r77 | f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48

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General

Target
f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48
Size 1.2MB
Sample231031-jesrvsbd82
SHA256 f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48
MD5 ca552f168cf2a8d4865fa019f33ff281
SHA1 c70b3bcc5d08e8bc8ca639c5f4d868efaaf908be
SHA512 5fe515c3f592508b1804332730d97f311f5b12542a709727c4d1cf5e7a9e642d1e7158b18b5124ed60fcfcbdef91c41fa32b011c7df5135a23aded15e783bae3
SSDEEP 24576:Ab06syn4jKMjU4fusKmDJ+q+/wXyayDSVXT5XTMUSaNv:D6syn4W+mfeX13XT5XN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

r77

Malware Config

Signatures

R77 family
r77

r77 rootkit payload 1 IoCs

Detects the payload of the r77 rootkit.

resource	yara_rule
sample	r77_payload

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48

File Explorer

f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48

.exe 1.2MB

f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48

IMPHASH 43d8eff1f5703bd00e61a2a2cca7b03e
SHA256 f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48
MD5 ca552f168cf2a8d4865fa019f33ff281
SHA1 c70b3bcc5d08e8bc8ca639c5f4d868efaaf908be
SHA512 5fe515c3f592508b1804332730d97f311f5b12542a709727c4d1cf5e7a9e642d1e7158b18b5124ed60fcfcbdef91c41fa32b011c7df5135a23aded15e783bae3
SSDEEP 24576:Ab06syn4jKMjU4fusKmDJ+q+/wXyayDSVXT5XTMUSaNv:D6syn4W+mfeX13XT5XN
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64

r77 rootkit payload

Detects the payload of the r77 rootkit.
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

198008

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

kernel32

CloseHandle UnmapViewOfFile CreateFileMappingW MapViewOfFile Sleep GetCurrentProcessId LoadLibraryW GetProcAddress WaitNamedPipeW GetLastError CreateFileW ReadFile WriteFile GetModuleHandleA LoadLibraryA GetPrivateProfileStringW WritePrivateProfileStringW GetModuleHandleW FindResourceW LoadResource SizeofResource LockResource InitializeCriticalSectionEx DeleteCriticalSection DecodePointer GetModuleFileNameW HeapAlloc HeapFree HeapReAlloc HeapSize GetProcessHeap CreateProcessW GetTickCount GetTempPathW GetFileAttributesW LoadLibraryExW FreeLibrary MultiByteToWideChar GetCurrentProcess IsWow64Process SetLastError ResumeThread WaitForSingleObject GetFileSizeEx CreateDirectoryW WriteConsoleW SetEnvironmentVariableW FreeEnvironmentStringsW GetEnvironmentStringsW GetCommandLineW GetCommandLineA GetOEMCP GetACP IsValidCodePage FindNextFileW FindFirstFileExW FindClose GetTimeZoneInformation SetStdHandle GetFullPathNameW GetCurrentDirectoryW EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW CompareStringW GetConsoleMode GetConsoleOutputCP FlushFileBuffers SetFilePointerEx LocalFree WideCharToMultiByte GetStringTypeW WaitForSingleObjectEx GetCurrentThreadId GetExitCodeThread ReleaseSRWLockExclusive AcquireSRWLockExclusive TryAcquireSRWLockExclusive EnterCriticalSection LeaveCriticalSection EncodePointer LCMapStringEx QueryPerformanceCounter CompareStringEx GetCPInfo GetSystemTimeAsFileTime RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter TerminateProcess IsProcessorFeaturePresent IsDebuggerPresent GetStartupInfoW InitializeSListHead OutputDebugStringW RaiseException RtlUnwindEx RtlPcToFileHeader InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree GetDriveTypeW GetFileInformationByHandle GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime ExitProcess GetModuleHandleExW CreateThread ExitThread FreeLibraryAndExitThread GetStdHandle

user32

MessageBoxW MessageBoxA SetProcessDPIAware

shell32

SHGetFolderPathW

ole32

CoInitializeEx CoUninitialize

oleaut32

SysFreeString SysAllocString VariantInit SafeArrayCreate SafeArrayAccessData SafeArrayUnaccessData

mscoree

CLRCreateInstance CorBindToRuntime

wininet

InternetOpenUrlA InternetOpenA InternetReadFile

version

VerQueryValueW GetFileVersionInfoW GetFileVersionInfoSizeW

winmm

PlaySoundW

Name

.text

Size

338KB

Virtual Size

337KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

111KB

Virtual Size

110KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

6KB

Virtual Size

14KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

15KB

Virtual Size

15KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

348B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

788KB

Virtual Size

787KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

3KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

f3cb8d0787dc4dcfb36e43ac8515450c2e396cfa5d53e512aa88fca59c58cd48

kernel32

user32

shell32

ole32

oleaut32

mscoree

wininet

version

winmm

generic