C:\MeshAgent\MeshAgent\Release\MeshService64.pdb
Behavioral task
behavioral1
Sample
2024-11-22_656dc51440dc6eb772c4d748e2dbcbc6_ismagent_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-22_656dc51440dc6eb772c4d748e2dbcbc6_ismagent_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-22_656dc51440dc6eb772c4d748e2dbcbc6_ismagent_ryuk
-
Size
3.3MB
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MD5
656dc51440dc6eb772c4d748e2dbcbc6
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SHA1
55deb58521c6a675c220cbad8ec13df796789557
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SHA256
75b5de41fc720648252d75b1a8e717e4585ce0ac256b8288f3fcbde8224c4062
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SHA512
b9289e8b3cfebce1b55189a8281bc7eeaf457c9da661e858381ca8c137353c716d22087235bd20b9cb8adebe480320117e0fbabfc4df0ac21e54c78aa26fcec5
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SSDEEP
49152:aX3YnLOQYsZfQ74C6SkgSbXP31+frjUYuHi7nT8poDMFvfuJ1kZ79bjHQeq5Pb:alRsZ47/QXoHUOfAoz1Lxb
Malware Config
Extracted
meshagent
2
milford.local\Administrator;!pUb]w5m{dcR!PS5
http://193.46.255.73:443/agent.ashx
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mesh_id
0x1BB8AD1663F202EB7C6DF4CCC6A0180FC79443F53DF36DF72D67BCCD9F34D39D465145AB6E76B3303C35C9731AE22375
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server_id
38C87A59D8DA58C7A7F12A7830D25E5D849272811E90124F6A4059C3EB86F2BFA6C9C793837901C5639BC53239220AA0
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wss
wss://193.46.255.73:443/agent.ashx
Signatures
-
Detects MeshAgent payload 1 IoCs
Processes:
resource yara_rule sample family_meshagent -
Meshagent family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource 2024-11-22_656dc51440dc6eb772c4d748e2dbcbc6_ismagent_ryuk
Files
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2024-11-22_656dc51440dc6eb772c4d748e2dbcbc6_ismagent_ryuk.exe windows:6 windows x64 arch:x64
fb0a8b4a81655f744a37af985e009476
Headers
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
Imports
comctl32
InitCommonControlsEx
dbghelp
SymInitialize
SymGetModuleBase64
SymGetLineFromAddr64
SymFunctionTableAccess64
SymFromAddr
StackWalk64
MiniDumpWriteDump
iphlpapi
GetAdaptersAddresses
SendARP
ConvertLengthToIpv4Mask
GetAdaptersInfo
ws2_32
WSACloseEvent
htons
htonl
gethostname
ntohs
ntohl
WSAGetLastError
ioctlsocket
recv
WSASetLastError
send
getsockname
WSASocketW
listen
closesocket
bind
accept
__WSAFDIsSet
setsockopt
socket
sendto
getsockopt
recvfrom
connect
shutdown
WSAIoctl
GetAddrInfoW
WSAResetEvent
WSAEventSelect
WSAStartup
WSACreateEvent
WSACleanup
FreeAddrInfoW
select
crypt32
CertFindCertificateInStore
CertDuplicateCertificateContext
CertDeleteCertificateFromStore
CryptAcquireCertificatePrivateKey
CertAddEncodedCertificateToStore
CryptMsgClose
CryptMsgUpdate
CryptExportPublicKeyInfo
CertCreateSelfSignCertificate
CertFreeCertificateContext
CryptMsgOpenToEncode
CertAddCertificateContextToStore
PFXExportCertStore
CryptSignAndEncodeCertificate
CertCloseStore
CertStrToNameA
CryptMsgGetParam
CryptEncodeObject
CertSetCertificateContextProperty
CertGetCertificateContextProperty
CryptMsgCalculateEncodedLength
CertOpenStore
CertStrToNameW
CertEnumCertificatesInStore
gdiplus
GdipGetImageEncoders
GdiplusShutdown
GdipCloneImage
GdipAlloc
GdipDisposeImage
GdipFree
GdipGetImageEncodersSize
GdipLoadImageFromStream
GdipSaveImageToStream
GdiplusStartup
ncrypt
