dcrat | 1bd88bbb0c82349303aa60c470c8b51e[.]exe

General

Target
1bd88bbb0c82349303aa60c470c8b51e.exe
Size 3.3MB
Sample260825-y4mdpsej8s
SHA256 fd669e1388907d25b8039b5ae22804a6b77a96d139c8f8bbff50c15c9968bfa2
MD5 1bd88bbb0c82349303aa60c470c8b51e
SHA1 55888979b9436e79d41aeb0b763de01ed99b85db
SHA512 b78c333246b63419bec60237782b7a32a0b1dfd1fa5ee8f27d83f11dceb14685cef39309e2496e4408e488b30df73f02be8bdc2a21c9f45a48b7bd1ef3584807
SSDEEP 98304:Ubrsyw9Am+MZm8Ib2v8kViYY/jq9uvScoCJVQ2:U/sd9F+qVIyv8kV/bujDQ2
TLSH
T1CFF5EF027E44CA12F0191233C2FF494447B9AC112AA6E72B7DB9336D55223D3BE5DADB
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
1bd88bbb0c82349303aa60c470c8b51e.exe

File Explorer

1bd88bbb0c82349303aa60c470c8b51e.exe

.exe 3.3MB

1bd88bbb0c82349303aa60c470c8b51e.exe

IMPHASH fcf1390e9ce472c7270447fc5c61a0c1
SHA256 fd669e1388907d25b8039b5ae22804a6b77a96d139c8f8bbff50c15c9968bfa2
MD5 1bd88bbb0c82349303aa60c470c8b51e
SHA1 55888979b9436e79d41aeb0b763de01ed99b85db
SHA512 b78c333246b63419bec60237782b7a32a0b1dfd1fa5ee8f27d83f11dceb14685cef39309e2496e4408e488b30df73f02be8bdc2a21c9f45a48b7bd1ef3584807
SSDEEP 98304:Ubrsyw9Am+MZm8Ib2v8kViYY/jq9uvScoCJVQ2:U/sd9F+qVIyv8kV/bujDQ2
TLSH
T1CFF5EF027E44CA12F0191233C2FF494447B9AC112AA6E72B7DB9336D55223D3BE5DADB
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

1bd88bbb0c82349303aa60c470c8b51e.exe

kernel32

gdiplus

generic