r77 | Updated2024[.]03[.]08[.]exe

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General

Target
Updated2024.03.08.exe
Size 1.7MB
Sample241007-kn67aazglc
SHA256 f0854ba0a7771b27206c4c87a29bcbf6ca0993b97b3bc03dcc43754ead33c928
MD5 3cab7de511d84567d768dcd225b842f5
SHA1 8044703032780636f9e215572995618beda90205
SHA512 416a93616909a039bf3ae7df199090b73400e8464f04f9fd02f6110c2e541815d98a64ee8c8824bf6be4068569ea530d1a0923c45e7690cd1ba0daa4bf2d9b56
SSDEEP 24576:gqNmAa+VkAB+aOB2jghQT8yNFhD5guD5UXDSVXT5Xjbqya:gqN3a+7BPOB2jgupN5HmkXT5Xy1
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
Updated2024.03.08.exe

File Explorer

Updated2024.03.08.exe

.exe 1.7MB

Updated2024.03.08.exe

IMPHASH 4021667ce7f494810a13699917c8dd88
SHA256 f0854ba0a7771b27206c4c87a29bcbf6ca0993b97b3bc03dcc43754ead33c928
MD5 3cab7de511d84567d768dcd225b842f5
SHA1 8044703032780636f9e215572995618beda90205
SHA512 416a93616909a039bf3ae7df199090b73400e8464f04f9fd02f6110c2e541815d98a64ee8c8824bf6be4068569ea530d1a0923c45e7690cd1ba0daa4bf2d9b56
SSDEEP 24576:gqNmAa+VkAB+aOB2jghQT8yNFhD5guD5UXDSVXT5Xjbqya:gqN3a+7BPOB2jgupN5HmkXT5Xy1
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

500856

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 FreeEnvironmentStringsW GetEnvironmentStringsW CreateFileMappingW GetCurrentProcessId Sleep GetPrivateProfileStringW CloseHandle GetCommandLineW GetCommandLineA FindNextFileW FindFirstFileExW FindClose GetOEMCP GetACP IsValidCodePage ReadConsoleW SetFilePointerEx GetConsoleMode GetConsoleOutputCP FlushFileBuffers EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW GetFileType GetStdHandle ExitProcess ReleaseSRWLockExclusive AcquireSRWLockExclusive TryAcquireSRWLockExclusive GetCurrentThreadId WideCharToMultiByte GetStringTypeW WaitForSingleObjectEx GetExitCodeThread EncodePointer EnterCriticalSection LeaveCriticalSection QueryPerformanceCounter CompareStringEx GetCPInfo LCMapStringEx WakeAllConditionVariable SleepConditionVariableSRW 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

654KB

Virtual Size

654KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

252KB

Virtual Size

252KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

10KB

Virtual Size

20KB

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

832KB

Virtual Size

832KB

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

Updated2024.03.08.exe

kernel32

user32

advapi32

shell32

ole32

oleaut32

mscoree

wininet

version

winmm

generic