NCryptCreatePersistedKey
NCryptFreeObject
NCryptSetProperty
BCryptCloseAlgorithmProvider
BCryptGenRandom
NCryptOpenStorageProvider
BCryptOpenAlgorithmProvider
NCryptFinalizeKey
kernel32
InitializeSListHead
GetStartupInfoW
RtlUnwindEx
GetFullPathNameW
GetStdHandle
WriteFile
LoadLibraryExA
GetModuleFileNameW
GetSystemPowerStatus
OpenProcess
MultiByteToWideChar
Sleep
GetLastError
CloseHandle
GetCurrentDirectoryW
SetCurrentDirectoryW
GetProcAddress
SetEnvironmentVariableA
CreateProcessW
FreeLibrary
WideCharToMultiByte
GetCurrentThreadId
GetModuleHandleA
WaitForSingleObjectEx
CreateThread
QueueUserAPC
OpenThread
ReadFile
LoadLibraryA
SleepEx
SetSystemPowerState
GetCurrentProcess
SetThreadExecutionState
HeapFree
HeapAlloc
GetProcessHeap
SystemTimeToFileTime
GetSystemTime
FileTimeToSystemTime
SystemTimeToTzSpecificLocalTime
QueryPerformanceCounter
ReleaseSemaphore
WaitForSingleObject
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
SetConsoleMode
GetConsoleMode
SetConsoleOutputCP
IsDebuggerPresent
TerminateProcess
GetTempPathW
CancelSynchronousIo
SetEvent
ResetEvent
IsProcessorFeaturePresent
GetCurrentProcessId
GetEnvironmentStrings
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
ConvertFiberToThread
ConvertThreadToFiber
GetEnvironmentVariableW
ReadConsoleA
ReadConsoleW
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
UnhandledExceptionFilter
RtlLookupFunctionEntry
GetThreadId
RtlVirtualUnwind
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
RaiseException
HeapSize
RtlPcToFileHeader
QueryPerformanceFrequency
EncodePointer
user32
EndDialog
SetWindowTextW
GetWindowPlacement
ShowWindow
GetDlgCtrlID
SetWindowPlacement
SetWindowTextA
IsDlgButtonChecked
GetDlgItem
CheckDlgButton
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
MessageBoxW
GetUserObjectInformationW
GetProcessWindowStation
DispatchMessageA
CreateWindowExW
GetWindowRect
gdi32
SetBkMode
SetBkColor
CreateSolidBrush
BitBlt
StretchBlt
DeleteDC
SetStretchBltMode
CreateCompatibleBitmap
GetObjectA
SelectObject
CreateCompatibleDC
GetDIBits
DeleteObject
SetTextColor
GetStockObject
advapi32
CloseServiceHandle
AllocateAndInitializeSid
CryptEnumProvidersW
CryptSignHashW
CryptDestroyHash
CryptCreateHash
CryptDecrypt
CryptExportKey
CryptGetUserKey
CryptGetProvParam
CryptSetHashParam
CryptAcquireContextW
ReportEventW
RegisterEventSourceW
DeregisterEventSource
StartServiceCtrlDispatcherA
RegCreateKeyW
RegSetValueExA
RegDeleteKeyA
RegCloseKey
RegOpenKeyExA
OpenProcessToken
InitiateSystemShutdownA
LookupPrivilegeValueA
AdjustTokenPrivileges
CryptReleaseContext
RegSetValueExW
CryptDestroyKey
InitializeSecurityDescriptor
SetEntriesInAclA
SetSecurityDescriptorDacl
DuplicateTokenEx
CreateProcessAsUserW
SetTokenInformation
OpenServiceA
CheckTokenMembership
FreeSid
RegisterServiceCtrlHandlerExA
OpenSCManagerA
SetServiceStatus
QueryServiceStatus
shell32
ShellExecuteExW
ole32
CoInitializeEx
CreateStreamOnHGlobal
CoUninitialize
Sections
.text Size: 2.0MB - Virtual size: 2.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 981KB - Virtual size: 981KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 39KB - Virtual size: 201KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 102KB - Virtual size: 101KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 196B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 136KB - Virtual size: 135KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