nimplant | AES[.]exe

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General

Target
AES.exe
Size 1.0MB
Sample261113-pec93avt8m
SHA256 abc27cc99ef167b4d3aa3648d696bd7068e9ab9d147934cd422f9ad8b5d49169
MD5 18a33d82d2a081f51cddb34904430ba0
SHA1 c1138946e02d457400d025b8a6f18d2e6db68566
SHA512 fad2682da333434b68dd5de77a33c81a5c7432401e48ae2adb33fee9ba8d7d8e2dd837f6cd35da804f6f762865067c53c2382b82e4bfa3d517cd47bf87e3b6f9
SSDEEP 24576:KaGeudUS7tdzv5k+zhHSnMA152c6D5QZlm6DcgwcOvaJazTc7cQQa2FZHjsIkQDo:KdeudUS7tdzy+tHSnMa52c6DmZlm6Dfs
TLSH
T170353C37E26350ECC46BC1B0431BA1B27E31BC5E5630B92E0694B7B02E76F906A7DB55
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor nimplant

Malware Config

Signatures

Family: NimPlant
NimPlant is an C2 framework written in Nim.
backdoor nimplant

Detects NimPlant 1 IoCs

resource	yara_rule
sample	family_nimplant

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
AES.exe

File Explorer

AES.exe

.exe 1.0MB

AES.exe

IMPHASH d4175be4b3eff09e3babcf0636a8bedb
SHA256 abc27cc99ef167b4d3aa3648d696bd7068e9ab9d147934cd422f9ad8b5d49169
MD5 18a33d82d2a081f51cddb34904430ba0
SHA1 c1138946e02d457400d025b8a6f18d2e6db68566
SHA512 fad2682da333434b68dd5de77a33c81a5c7432401e48ae2adb33fee9ba8d7d8e2dd837f6cd35da804f6f762865067c53c2382b82e4bfa3d517cd47bf87e3b6f9
SSDEEP 24576:KaGeudUS7tdzv5k+zhHSnMA152c6D5QZlm6DcgwcOvaJazTc7cQQa2FZHjsIkQDo:KdeudUS7tdzy+tHSnMa52c6DmZlm6Dfs
TLSH
T170353C37E26350ECC46BC1B0431BA1B27E31BC5E5630B92E0694B7B02E76F906A7DB55
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x64 arch:x64

Detects NimPlant
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4342

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DEBUG_STRIPPED

PDB paths

kernel32

AddVectoredExceptionHandler CloseHandle CreateEventA CreateSemaphoreA DeleteCriticalSection DuplicateHandle EnterCriticalSection FreeLibrary GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetHandleInformation GetLastError GetModuleHandleA GetProcAddress GetProcessAffinityMask GetStartupInfoA GetSystemTimeAsFileTime GetThreadContext GetThreadPriority GetTickCount InitializeCriticalSection IsDBCSLeadByteEx IsDebuggerPresent LeaveCriticalSection LoadLibraryA MultiByteToWideChar OpenProcess OutputDebugStringA QueryPerformanceCounter QueryPerformanceFrequency RaiseException ReleaseSemaphore RemoveVectoredExceptionHandler ResetEvent ResumeThread SetEvent SetLastError SetProcessAffinityMask SetThreadContext SetThreadPriority SetUnhandledExceptionFilter Sleep SuspendThread TlsAlloc TlsGetValue TlsSetValue TryEnterCriticalSection VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForMultipleObjects WaitForSingleObject WideCharToMultiByte

msvcrt

__C_specific_handler ___lc_codepage_func ___mb_cur_max_func __getmainargs __initenv __iob_func __lconv_init __set_app_type __setusermatherr _acmdln _amsg_exit _beginthreadex _cexit _commode _endthreadex _errno _filelengthi64 _fileno _fmode _initterm _localtime64 _lock _onexit _setjmp _setmode _strdup _ultoa _unlock _vsnprintf _vsnwprintf _wfopen abort calloc clearerr exit fclose ferror fflush fgetc fgetpos fgetwc fprintf fputc fread free fsetpos fwrite getc localeconv longjmp malloc memchr memcmp memcpy memmove memset printf realloc setvbuf signal strerror strlen strncmp ungetc vfprintf wcschr wcslen

user32

MessageBoxA

Name

.text

Size

811KB

Virtual Size

811KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

173KB

Virtual Size

173KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.eh_fram

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

20KB

Virtual Size

19KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.xdata

Size

22KB

Virtual Size

22KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

7KB

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

4KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.CRT

Size

512B

Virtual Size

112B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.reloc

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

AES.exe

kernel32

msvcrt

user32

generic