dcrat | SolaraB[.]exe

General

Target
SolaraB.exe
Size 1.4MB
Sample240706-tnbj2sthpp
SHA256 3a45f3eeb50019496878de2b1042b27fdf54edfa6082ebe290d9c47a26347725
MD5 233417cb2548f3bbf0abbff8c8d08e18
SHA1 292b8b8f18826c152ca73006d194c401872cd8bf
SHA512 389b7aa535a1d4f05ed5f12a3447d6c418e223dd10ea566d8b7a2c70d88783cf60986d59741693cdb2e0af0f398a9a82880165d4efae35673e74eeb83ba8a36e
SSDEEP 24576:U2G/nvxW3Ww0t718Zausjp9ljrvilDg5I+HzYOdmXOcVRMF+aKfR:UbA30718Z9Mlj5NCOuR0+aKZ
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
SolaraB.exe

File Explorer

SolaraB.exe

.exe 1.4MB

SolaraB.exe

IMPHASH fcf1390e9ce472c7270447fc5c61a0c1
SHA256 3a45f3eeb50019496878de2b1042b27fdf54edfa6082ebe290d9c47a26347725
MD5 233417cb2548f3bbf0abbff8c8d08e18
SHA1 292b8b8f18826c152ca73006d194c401872cd8bf
SHA512 389b7aa535a1d4f05ed5f12a3447d6c418e223dd10ea566d8b7a2c70d88783cf60986d59741693cdb2e0af0f398a9a82880165d4efae35673e74eeb83ba8a36e
SSDEEP 24576:U2G/nvxW3Ww0t718Zausjp9ljrvilDg5I+HzYOdmXOcVRMF+aKfR:UbA30718Z9Mlj5NCOuR0+aKZ
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

Resubmissions

Sharing

General

Malware Config

Signatures

File Explorer

SolaraB.exe

kernel32

gdiplus

generic