8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6

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General

Target
8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6
Size 6.6MB
Sample261015-stlrjag16w
SHA256 8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6
MD5 37880b89601913005ee7716a5f38d85c
SHA1 03dd2c1561055e072c53dfa448de8ed59e9e9095
SHA512 3de4ca69ef9d81fc8d88447579b1327a6710dab85fe4bf36848a2d802cffd92959b9956b2ed025d95a202ed33ed2fe027a8cb2f5669839d2928b632f5c7885de
SSDEEP 196608:01J1aqNY52B3EjP6Li9WQVjYr7GBIvyXX:0/k+22B3EjP6LGWQVjeG
TLSH
T15466C053B311207CC84B6872643D6F7B8C291D63972286DF89E83CA25B749C26A3D75F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6

File Explorer

8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6

.exe 6.6MB

8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6

IMPHASH 107d4396f9b8d87e2600bfdd09489886
SHA256 8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6
MD5 37880b89601913005ee7716a5f38d85c
SHA1 03dd2c1561055e072c53dfa448de8ed59e9e9095
SHA512 3de4ca69ef9d81fc8d88447579b1327a6710dab85fe4bf36848a2d802cffd92959b9956b2ed025d95a202ed33ed2fe027a8cb2f5669839d2928b632f5c7885de
SSDEEP 196608:01J1aqNY52B3EjP6Li9WQVjYr7GBIvyXX:0/k+22B3EjP6LGWQVjeG
TLSH
T15466C053B311207CC84B6872643D6F7B8C291D63972286DF89E83CA25B749C26A3D75F
MD5 SHA1 SHA512 SSDEEP TLSH

windows:10 windows x86 arch:x86

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

3151888

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

browser_assistant.exe.pdb

advapi32

AccessCheck AdjustTokenPrivileges AllocateAndInitializeSid BuildExplicitAccessWithNameW BuildSecurityDescriptorW BuildTrusteeWithSidW CheckTokenMembership ConvertSidToStringSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW CreateProcessAsUserW CreateProcessWithTokenW CryptAcquireContextW CryptCreateHash CryptDestroyHash CryptGetHashParam CryptHashData CryptReleaseContext DuplicateToken DuplicateTokenEx EqualSid FreeSid GetExplicitEntriesFromAclW GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorControl GetSecurityDescriptorDacl GetSecurityDescriptorGroup GetSecurityDescriptorOwner GetSecurityDescriptorSacl GetSidSubAuthority GetSidSubAuthorityCount GetTokenInformation GetUserNameW ImpersonateNamedPipeClient InitializeAcl InitializeSecurityDescriptor IsValidAcl IsValidSecurityDescriptor IsValidSid LookupPrivilegeValueW OpenProcessToken RegCloseKey RegCreateKeyExW RegDeleteKeyExW RegDeleteValueA RegDeleteValueW RegEnumKeyExW RegEnumValueW RegGetKeySecurity RegNotifyChangeKeyValue RegOpenKeyExW RegQueryInfoKeyW RegQueryValueExA RegQueryValueExW RegSetValueExA RegSetValueExW RevertToSelf SetEntriesInAclW SetNamedSecurityInfoW SetSecurityDescriptorDacl SetSecurityInfo

dbghelp

MiniDumpWriteDump SymCleanup SymFromAddr SymGetLineFromAddr64 SymGetModuleInfo64 SymGetSearchPathW SymInitialize SymSetOptions SymSetSearchPathW

gdi32

CreateRectRgn GetStockObject

oleaut32

SysAllocString SysFreeString VariantClear VariantCopy

shell32

CommandLineToArgvW ord680 SHChangeNotify SHGetFolderPathW SHGetKnownFolderPath SHQueryUserNotificationState ShellExecuteExW ShellExecuteW Shell_NotifyIconW

