fileupgrade[.]exe | Triage™

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General

Target
fileupgrade.exe
Size 11.5MB
Sample261104-27k7lad16w
SHA256 99b5c1ba63df912cc67b9fa13901b155d689d227ff47296278009f014c33bd50
MD5 c6896f52247ee709196704558b842de2
SHA1 a23b7d703fee1b4cedc8af8263fa1347f3c980a7
SHA512 f5fafbfeb62b562950f9cf60f4b9e176effb1c55c23c4b9361c616b08f94625edba6871f29f25b61bad042ea43cb30c62df766c21427f4220ec6367f4a264cf3
SSDEEP 196608:Y2r1Qsf9i7hwJ3O61r5pkhbAJTf4LCwBjBytYSfdwJPevc2Ag39V6lOTkrtW8:YJsfmwF7PQA6OwNBytLdw9ek+V6gTkr
TLSH
T1D6C6338126A361B8F272C1B5A8870F29E73872C54358ACE727E3E6701DA95F15EF3417
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
fileupgrade.exe

File Explorer

fileupgrade.exe

.exe 11.5MB

fileupgrade.exe

IMPHASH 8059273d4e02b6a119cc1997b32d7800
SHA256 99b5c1ba63df912cc67b9fa13901b155d689d227ff47296278009f014c33bd50
MD5 c6896f52247ee709196704558b842de2
SHA1 a23b7d703fee1b4cedc8af8263fa1347f3c980a7
SHA512 f5fafbfeb62b562950f9cf60f4b9e176effb1c55c23c4b9361c616b08f94625edba6871f29f25b61bad042ea43cb30c62df766c21427f4220ec6367f4a264cf3
SSDEEP 196608:Y2r1Qsf9i7hwJ3O61r5pkhbAJTf4LCwBjBytYSfdwJPevc2Ag39V6lOTkrtW8:YJsfmwF7PQA6OwNBytLdw9ek+V6gTkr
TLSH
T1D6C6338126A361B8F272C1B5A8870F29E73872C54358ACE727E3E6701DA95F15EF3417
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

108720

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

api-ms-win-crt-convert-l1-1-0

mbstowcs wcstol

api-ms-win-crt-filesystem-l1-1-0

_wrename

api-ms-win-crt-heap-l1-1-0

_set_new_mode calloc free malloc

api-ms-win-crt-private-l1-1-0

__C_specific_handler wcschr

api-ms-win-crt-runtime-l1-1-0

__p___argc __p___wargv __p__wcmdln _cexit _configure_wide_argv _crt_atexit _errno _exit _initialize_wide_environment _initterm _initterm_e _set_app_type _set_invalid_parameter_handler abort exit signal

api-ms-win-crt-stdio-l1-1-0

__acrt_iob_func __p__commode __p__fmode __stdio_common_vfprintf __stdio_common_vsprintf __stdio_common_vswprintf fwrite puts

api-ms-win-crt-string-l1-1-0

_wcsdup _wcsicmp iswctype strcat strcpy strncpy wcscmp wcslen wcsncmp

kernel32

AddDllDirectory CloseHandle CopyFileW CreateDirectoryW CreateFileMappingW CreateFileW CreateProcessW DeleteCriticalSection DeleteFileW EnterCriticalSection FormatMessageA GetCommandLineW GetCurrentProcessId GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesW GetFileSize GetFullPathNameW GetLastError GetModuleFileNameW GetModuleHandleA GetModuleHandleExA GetProcAddress GetShortPathNameW GetStartupInfoW GetStdHandle GetSystemTimeAsFileTime GetTempPathW InitializeCriticalSection K32GetModuleFileNameExW LeaveCriticalSection LoadLibraryExW MapViewOfFile OpenProcess QueryPerformanceCounter ReadFile SetConsoleCtrlHandler SetDllDirectoryW SetEnvironmentVariableW SetUnhandledExceptionFilter Sleep TerminateProcess TlsGetValue UnmapViewOfFile VirtualProtect VirtualQuery WaitForSingleObject WideCharToMultiByte WriteFile

shell32

CommandLineToArgvW SHFileOperationW SHGetFolderPathW

api-ms-win-crt-math-l1-1-0

__setusermatherr

api-ms-win-crt-environment-l1-1-0

__p__wenviron

Name

.text

Size

154KB

Virtual Size

153KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

11.4MB

Virtual Size

11.4MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

512B

Virtual Size

178KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

11KB

Virtual Size

10KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

512B

Virtual Size

128B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

fileupgrade.exe

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-filesystem-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-private-l1-1-0

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-string-l1-1-0

kernel32

shell32

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-environment-l1-1-0

generic