AtBroker[.]exe

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General

Target

AtBroker.exe
Size

67KB
MD5

38649c6c612ae8d8f1530a7430388489
SHA1

1226eba069d0c8776f9efac8c9dd987e64f1e569
SHA256

639d900501066e6f4ca131bf45b0051f4e7152c371a16405afc607775276fdbc
SHA512

958c40daeceae0e809b4b70ac75c5d949d6e33110a936b41ab307a1ab9cf2f4954d48bdfafe06292b44a5e174f9e8a6e4f0f18431edd20a29f10a3103189a61f
SSDEEP

1536:zM89pIoZOzDT3tAc3KT8HCz25SSL/TIiB:t9Ezb6AfSSL/TIiB

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
AtBroker.exe

Files

AtBroker.exe
.exe windows:10 windows x86

8345a2f978f5669c81fff2049dc536da

Headers

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

Imports

advapi32

RegQueryValueExW
OpenServiceW
QueryServiceConfigW
EventUnregister
RegOpenKeyExW
CheckTokenMembership
UnregisterTraceGuids
RegisterTraceGuidsW
FreeSid
GetTraceEnableLevel
GetTraceEnableFlags
GetTraceLoggerHandle
EventSetInformation
TraceMessage
AllocateAndInitializeSid
OpenSCManagerW
EventRegister
CloseServiceHandle
EventWriteTransfer
RegCloseKey
GetTokenInformation
ConvertSidToStringSidW
OpenProcessToken

kernel32

LocalAlloc
GetCurrentThreadId
GetVersionExW
MultiByteToWideChar
Sleep
LockResource
CloseHandle
RaiseException
FindResourceExW
LoadResource
LocalFree
lstrcmpiW
OpenMutexW
GetCurrentProcessId
DelayLoadFailureHook
ResolveDelayLoadedAPI
SizeofResource
SetProcessShutdownParameters
ExpandEnvironmentStringsW
OOBEComplete
IsProcessInJob
OpenJobObjectW
IsDebuggerPresent
CreateMutexExW
OpenSemaphoreW
WaitForSingleObjectEx
InitOnceComplete
OutputDebugStringW
FormatMessageW
WaitForSingleObject
ReleaseSemaphore
CreateSemaphoreExW
InitOnceBeginInitialize
RegEnumValueW
RegDeleteTreeW
K32GetModuleBaseNameW
K32EnumProcessModules
ProcessIdToSessionId
K32EnumProcesses
RegLoadMUIStringW
DeleteFileW
GetFileAttributesW
DeleteProcThreadAttributeList
QueryPerformanceCounter
GetModuleHandleW
CreateProcessW
UpdateProcThreadAttribute
InitializeProcThreadAttributeList
OpenProcess
SetLastError
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
GetProcAddress
DebugBreak
GetModuleFileNameA
GetModuleHandleExW
ReleaseMutex
CompareStringOrdinal
RegGetValueW
RegCreateKeyExW
RegSetValueExW
RegEnumKeyExW
UnhandledExceptionFilter
GetTickCount
HeapSize
HeapReAlloc
HeapFree
HeapAlloc
GetProcessHeap
HeapDestroy
InitializeCriticalSection
DeleteCriticalSection
EnterCriticalSection
LeaveCriticalSection
GetLastError
GetSystemTimeAsFileTime

user32

SystemParametersInfoW
GetThreadDesktop
SendNotifyMessageW
SetDesktopColorTransform
GetWindowThreadProcessId
GetShellWindow
GetKeyState
SendInput
UnregisterClassA
GetUserObjectInformationW

msvcrt

_wcslwr_s
_controlfp
?terminate@@YAXXZ
_except_handler4_common
_onexit
_ltow_s
_unlock
_lock
_initterm
__setusermatherr
__p__fmode
_cexit
_exit
exit
__set_app_type
__wgetmainargs
_amsg_exit
__p__commode
_XcptFilter
??_V@YAXPAX@Z
memmove_s
malloc
free
wcscpy_s
_wcsicmp
memcpy_s
wcschr
_callnewh
??1type_info@@UAE@XZ
__dllonexit
__CxxFrameHandler3
_vsnwprintf
_wtoi
wcsrchr
wcsspn
wcscspn
memset

ntdll

WinSqmIsOptedIn
WinSqmAddToStream
NtUpdateWnfStateData
NtQueryWnfStateData

shell32

ShellExecuteW

shlwapi

PathFileExistsW
ord460

uxtheme

ord65

Sections

.text
Size: 54KB - Virtual size: 53KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8345a2f978f5669c81fff2049dc536da

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

user32

msvcrt

ntdll

shell32

shlwapi

uxtheme

Sections

.text Size: 54KB - Virtual size: 53KB

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

.idata Size: 4KB - Virtual size: 4KB

.didat Size: 512B - Virtual size: 8B

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

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

.text
Size: 54KB - Virtual size: 53KB

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

.idata
Size: 4KB - Virtual size: 4KB

.didat
Size: 512B - Virtual size: 8B

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

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