691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77

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General

Target
691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77
Size 2.0MB
Sample261003-nrccvsys5k
SHA256 691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77
MD5 11b6277f8f521eb0d568bb40def95d1c
SHA1 4a904ee54ae4ccf0fd190211204ca679f0a0cb59
SHA512 19113dd7687dc6fedd011f474a31bea5afc253db14a826b5468e28e96e8407b62c41ce5dbec2766b76533609847d135a0c84c24cac83975458ccfc044b7a0bbd
SSDEEP 49152:wf3Mpb72apk58QyUvEh5zePCUG/89uXb:r2j58QpkzyW/89u
TLSH
T1F1A5BE03B2D941E8E0BAD274C7664626EAB27C420B34A6DF0790B6592E37FE45F3D711
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77

File Explorer

691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77

.exe 2.0MB

691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77

IMPHASH f577f291e848399bd227e002f24aae72
SHA256 691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77
MD5 11b6277f8f521eb0d568bb40def95d1c
SHA1 4a904ee54ae4ccf0fd190211204ca679f0a0cb59
SHA512 19113dd7687dc6fedd011f474a31bea5afc253db14a826b5468e28e96e8407b62c41ce5dbec2766b76533609847d135a0c84c24cac83975458ccfc044b7a0bbd
SSDEEP 49152:wf3Mpb72apk58QyUvEh5zePCUG/89uXb:r2j58QpkzyW/89u
TLSH
T1F1A5BE03B2D941E8E0BAD274C7664626EAB27C420B34A6DF0790B6592E37FE45F3D711
MD5 SHA1 SHA512 SSDEEP TLSH

windows:10 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

662768

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

os_update_handler.exe.pdb

advapi32

BuildExplicitAccessWithNameW BuildSecurityDescriptorW BuildTrusteeWithSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorControl GetSecurityDescriptorDacl GetSecurityDescriptorGroup GetSecurityDescriptorOwner GetSecurityDescriptorSacl IsValidAcl IsValidSecurityDescriptor IsValidSid RegCloseKey RegCreateKeyExW RegDeleteKeyExW RegEnumKeyExW RegOpenKeyExW RegQueryValueExW SetEntriesInAclW SetNamedSecurityInfoW SetSecurityInfo

user32

DispatchMessageW GetMessageW PostThreadMessageW TranslateMessage

kernel32

AcquireSRWLockExclusive AddVectoredExceptionHandler CloseHandle CompareStringW CreateDirectoryW CreateEventW CreateFileW CreateNamedPipeW CreateProcessW CreateThread DeleteCriticalSection DeleteFileW DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExpandEnvironmentStringsW FileTimeToSystemTime FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FormatMessageW FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetComputerNameExW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetEnvironmentVariableW GetFileAttributesW GetFileInformationByHandle GetFileSizeEx GetFileTime GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetProductInfo GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetUserDefaultLangID GetVersionExW GetWindowsDirectoryW GlobalMemoryStatusEx InitOnceExecuteOnce InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeSListHead InterlockedPushEntrySList IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LocalFree LockFileEx MultiByteToWideChar OpenProcess OutputDebugStringA OutputDebugStringW PeekNamedPipe QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive RemoveDirectoryW RemoveVectoredExceptionHandler ResetEvent RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetConsoleCtrlHandler SetEndOfFile SetEnvironmentVariableW SetEvent SetFilePointerEx SetLastError SetNamedPipeHandleState SetStdHandle SetThreadInformation SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW SleepEx SwitchToThread SystemTimeToFileTime SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TransactNamedPipe TryAcquireSRWLockExclusive TzSpecificLocalTimeToSystemTime UnhandledExceptionFilter UnlockFileEx UnregisterWaitEx VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitNamedPipeW WakeAllConditionVariable WakeConditionVariable WerRegisterRuntimeExceptionModule WideCharToMultiByte WriteConsoleW WriteFile lstrcmpiW

ole32

CoCreateInstance CoInitializeEx CoRegisterInitializeSpy CoRevokeInitializeSpy CoTaskMemFree CoUninitialize StringFromGUID2

oleaut32

SysFreeString

ntdll

NtClose NtDeleteKey NtOpenKeyEx NtQueryValueKey RtlFormatCurrentUserKeyPath RtlFreeUnicodeString RtlInitUnicodeString

winmm

timeGetTime

shell32

CommandLineToArgvW ord680 SHGetFolderPathW SHGetKnownFolderPath

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

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

RoInitialize RoUninitialize

Name

.text

Size

1.1MB

Virtual Size

1.1MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

202KB

Virtual Size

202KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

60KB

Virtual Size

101KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

39KB

Virtual Size

39KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

12KB

Virtual Size

11KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

140B

Characteristics

Name

.tls

Size

512B

Virtual Size

457B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

CPADinfo

Size

512B

Virtual Size

56B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

LZMADEC

Size

4KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

61KB

Virtual Size

61KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

572KB

Virtual Size

576KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

691cc4dbf766db23a3855d401ffadf72927bb65644f0a0f1193d4bc69fcf2e77

advapi32

user32

kernel32

ole32

oleaut32

ntdll

winmm

shell32

version

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

generic