chrome_update[.]exe

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General

Target
chrome_update.exe
Size 1.2MB
Sample260528-alezxady8x
SHA256 7f0d2adbc838115943ee2d5b779e51070c81038df16cab31c8449ea01189cce7
MD5 b323c2e5fc6f49a598d9323798c13c40
SHA1 5497c7466da71f8957e1085935c9dcb1e766367a
SHA512 0a1e3057726b83bc41f408400d1ce4f94525f21be2033000f76a5a52d0f42b54eb81379179ad6818fd5f82edd1322a1398b5ae7c73c5205619278bc57a5a1dfd
SSDEEP 24576:xR8g0OxeBrYkRyJP5ComrFwbO1SKazMKxJeNJtURLvMPDefSFcW:z89eeBxSbg0oNJtURQyecW
TLSH
T1F055235F2BFA34E5F0328B32C9480F40FB72BD7A5350976F02D4429A5E565E19E2CB25
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 1.2MB

chrome_update.exe

IMPHASH cba2f4ba69a75af73684957a86e1152f
SHA256 7f0d2adbc838115943ee2d5b779e51070c81038df16cab31c8449ea01189cce7
MD5 b323c2e5fc6f49a598d9323798c13c40
SHA1 5497c7466da71f8957e1085935c9dcb1e766367a
SHA512 0a1e3057726b83bc41f408400d1ce4f94525f21be2033000f76a5a52d0f42b54eb81379179ad6818fd5f82edd1322a1398b5ae7c73c5205619278bc57a5a1dfd
SSDEEP 24576:xR8g0OxeBrYkRyJP5ComrFwbO1SKazMKxJeNJtURLvMPDefSFcW:z89eeBxSbg0oNJtURQyecW
TLSH
T1F055235F2BFA34E5F0328B32C9480F40FB72BD7A5350976F02D4429A5E565E19E2CB25
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

8948

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

BCryptSetProperty BCryptCloseAlgorithmProvider BCryptGenerateSymmetricKey BCryptOpenAlgorithmProvider BCryptDestroyKey BCryptDecrypt

ole32

CoInitializeEx CoUninitialize

oleaut32

SafeArrayCreate SafeArrayDestroy SafeArrayAccessData SafeArrayUnaccessData VariantClear VariantInit SafeArrayCreateVector SafeArrayPutElement

user32

GetCursorPos GetSystemMetrics

kernel32

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

advapi32

RegOpenKeyExA RegCloseKey RegQueryInfoKeyA

Name

.text

Size

54KB

Virtual Size

54KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

40KB

Virtual Size

39KB

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

1.1MB

Virtual Size

1.1MB

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

generic