r77 | f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73

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General

Target
f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73
Size 1.7MB
Sample231214-yre4vsgcck
SHA256 f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73
MD5 100c7080888f38bb0fa57d3380b0c9dc
SHA1 1b791a5b09e883f388ab06f56a22823743ab483a
SHA512 7ac3c8bde8282a92bdba737211c5caf70d9949045e7f1e03d4afb0b9c8aec38d0fb695de7fad8bf0ed394a955f144642f5ba1b855613b6437da3c75cb49c76a9
SSDEEP 24576:u2QpUGbjXOnUxvF6FxoP0E8/7jKeRZMZPjyN4DSVXT5Xf5qqya:u2EbYUx96FxNEA7jL4WN9XT5XRv1
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
f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73

File Explorer

f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73

.exe 1.7MB

f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73

IMPHASH ea35fdc54682288c9e0ad38f9b1b5cf0
SHA256 f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73
MD5 100c7080888f38bb0fa57d3380b0c9dc
SHA1 1b791a5b09e883f388ab06f56a22823743ab483a
SHA512 7ac3c8bde8282a92bdba737211c5caf70d9949045e7f1e03d4afb0b9c8aec38d0fb695de7fad8bf0ed394a955f144642f5ba1b855613b6437da3c75cb49c76a9
SSDEEP 24576:u2QpUGbjXOnUxvF6FxoP0E8/7jKeRZMZPjyN4DSVXT5Xf5qqya:u2EbYUx96FxNEA7jL4WN9XT5XRv1
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch: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

488344

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

UnmapViewOfFile GetProcAddress LoadLibraryW CreateFileW WriteFile GetTempPathW DecodePointer GetLastError HeapAlloc HeapReAlloc HeapFree HeapSize GetProcessHeap InitializeCriticalSectionEx DeleteCriticalSection CreateProcessW GetTickCount GetModuleFileNameW GetModuleHandleW ReadFile WaitNamedPipeW GetModuleHandleA LoadLibraryA MapViewOfFile WritePrivateProfileStringW LoadResource LockResource SizeofResource FindResourceW GetFileAttributesW FreeLibrary LoadLibraryExW MultiByteToWideChar GetCurrentProcess GetTickCount64 IsWow64Process SetLastError GetFileSizeEx WaitForSingleObject ResumeThread CreateDirectoryW LocalFree SetEndOfFile WriteConsoleW SetStdHandle SetEnvironmentVariableW FreeEnvironmentStringsW GetEnvironmentStringsW CreateFileMappingW GetCurrentProcessId Sleep GetPrivateProfileStringW CloseHandle GetCommandLineW GetCommandLineA FindNextFileW FindFirstFileExW FindClose GetOEMCP GetACP IsValidCodePage GetTimeZoneInformation ReadConsoleW SetFilePointerEx GetConsoleMode GetConsoleOutputCP FlushFileBuffers EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW CompareStringW GetFileType GetStdHandle ExitProcess ReleaseSRWLockExclusive AcquireSRWLockExclusive TryAcquireSRWLockExclusive GetCurrentThreadId WideCharToMultiByte GetStringTypeW WaitForSingleObjectEx GetExitCodeThread EncodePointer EnterCriticalSection LeaveCriticalSection QueryPerformanceCounter CompareStringEx GetCPInfo LCMapStringEx WakeAllConditionVariable SleepConditionVariableSRW FlsAlloc FlsGetValue FlsSetValue FlsFree GetSystemTimeAsFileTime RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter TerminateProcess IsProcessorFeaturePresent IsDebuggerPresent GetStartupInfoW InitializeSListHead OutputDebugStringW RaiseException RtlPcToFileHeader RtlUnwindEx InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree CreateThread ExitThread FreeLibraryAndExitThread GetModuleHandleExW RtlUnwind

user32

MessageBoxA MessageBoxW SetProcessDPIAware

advapi32

SetNamedSecurityInfoW GetNamedSecurityInfoW SetEntriesInAclW ConvertStringSidToSidW

shell32

SHGetFolderPathW ShellExecuteW

ole32

CoInitializeEx CoUninitialize

oleaut32

SysAllocString SysFreeString SafeArrayCreate SafeArrayAccessData SafeArrayUnaccessData VariantInit

mscoree

CorBindToRuntime CLRCreateInstance

wininet

InternetReadFile InternetOpenUrlA InternetOpenA HttpQueryInfoA

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

winmm

PlaySoundW

Name

.text

Size

660KB

Virtual Size

660KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

243KB

Virtual Size

243KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

9KB

Virtual Size

19KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

26KB

Virtual Size

26KB

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

835KB

Virtual Size

835KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

f31c1587e95ca26a03d4b0609925750c4a55cbfd4b302324c9a2e030e589ac73

kernel32

user32

advapi32

shell32

ole32

oleaut32

mscoree

wininet

version

winmm

generic