AtBroker[.]exe

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General

Target

AtBroker.exe
Size

90KB
MD5

30076e434a015bdf4c136e09351882cc
SHA1

584c958a35e23083a0861421357405afd26d9a0c
SHA256

ae7b1e298a6e38f0a3428151bfc5565ede50a8d98dafaa147b13cf89c61f2ddd
SHA512

675e310c2455acf9220735f34fa527afe87dac691e89cc0edc3c4659147e9fd223f96b7a3beea532047aa0ebc58880a7010343019a50aa73ce69a038e3592024
SSDEEP

1536:To4xehkWhYULcid2bpS8r0sMCl9Mx07zLrwkkqz3q/Troh7YTVZPyOh+id+Uk9:M8vQc79vr0wPLrwkkCq/nEYTVZPy9id2

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
AtBroker.exe

Files

AtBroker.exe
.exe windows x64

468490d98938aae93ecc62c54a775dc2

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE

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
GetModuleHandleW
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
TerminateProcess
GetCurrentProcess
DeleteProcThreadAttributeList
CreateProcessW
UpdateProcThreadAttribute
InitializeProcThreadAttributeList
OpenProcess
SetLastError
GetProcAddress
DebugBreak
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetModuleFileNameA
GetModuleHandleExW
ReleaseMutex
CompareStringOrdinal
RegGetValueW
RegCreateKeyExW
RegSetValueExW
RegEnumKeyExW
GetTickCount
GetLastError
GetSystemTimeAsFileTime
GetCurrentProcessId
HeapSize
HeapReAlloc
HeapFree
HeapAlloc
GetProcessHeap
HeapDestroy
InitializeCriticalSection
DeleteCriticalSection
EnterCriticalSection
LeaveCriticalSection
QueryPerformanceCounter

user32

SystemParametersInfoW
GetThreadDesktop
SendNotifyMessageW
SetDesktopColorTransform
GetWindowThreadProcessId
GetShellWindow
GetKeyState
SendInput
UnregisterClassA
GetUserObjectInformationW

msvcrt

_ltow_s
_wcslwr_s
wcscspn
wcsspn
?terminate@@YAXXZ
_onexit
wcschr
_unlock
_lock
_commode
_fmode
_initterm
__setusermatherr
_cexit
_exit
exit
__set_app_type
__wgetmainargs
_amsg_exit
_XcptFilter
??_V@YAXPEAX@Z
memmove_s
__C_specific_handler
malloc
free
wcscpy_s
_wcsicmp
memcpy_s
_callnewh
??1type_info@@UEAA@XZ
memset
__dllonexit
__CxxFrameHandler3
_vsnwprintf
_wtoi
wcsrchr
wcscmp

ntdll

RtlVirtualUnwind
NtQueryWnfStateData
RtlCaptureContext
WinSqmIsOptedIn
WinSqmAddToStream
NtUpdateWnfStateData
RtlLookupFunctionEntry

shell32

ShellExecuteW

shlwapi

PathFileExistsW
ord460

uxtheme

ord65

Sections

.text
Size: 58KB - Virtual size: 58KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 23KB - Virtual size: 22KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 16B

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: 512B - Virtual size: 172B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

468490d98938aae93ecc62c54a775dc2

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

user32

msvcrt

ntdll

shell32

shlwapi

uxtheme

Sections

.text Size: 58KB - Virtual size: 58KB

.rdata Size: 23KB - Virtual size: 22KB

.data Size: 3KB - Virtual size: 4KB

.pdata Size: 2KB - Virtual size: 2KB

.didat Size: 512B - Virtual size: 16B

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

.reloc Size: 512B - Virtual size: 172B

.text
Size: 58KB - Virtual size: 58KB

.rdata
Size: 23KB - Virtual size: 22KB

.data
Size: 3KB - Virtual size: 4KB

.pdata
Size: 2KB - Virtual size: 2KB

.didat
Size: 512B - Virtual size: 16B

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

.reloc
Size: 512B - Virtual size: 172B