r77 | fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b

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General

Target
fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b
Size 1.6MB
Sample231206-g5stfacb43
SHA256 fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b
MD5 ef964bcb10e9ff1e132f7f95cdd1808a
SHA1 811b1fedac477ca32a5c2614a11b7220bad6d4fe
SHA512 f13f3e44717864fec15d4c10eeb7a65a60461644c33f0ad4a08851a72fd6fc275c1658f94ec963e14c04a36bc1e7bb6b6f7787d875f0580b6be686955d49a4a9
SSDEEP 24576:hc1tcIZ2DIuXLFa0J7sjyoNfLqrnYnj6+1Wv61IOlDSVXT5Xuid95kya:hEcIc5U0Jho12E6X6JaXT5XNdvk1
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
fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b

File Explorer

fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b

.exe 1.6MB

fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b

IMPHASH e4e7acf027cc560387a80dd1b9fb7207
SHA256 fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b
MD5 ef964bcb10e9ff1e132f7f95cdd1808a
SHA1 811b1fedac477ca32a5c2614a11b7220bad6d4fe
SHA512 f13f3e44717864fec15d4c10eeb7a65a60461644c33f0ad4a08851a72fd6fc275c1658f94ec963e14c04a36bc1e7bb6b6f7787d875f0580b6be686955d49a4a9
SSDEEP 24576:hc1tcIZ2DIuXLFa0J7sjyoNfLqrnYnj6+1Wv61IOlDSVXT5Xuid95kya:hEcIc5U0Jho12E6X6JaXT5XNdvk1
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

481672

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

user32

MessageBoxA SetProcessDPIAware MessageBoxW

advapi32

SetEntriesInAclW ConvertStringSidToSidW GetNamedSecurityInfoW SetNamedSecurityInfoW

shell32

SHGetFolderPathW ShellExecuteW

ole32

CoInitializeEx CoUninitialize

oleaut32

SysFreeString SysAllocString VariantInit SafeArrayCreate SafeArrayAccessData SafeArrayUnaccessData

mscoree

CLRCreateInstance CorBindToRuntime

wininet

InternetOpenUrlA InternetOpenA InternetReadFile

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

winmm

PlaySoundW

Name

.text

Size

642KB

Virtual Size

642KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

207KB

Virtual Size

206KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

8KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

25KB

Virtual Size

25KB

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

799KB

Virtual Size

799KB

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

fb8c909ddf2eb76602af2aabcc28451c0721ceef6388b0e14b13e160a7cfc95b

kernel32

user32

advapi32

shell32

ole32

oleaut32

mscoree

wininet

version

winmm

generic