shlwapi

PathMatchSpecW SHDeleteKeyW

user32

AllowSetForegroundWindow CharLowerW CharUpperW CreatePopupMenu CreateWindowExW DefWindowProcW DestroyMenu DestroyWindow DispatchMessageW EnableWindow FindWindowExW FindWindowW GetActiveWindow GetClientRect GetCursorPos GetDesktopWindow GetForegroundWindow GetMessageW GetQueueStatus GetShellWindow GetWindowLongW GetWindowThreadProcessId InsertMenuItemW KillTimer LoadIconW MessageBoxW MsgWaitForMultipleObjectsEx PeekMessageW PostMessageW PostQuitMessage RegisterClassExW RegisterClassW SendInput SendNotifyMessageW SetForegroundWindow SetTimer SetWindowLongW SetWindowPos SetWindowRgn SystemParametersInfoW TrackPopupMenuEx TranslateMessage UnregisterClassW WaitForInputIdle

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

wininet

HttpOpenRequestW HttpQueryInfoW HttpSendRequestW InternetCloseHandle InternetConnectW InternetOpenW

ws2_32

WSACleanup WSACloseEvent WSACreateEvent WSAEnumNetworkEvents WSAEventSelect WSAGetLastError WSAIoctl WSAResetEvent WSASetLastError WSAStartup WSAWaitForMultipleEvents __WSAFDIsSet accept bind closesocket connect freeaddrinfo getaddrinfo getsockname getsockopt htonl htons ioctlsocket listen ntohs recv select send setsockopt socket

kernel32

AcquireSRWLockExclusive AcquireSRWLockShared AddVectoredExceptionHandler AssignProcessToJobObject CancelIo CloseHandle CompareStringOrdinal CompareStringW ConnectNamedPipe CopyFileW CreateDirectoryW CreateEventW CreateFileA CreateFileMappingW CreateFileW CreateIoCompletionPort CreateMutexW CreateNamedPipeW CreatePipe CreateProcessW CreateSemaphoreW CreateThread DecodePointer DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DeviceIoControl DisconnectNamedPipe DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExpandEnvironmentStringsW FileTimeToSystemTime FindClose FindFirstFileExW FindFirstFileW FindNextFileW FindResourceExW FindResourceW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FlushViewOfFile FormatMessageA FormatMessageW FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDiskFreeSpaceExW GetDriveTypeW GetDynamicTimeZoneInformation GetEnvironmentStringsW GetEnvironmentVariableA GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesExW GetFileAttributesW GetFileInformationByHandle GetFileInformationByHandleEx GetFileSize GetFileSizeEx GetFileTime GetFileType GetFullPathNameW GetGeoInfoW GetHandleInformation GetLastError GetLocalTime GetLocaleInfoEx GetLocaleInfoW GetLogicalDrives GetLogicalProcessorInformation GetLogicalProcessorInformationEx GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExA GetModuleHandleExW GetModuleHandleW GetNamedPipeClientProcessId GetNamedPipeServerProcessId GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHandleCount GetProcessHeap GetProcessId GetProcessMitigationPolicy GetProcessTimes GetProductInfo GetQueuedCompletionStatus GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDefaultLCID GetSystemDirectoryW GetSystemInfo GetSystemPowerStatus GetSystemTime GetSystemTimeAsFileTime GetSystemTimePreciseAsFileTime GetTempPathW GetThreadContext GetThreadId GetThreadLocale GetThreadPreferredUILanguages GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetUserGeoID GetVersionExW GetWindowsDirectoryW GlobalMemoryStatusEx HeapAlloc HeapDestroy HeapFree HeapReAlloc HeapSize InitOnceExecuteOnce InitializeConditionVariable InitializeCriticalSection InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead InitializeSRWLock IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process K32GetModuleInformation K32GetPerformanceInfo K32GetProcessMemoryInfo K32QueryWorkingSetEx LCMapStringW LeaveCriticalSection LoadLibraryA LoadLibraryExA LoadLibraryExW LoadLibraryW LoadResource LocalAlloc LocalFree LockFileEx LockResource MapViewOfFile MoveFileExW MoveFileW MultiByteToWideChar OpenEventW OpenMutexW OpenProcess OutputDebugStringA OutputDebugStringW PeekNamedPipe PostQueuedCompletionStatus QueryFullProcessImageNameW QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReadProcessMemory RegisterWaitForSingleObject ReleaseMutex ReleaseSRWLockExclusive ReleaseSRWLockShared ReleaseSemaphore RemoveDirectoryW RemoveVectoredExceptionHandler ReplaceFileW ResetEvent ResumeThread RtlCaptureStackBackTrace RtlUnwind SetConsoleCtrlHandler SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFileInformationByHandle SetFilePointerEx SetFileTime SetHandleInformation SetInformationJobObject SetLastError SetNamedPipeHandleState SetProcessShutdownParameters SetStdHandle SetThreadInformation SetThreadPriority SetUnhandledExceptionFilter SizeofResource Sleep SleepConditionVariableSRW SleepEx SuspendThread SwitchToThread SystemTimeToFileTime SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TransactNamedPipe TryAcquireSRWLockExclusive TzSpecificLocalTimeToSystemTime UnhandledExceptionFilter UnlockFileEx UnmapViewOfFile UnregisterWaitEx UpdateProcThreadAttribute VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualFree VirtualProtect VirtualQuery VirtualQueryEx WaitForMultipleObjects WaitForSingleObject WaitForSingleObjectEx WaitNamedPipeW WakeAllConditionVariable WakeConditionVariable WerRegisterRuntimeExceptionModule WideCharToMultiByte WriteConsoleW WriteFile

