optimal[.]exe | Triage™

General

Target
optimal.exe
Size 160KB
Sample260930-san3jstyfw
SHA256 903a309eedb926e4bbd1227748096814c612dbb7dfcee379f7360a8c9ed21542
MD5 d05e315c69569716d01bf9acf37da245
SHA1 34ff94a0c8d86befa7987e2a67445ceff6af9721
SHA512 1533c8be3781b4ef51cf2408d7966812d3a016d1db372a9208d4f6585cad92e3730ebc6f11e2384e50a37d67948dbd143568cf1a915963f4b4436daadeaf4a7c
SSDEEP 3072:BvrLo++smOJc160xmplPwjoxl2CUysEQxnAEAxbvqnarWQbv:eB+Sxmploje2C2xAE69D
TLSH
T107F35C5B72A934F9E137823884A21A42F772B43507616BEF0360477A1F277E19D7BB21
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
optimal.exe

File Explorer

optimal.exe

.exe 160KB

optimal.exe

IMPHASH 7de1855770fd82990edb8ef5c6146b38
SHA256 903a309eedb926e4bbd1227748096814c612dbb7dfcee379f7360a8c9ed21542
MD5 d05e315c69569716d01bf9acf37da245
SHA1 34ff94a0c8d86befa7987e2a67445ceff6af9721
SHA512 1533c8be3781b4ef51cf2408d7966812d3a016d1db372a9208d4f6585cad92e3730ebc6f11e2384e50a37d67948dbd143568cf1a915963f4b4436daadeaf4a7c
SSDEEP 3072:BvrLo++smOJc160xmplPwjoxl2CUysEQxnAEAxbvqnarWQbv:eB+Sxmploje2C2xAE69D
TLSH
T107F35C5B72A934F9E137823884A21A42F772B43507616BEF0360477A1F277E19D7BB21
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

6

Entry point

32704

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

C:\Users\danar\source\repos\optimal\x64\Release\optimal.pdb

kernel32

CreateFileW GetModuleHandleA MultiByteToWideChar Sleep WaitForSingleObject CloseHandle GetProcAddress GetFileSize WriteConsoleW VirtualFree GetModuleFileNameA DeleteFileW ReadFile HeapReAlloc HeapSize GetConsoleMode GetCurrentThreadId GetLastError WaitForSingleObjectEx GetExitCodeThread ReleaseSRWLockExclusive AcquireSRWLockExclusive WakeAllConditionVariable QueryPerformanceCounter SetUnhandledExceptionFilter GetStartupInfoW GetModuleHandleW GetCurrentProcessId GetSystemTimeAsFileTime InitializeSListHead RtlLookupFunctionEntry RtlUnwindEx RtlPcToFileHeader RaiseException SetLastError FlsAlloc FlsGetValue FlsSetValue FlsFree EncodePointer EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection GetCurrentProcess ExitProcess TerminateProcess FreeLibrary GetModuleHandleExW CreateThread ExitThread FreeLibraryAndExitThread IsProcessorFeaturePresent GetModuleFileNameW GetStdHandle WriteFile RtlCaptureContext RtlVirtualUnwind IsDebuggerPresent UnhandledExceptionFilter HeapAlloc HeapFree VirtualProtect LoadLibraryExW LCMapStringW GetFileType SetFilePointerEx FindClose FindFirstFileExW FindNextFileW IsValidCodePage GetACP GetOEMCP GetCPInfo GetCommandLineA GetCommandLineW WideCharToMultiByte GetEnvironmentStringsW FreeEnvironmentStringsW GetProcessHeap SetStdHandle GetStringTypeW FlushFileBuffers GetConsoleOutputCP

advapi32

FreeSid CheckTokenMembership AllocateAndInitializeSid

shell32

ShellExecuteExA

urlmon

URLDownloadToCacheFileW

Name

.text

Size

95KB

Virtual Size

94KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

50KB

Virtual Size

50KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

6KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

6KB

Virtual Size

6KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

1024B

Virtual Size

688B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

optimal.exe

kernel32

advapi32

shell32

urlmon

generic