meshagent | 2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver

Sharing

Copy URL Twitter E-mail

General

Target
2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver
Size 3.2MB
Sample241007-1986rszdpc
SHA256 1d47d11dc976beb251c9650e524ddbebcb05cd00fdd1b577b6d714c13fd5370c
MD5 38d91a4930a59eab50c252452b636380
SHA1 f1933f56f18223c2fcb497c472c513414a04b4d1
SHA512 d8e28025f42a102a0b1ca6dc7ae4b4b902f1e06043ef7f5a33743a4b8661b68d970a6559d296be66ba1fdc99b3224e3bc4689ee1d60477f9336f79e3546ce09a
SSDEEP 49152:20yAXvucS6SnbZVlxyZH0XAaCx5OX9ZO/xtEfOfzMFvfDTtKjkVE+ubDw8litYOu:tvg6ClrBCjec+OfAK7DuYOQr
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

uceda school - eastern meshagent

Malware Config

Extracted

Family

meshagent

Version

Botnet

Uceda School - Eastern

http://remote.opennology.com:443/agent.ashx

Attributes

mesh_id
0x90E2DE221F7B3845544A9C06ADF516B97090FF8BC58BA0AB1B645332B682F094AD68D97F32BDC1025EB5284F3F06A3B4
server_id
CEA0C3AF6448380189838E51FE29C7BDFDCC5A7E86351147799A84708BCD06B563FA9701A30D129D9BAAE972A73B5591
wss
wss://remote.opennology.com:443/agent.ashx

Signatures

Detects MeshAgent payload 1 IoCs

resource	yara_rule
sample	family_meshagent

Meshagent family
meshagent

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver

File Explorer

2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver

.exe 3.2MB

2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver

IMPHASH de9d50d41586565d7f7d04f9c85905a2
SHA256 1d47d11dc976beb251c9650e524ddbebcb05cd00fdd1b577b6d714c13fd5370c
MD5 38d91a4930a59eab50c252452b636380
SHA1 f1933f56f18223c2fcb497c472c513414a04b4d1
SHA512 d8e28025f42a102a0b1ca6dc7ae4b4b902f1e06043ef7f5a33743a4b8661b68d970a6559d296be66ba1fdc99b3224e3bc4689ee1d60477f9336f79e3546ce09a
SSDEEP 49152:20yAXvucS6SnbZVlxyZH0XAaCx5OX9ZO/xtEfOfzMFvfDTtKjkVE+ubDw8litYOu:tvg6ClrBCjec+OfAK7DuYOQr
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

Detects MeshAgent payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

1889180

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

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

C:\MeshAgent\MeshAgent\Release\MeshService64.pdb

dbghelp

MiniDumpWriteDump SymFromAddr StackWalk64 SymInitialize SymFunctionTableAccess64 SymGetLineFromAddr64 SymGetModuleBase64

iphlpapi

GetAdaptersAddresses SendARP ConvertLengthToIpv4Mask GetAdaptersInfo

ws2_32

ntohl WSAGetLastError ioctlsocket recv gethostname htonl htons ntohs WSASetLastError send getsockname WSASocketW listen closesocket bind accept __WSAFDIsSet setsockopt socket sendto getsockopt recvfrom connect shutdown WSAIoctl GetAddrInfoW WSAResetEvent WSAEventSelect WSAStartup WSACreateEvent WSACloseEvent select WSACleanup FreeAddrInfoW

crypt32

CertEnumCertificatesInStore CertDeleteCertificateFromStore CryptAcquireCertificatePrivateKey CertAddEncodedCertificateToStore CryptMsgClose CryptMsgUpdate CryptExportPublicKeyInfo CertCreateSelfSignCertificate CertFreeCertificateContext CryptMsgOpenToEncode CertAddCertificateContextToStore PFXExportCertStore CryptSignAndEncodeCertificate CertCloseStore CertStrToNameA CryptMsgGetParam CryptEncodeObject CertSetCertificateContextProperty CertFindCertificateInStore CryptMsgCalculateEncodedLength CertOpenStore CertStrToNameW CertDuplicateCertificateContext CertGetCertificateContextProperty

gdiplus

GdipGetImageEncoders GdipCloneImage GdiplusStartup GdipAlloc GdipDisposeImage GdipFree GdipGetImageEncodersSize GdipSaveImageToStream GdiplusShutdown GdipLoadImageFromStream

ncrypt

NCryptCreatePersistedKey NCryptFreeObject NCryptFinalizeKey BCryptOpenAlgorithmProvider NCryptOpenStorageProvider BCryptGenRandom NCryptSetProperty BCryptCloseAlgorithmProvider

