/+
TLSH
T190454A017E44CA12F0191633C2FF4A044BB4AC51AAA6E72B7EF9376E55123937D1DACB
MD5 SHA1 SHA512 SSDEEP TLSH

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

a8eb68ed1d443959b4e0b4d66886ce01192d989b0c9016a32d9ab705cb4e8269.exe

kernel32

gdiplus

generic