ole32

CoAllowSetForegroundWindow CoCreateInstance CoInitializeEx CoInitializeSecurity CoRegisterInitializeSpy CoRevokeInitializeSpy CoSetProxyBlanket CoTaskMemFree CoUninitialize IIDFromString OleCreate OleInitialize OleSetContainedObject OleUninitialize StringFromGUID2

bcrypt

BCryptCloseAlgorithmProvider BCryptCreateHash BCryptDestroyHash BCryptFinishHash BCryptGenRandom BCryptHashData BCryptOpenAlgorithmProvider

crypt32

CertAddCertificateContextToStore CertCloseStore CertCreateCertificateChainEngine CertEnumCertificatesInStore CertFindCertificateInStore CertFindExtension CertFreeCRLContext CertFreeCTLContext CertFreeCertificateChain CertFreeCertificateChainEngine CertFreeCertificateContext CertGetCertificateChain CertGetNameStringW CertOpenStore CryptBinaryToStringW CryptDecodeObjectEx CryptQueryObject CryptStringToBinaryW PFXImportCertStore

secur32

InitSecurityInterfaceW

ntdll

NtDeleteKey NtQueryObject RtlGetLastNtStatus

winmm

timeBeginPeriod timeEndPeriod timeGetTime

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

api-ms-win-core-synch-l1-2-0

WaitOnAddress WakeByAddressAll WakeByAddressSingle

api-ms-win-core-winrt-l1-1-0

RoInitialize RoUninitialize

winhttp

WinHttpAddRequestHeaders WinHttpCloseHandle WinHttpConnect WinHttpCrackUrl WinHttpOpen WinHttpOpenRequest WinHttpQueryHeaders WinHttpReadData WinHttpReceiveResponse WinHttpSendRequest WinHttpSetTimeouts WinHttpWriteData

Name

.text

Size

4.3MB

Virtual Size

4.3MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

701KB

Virtual Size

701KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

21KB

Virtual Size

184KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.fptable

Size

512B

Virtual Size

128B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rodata

Size

512B

Virtual Size

88B

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

453B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

CPADinfo

Size

512B

Virtual Size

40B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

malloc_h

Size

1024B

Virtual Size

774B

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

183KB

Virtual Size

182KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

1.4MB

Virtual Size

1.4MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

8f8d1bcaa8fbf65148900da63e9150d3a87d8b48bc8dcec760f12d28656fefc6

advapi32

dbghelp

gdi32

oleaut32

shell32

shlwapi

user32

version

wininet

ws2_32

kernel32

ole32

bcrypt

crypt32

secur32

ntdll

winmm

userenv

api-ms-win-core-synch-l1-2-0

api-ms-win-core-winrt-l1-1-0

winhttp

generic