kernel32

InitializeSListHead GetStartupInfoW RtlUnwindEx GetFullPathNameW GetStdHandle WriteFile LoadLibraryExA GetModuleFileNameW GetSystemPowerStatus OpenProcess MultiByteToWideChar Sleep GetLastError CloseHandle GetCurrentDirectoryW SetCurrentDirectoryW GetProcAddress SetEnvironmentVariableA CreateProcessW FreeLibrary WideCharToMultiByte WaitForSingleObject GetCurrentThreadId GetModuleHandleA CreateThread QueueUserAPC OpenThread ReadFile LoadLibraryA SleepEx SetSystemPowerState GetCurrentProcess SetThreadExecutionState HeapFree HeapAlloc GetProcessHeap SystemTimeToFileTime GetSystemTime FileTimeToSystemTime QueryPerformanceFrequency QueryPerformanceCounter ReleaseSemaphore CreateSemaphoreA CancelIo FindFirstFileW FindNextFileW RemoveDirectoryW GetFinalPathNameByHandleW GetDriveTypeA SetFilePointer FindFirstVolumeA FindClose CreateFileW GetVolumePathNamesForVolumeNameA GetFileAttributesExW ReadDirectoryChangesW FindNextVolumeA FindVolumeClose GetDiskFreeSpaceExA CreateEventA GetModuleHandleExA WaitForMultipleObjectsEx CreateNamedPipeA DisconnectNamedPipe CreateFileA CancelIoEx LocalFree ConnectNamedPipe SetConsoleOutputCP IsDebuggerPresent TerminateProcess GetTempPathW CancelSynchronousIo SetEvent WaitForSingleObjectEx ResetEvent GetThreadId GetCurrentProcessId IsProcessorFeaturePresent FreeEnvironmentStringsA CopyFileW RtlCaptureContext SuspendThread ResumeThread DuplicateHandle GetTickCount64 GetCurrentThread GetOverlappedResult GetThreadContext WTSGetActiveConsoleSessionId GetExitCodeProcess SetEndOfFile DeleteFileW SetFilePointerEx SetConsoleCtrlHandler FreeConsole LoadLibraryExW SetLastError GetFileType GetModuleHandleW SwitchToFiber DeleteFiber CreateFiber GetSystemTimeAsFileTime EncodePointer ConvertThreadToFiber GetEnvironmentVariableW GetConsoleMode ReadConsoleA ReadConsoleW SetConsoleMode EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree ExitProcess GetModuleHandleExW CreateDirectoryW GetConsoleCP MoveFileExW SetEnvironmentVariableW GetTimeZoneInformation SetStdHandle GetDriveTypeW PeekNamedPipe GetCommandLineA GetCommandLineW GetACP GetDateFormatW GetTimeFormatW CompareStringW LCMapStringW GetStringTypeW HeapReAlloc FlushFileBuffers WriteConsoleW GetCPInfo FindFirstFileExW SetUnhandledExceptionFilter RtlLookupFunctionEntry RtlVirtualUnwind GetEnvironmentStrings UnhandledExceptionFilter IsValidCodePage GetOEMCP GetEnvironmentStringsW FreeEnvironmentStringsW RaiseException HeapSize RtlPcToFileHeader SystemTimeToTzSpecificLocalTime ConvertFiberToThread

user32

EndDialog SetWindowTextW GetWindowPlacement ShowWindow SetWindowPlacement SetWindowTextA GetDlgItem DialogBoxParamW EnableWindow MessageBeep ExitWindowsEx GetUserObjectInformationA EnumDisplayMonitors GetSystemMetrics SetThreadDesktop GetThreadDesktop CloseDesktop BlockInput GetMonitorInfoA OpenInputDesktop GetKeyState GetMessageA GetMessageExtraInfo SendMessageW LoadCursorA DestroyWindow GetDC PostMessageA GetIconInfo CallNextHookEx GetCursorInfo SetWindowsHookExA MapVirtualKeyA GetForegroundWindow UnhookWindowsHookEx DefWindowProcA CreateWindowExA TranslateMessage UnregisterClassA DrawIconEx SetWinEventHook RegisterClassExA UnhookWinEvent SetForegroundWindow ReleaseDC SendInput SetProcessDPIAware GetWindowRect GetProcessWindowStation GetUserObjectInformationW MessageBoxW DispatchMessageA

gdi32

GetStockObject SetTextColor SetBkMode CreateSolidBrush BitBlt StretchBlt DeleteDC CreateCompatibleDC SetStretchBltMode CreateCompatibleBitmap GetObjectA DeleteObject GetDIBits SelectObject

advapi32

QueryServiceStatus RegisterEventSourceW DeregisterEventSource CryptEnumProvidersW CryptSignHashW CryptDestroyHash CryptCreateHash CryptDecrypt CryptExportKey CryptGetUserKey CryptGetProvParam CryptSetHashParam CryptAcquireContextW RegDeleteValueA RegCreateKeyW RegOpenKeyExA RegSetValueExA RegQueryValueExA RegDeleteKeyA RegCloseKey OpenProcessToken InitiateSystemShutdownA LookupPrivilegeValueA AdjustTokenPrivileges CryptReleaseContext RegSetValueExW CryptDestroyKey InitializeSecurityDescriptor SetEntriesInAclA SetSecurityDescriptorDacl DuplicateTokenEx CreateProcessAsUserW SetTokenInformation OpenServiceA CheckTokenMembership FreeSid RegisterServiceCtrlHandlerExA OpenSCManagerA SetServiceStatus AllocateAndInitializeSid CloseServiceHandle StartServiceCtrlDispatcherA ReportEventW

shell32

ShellExecuteExW

ole32

CoUninitialize CoInitializeEx CoCreateInstance CreateStreamOnHGlobal

oleaut32

SysFreeString SysStringLen SysAllocString

Name

.text

Size

2.0MB

Virtual Size

2.0MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

902KB

Virtual Size

902KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

34KB

Virtual Size

194KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

101KB

Virtual Size

100KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gfids

Size

512B

Virtual Size

196B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

136KB

Virtual Size

135KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

19KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Extracted

Signatures

File Explorer

2024-10-07_38d91a4930a59eab50c252452b636380_ryuk_sliver

dbghelp

iphlpapi

ws2_32

crypt32

gdiplus

ncrypt

kernel32

user32

gdi32

advapi32

shell32

ole32

oleaut32

generic