chrome_update[.]exe

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General

Target
chrome_update.exe
Size 1.3MB
Sample260519-pg9faaby9t
SHA256 f49d12a0fde981beb9bd9060f5f7caad8929e213b38f65dcf3565623828542d1
MD5 7a5d43b0f969cd345d0fbac7c404dcbb
SHA1 961fea7e0a6e9165e282a5f42a44507d23db10d6
SHA512 5a28e7a52682bd44cd4972b06ec7b0d7599eb293c8834b01d8371360f3829fa671c0944300f1e637f46a339912eda1ee818c1dc6516bfa1fd18a47d1d932dcb6
SSDEEP 24576:BEDOIfTYc3sNVTfXBytpOjvo2f9fzBNU0sScTZ3H:FIb7SP8OjQ2LBNU07uZX
TLSH
T1935522176EBF3DEAE56600B6C168588DA721BD7103209F9FD2167D0F3E725C98C3AA11
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
chrome_update.exe

File Explorer

chrome_update.exe

.exe 1.3MB

chrome_update.exe

IMPHASH fa18060b9e29639e6b6e200299ec84e0
SHA256 f49d12a0fde981beb9bd9060f5f7caad8929e213b38f65dcf3565623828542d1
MD5 7a5d43b0f969cd345d0fbac7c404dcbb
SHA1 961fea7e0a6e9165e282a5f42a44507d23db10d6
SHA512 5a28e7a52682bd44cd4972b06ec7b0d7599eb293c8834b01d8371360f3829fa671c0944300f1e637f46a339912eda1ee818c1dc6516bfa1fd18a47d1d932dcb6
SSDEEP 24576:BEDOIfTYc3sNVTfXBytpOjvo2f9fzBNU0sScTZ3H:FIb7SP8OjQ2LBNU07uZX
TLSH
T1935522176EBF3DEAE56600B6C168588DA721BD7103209F9FD2167D0F3E725C98C3AA11
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

11664

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

bcrypt

BCryptDecrypt BCryptSetProperty BCryptCloseAlgorithmProvider BCryptGenerateSymmetricKey BCryptDestroyKey BCryptOpenAlgorithmProvider

ole32

CoInitializeEx CoUninitialize

oleaut32

SafeArrayCreateVector VariantInit VariantClear SafeArrayUnaccessData SafeArrayDestroy SafeArrayCreate SafeArrayAccessData SafeArrayPutElement

user32

GetSystemMetrics LoadCursorA DestroyWindow CreateWindowExA GetDC UnregisterClassA DefWindowProcA PeekMessageA ReleaseDC TranslateMessage wsprintfA GetWindowRect GetCursorPos RegisterClassExA GetDesktopWindow IsWindowVisible DispatchMessageA

kernel32

GetConsoleMode GetConsoleOutputCP FlushFileBuffers HeapReAlloc HeapSize LCMapStringW LoadLibraryExW GetStringTypeW GetFileType SetStdHandle FreeEnvironmentStringsW GetEnvironmentStringsW WideCharToMultiByte MultiByteToWideChar GetCommandLineW GetCommandLineA GetCPInfo GetOEMCP IsValidCodePage GetEnvironmentVariableA ExpandEnvironmentStringsA GetCurrentDirectoryA FindClose FindFirstFileA FindNextFileA GetFileAttributesA GetTempPathA CloseHandle GetLastError AddVectoredExceptionHandler QueryPerformanceCounter QueryPerformanceFrequency GetProcessHeap CreateMutexA Sleep GetCurrentProcess GetCurrentProcessId CreateThread GetCurrentThreadId OpenThread SetThreadContext GlobalMemoryStatusEx GetSystemInfo GetTickCount GetTickCount64 GetSystemDirectoryA GetWindowsDirectoryA VirtualAlloc VirtualProtect VirtualFree GetModuleFileNameA GetModuleHandleA GetProcAddress LoadResource LockResource SizeofResource LoadLibraryA FindResourceA GetACP K32EnumProcesses FindNextFileW SetFilePointerEx CreateFileW WriteConsoleW GetDiskFreeSpaceExA FindFirstFileExW HeapFree HeapAlloc UnhandledExceptionFilter IsDebuggerPresent GetSystemTimeAsFileTime InitializeSListHead SetUnhandledExceptionFilter GetStartupInfoW GetModuleHandleW RtlUnwindEx SetLastError FlsAlloc FlsGetValue FlsSetValue FlsFree EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection RtlLookupFunctionEntry EncodePointer RaiseException RtlPcToFileHeader GetStdHandle WriteFile GetModuleFileNameW ExitProcess TerminateProcess FreeLibrary GetModuleHandleExW IsProcessorFeaturePresent RtlCaptureContext RtlVirtualUnwind

advapi32

RegCloseKey RegQueryValueExA RegQueryInfoKeyA RegOpenKeyExA

gdi32

EnumFontFamiliesExA

shell32

SHGetFolderPathA

shlwapi

PathFileExistsA

version

GetFileVersionInfoSizeA

Name

.text

Size

57KB

Virtual Size

57KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

42KB

Virtual Size

41KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

1.2MB

Virtual Size

1.2MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

chrome_update.exe

bcrypt

ole32

oleaut32

user32

kernel32

advapi32

gdi32

shell32

shlwapi

version

generic