nbexec[.]exe | Triage

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General

Target

nbexec.exe
Size

148KB
MD5

01499b8cd0ccdeee001f7d02b3bd6389
SHA1

6a301776ff498c3b00aecc3f0722386ec7227253
SHA256

6fb858c5e8dfdb969fad1ec848e576288cf9eda9b1158b14fc9988adfee14937
SHA512

e9b40b57902aa80ef6c888b62b4c3bebe86d1b813fa529ded02f8c910175e6f75c83187c9ef49b61f39b3e62b9b80a2e5adca7e642ae0e0387de7f43f82c6247
SSDEEP

3072:Ix/EXRd7KA4KULtT0yAkOtFDEOC51WhL1pZrlEPNn7Yo:IcRd7KA4KULtT0yAkOt5EOC51gpJlEPJ

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
nbexec.exe

Files

nbexec.exe
.exe windows:4 windows x86

4f0c8f7f95ff59f83c5b4fb19f6915a8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED

Imports

advapi32

OpenProcessToken
RegCloseKey
RegOpenKeyExA
RegQueryValueExA
SetTokenInformation

kernel32

AddAtomA
AllocConsole
CloseHandle
CreateDirectoryA
CreateSemaphoreA
DeleteCriticalSection
DeleteFileA
EnterCriticalSection
ExitProcess
FindAtomA
FindClose
FindFirstFileA
FormatMessageA
FreeLibrary
GetAtomNameA
GetCurrentProcess
GetCurrentProcessId
GetLastError
GetModuleFileNameA
GetModuleHandleA
GetProcAddress
GetVersionExA
InitializeCriticalSection
InterlockedDecrement
InterlockedExchange
InterlockedIncrement
IsDBCSLeadByteEx
LeaveCriticalSection
LoadLibraryA
LocalFree
MultiByteToWideChar
ReleaseSemaphore
SetLastError
SetUnhandledExceptionFilter
Sleep
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
VirtualProtect
VirtualQuery
WaitForSingleObject
WideCharToMultiByte

msvcrt

__getmainargs
__mb_cur_max
__p__environ
__p__fmode
__set_app_type
_assert
_cexit
_errno
_fullpath
_iob
_onexit
_setmode
_snprintf
abort
atexit
atoi
calloc
fclose
fopen
fprintf
fputc
free
fwrite
getenv
localeconv
malloc
memchr
memcpy
memmove
memset
setlocale
signal
strchr
strcmp
strlen
strncat
strncpy
strtoul
vfprintf
wcslen

user32

MessageBoxA

Sections

.text
Size: 69KB - Virtual size: 68KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 72KB - Virtual size: 72KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 18KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 32B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

4f0c8f7f95ff59f83c5b4fb19f6915a8

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

msvcrt

user32

Sections

.text Size: 69KB - Virtual size: 68KB

.data Size: 72KB - Virtual size: 72KB

.bss Size: - Virtual size: 18KB

.idata Size: 3KB - Virtual size: 2KB

.CRT Size: 512B - Virtual size: 24B

.tls Size: 512B - Virtual size: 32B

.rsrc Size: 2KB - Virtual size: 1KB

.text
Size: 69KB - Virtual size: 68KB

.data
Size: 72KB - Virtual size: 72KB

.bss
Size: - Virtual size: 18KB

.idata
Size: 3KB - Virtual size: 2KB

.CRT
Size: 512B - Virtual size: 24B

.tls
Size: 512B - Virtual size: 32B

.rsrc
Size: 2KB - Virtual size: 1KB