r77 | a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2

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General

Target
a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2
Size 1.5MB
Sample231118-c64j4she87
SHA256 a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2
MD5 d731871368d737e84ce2ec4d0f3ce965
SHA1 dbdfcbd655b43c57954786e4b681a3c67c5ff55e
SHA512 a021f0527c6fbde19ffb38144d53d3a801b7f6b837a666a1f7bc6bf6aee6bcf3c191649f6cfe3e0eb6df1d7b4f2e04670ca0e1b7562e3099a251408d1db2489a
SSDEEP 24576:OCwo6R32ROCjUO+MDLh7v8N2MlguXY/6DSVXT5XBraGya3AWOE:yGROCjUO+ELEet3XT5XBraG1w4
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
a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2

File Explorer

a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2

.exe 1.5MB

a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2

IMPHASH e545b83262b11a40b2afb96de2e170e3
SHA256 a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2
MD5 d731871368d737e84ce2ec4d0f3ce965
SHA1 dbdfcbd655b43c57954786e4b681a3c67c5ff55e
SHA512 a021f0527c6fbde19ffb38144d53d3a801b7f6b837a666a1f7bc6bf6aee6bcf3c191649f6cfe3e0eb6df1d7b4f2e04670ca0e1b7562e3099a251408d1db2489a
SSDEEP 24576:OCwo6R32ROCjUO+MDLh7v8N2MlguXY/6DSVXT5XBraGya3AWOE:yGROCjUO+ELEet3XT5XBraG1w4
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

249992

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

GetCurrentProcessId GetTempPathW CreateDirectoryW LoadLibraryW GetProcAddress WaitNamedPipeW GetLastError CreateFileW ReadFile WriteFile GetModuleHandleA LoadLibraryA GetPrivateProfileStringW WritePrivateProfileStringW GetModuleHandleW FindResourceW LoadResource SizeofResource LockResource InitializeCriticalSectionEx DeleteCriticalSection DecodePointer GetModuleFileNameW Sleep HeapAlloc HeapFree HeapReAlloc HeapSize GetProcessHeap CreateProcessW GetTickCount GetFileAttributesW LoadLibraryExW FreeLibrary MultiByteToWideChar GetCurrentProcess IsWow64Process SetLastError ResumeThread WaitForSingleObject LocalFree WriteConsoleW SetEnvironmentVariableW FreeEnvironmentStringsW GetEnvironmentStringsW GetCommandLineW MapViewOfFile CreateFileMappingW UnmapViewOfFile CloseHandle GetCommandLineA GetOEMCP GetACP IsValidCodePage FindNextFileW FindFirstFileExW FindClose GetTimeZoneInformation SetStdHandle GetFullPathNameW GetCurrentDirectoryW EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW CompareStringW GetConsoleMode GetConsoleOutputCP FlushFileBuffers SetFilePointerEx 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

advapi32

SetEntriesInAclW ConvertStringSidToSidW GetNamedSecurityInfoW SetNamedSecurityInfoW

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

387KB

Virtual Size

387KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

114KB

Virtual Size

113KB

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

18KB

Virtual Size

17KB

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

1004KB

Virtual Size

1003KB

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

a21b338c98848bbbee771516139d4fcd8241ca24766037b7105dbd40d5016dc2

kernel32

user32

advapi32

shell32

ole32

oleaut32

mscoree

wininet

version

winmm

generic