maintenanceservice.pdb
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-10_1b272a5b63ea77743af0e5693445fa91_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-10_1b272a5b63ea77743af0e5693445fa91_ryuk.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-10_1b272a5b63ea77743af0e5693445fa91_ryuk
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Size
1.4MB
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MD5
1b272a5b63ea77743af0e5693445fa91
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SHA1
251154c1abf0b0526115e74ffae6d53b8ba4c483
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SHA256
d947dfc506b71fe6630b4265ed361d8d2001b8396fc583990e083b7d77c21013
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SHA512
3c83b46493bef4688fdedfe15ce478bdb4d0b42accca25b18f4edafb96f74b118a739bd46a8f9f3997d8f821abfc94ec4f99b41b97fffac7c7ee2571c2256a48
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SSDEEP
24576:8PsJcui5TNjx+mZCkt76f/24pN+XNqNG6hditW:8wcugf9Ckt7c20+9qNxUW
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-10_1b272a5b63ea77743af0e5693445fa91_ryuk
Files
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2024-06-10_1b272a5b63ea77743af0e5693445fa91_ryuk.exe windows:6 windows x64 arch:x64
1a43a4990502ce08969e24eef5b26241
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
PDB Paths
Imports
advapi32
AdjustTokenPrivileges
ChangeServiceConfig2W
ChangeServiceConfigW
CloseServiceHandle
ControlService
CreateServiceW
CreateWellKnownSid
CryptAcquireContextA
CryptCreateHash
CryptDestroyHash
CryptGetHashParam
CryptHashData
CryptReleaseContext
DeleteService
FreeSid
GetSecurityDescriptorDacl
InitializeSecurityDescriptor
LookupPrivilegeValueA
OpenProcessToken
OpenSCManagerA
OpenSCManagerW
OpenServiceW
QueryServiceConfigW
QueryServiceObjectSecurity
QueryServiceStatus
QueryServiceStatusEx
RegCloseKey
RegEnumKeyExW
RegGetValueW
RegOpenKeyExW
RegQueryInfoKeyW
RegQueryValueExW
RegSetValueExW
RegisterServiceCtrlHandlerW
SetEntriesInAclW
SetSecurityDescriptorDacl
SetServiceObjectSecurity
SetServiceStatus
StartServiceCtrlDispatcherW
shlwapi
PathAppendW
PathCanonicalizeW
PathIsUNCServerShareW
PathQuoteSpacesW
PathRemoveFileSpecW
PathStripPathW
PathStripToRootW
PathUnquoteSpacesW
user32
LoadStringA
wsprintfW
version
GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW
shell32
SHGetKnownFolderPath
ole32
CoTaskMemFree
rpcrt4
RpcStringFreeW
UuidCreate
UuidToStringW
crypt32
CertCloseStore
CertFindCertificateInStore
CertFreeCertificateContext
CertGetNameStringA
CertGetNameStringW
CryptMsgClose
CryptMsgGetParam
CryptQueryObject
wintrust
WinVerifyTrust
kernel32
CloseHandle
CompareStringW
CopyFileW
CreateDirectoryW
CreateEventW
CreateFileW
CreateProcessW
CreateThread
CreateToolhelp32Snapshot
DeleteCriticalSection
DeleteFileW
DeviceIoControl
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleCP
GetConsoleMode
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetDriveTypeW
GetEnvironmentStringsW
GetExitCodeProcess
GetFileAttributesW
GetFileSize
GetFileType
GetFullPathNameW
GetLastError
GetLongPathNameW
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalAlloc
LocalFree
MoveFileExW
MultiByteToWideChar
Process32FirstW
Process32NextW
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
WaitForSingleObject
WaitForSingleObjectEx
WideCharToMultiByte
WriteConsoleW
WriteFile
lstrcmpiW
Sections
.text Size: 143KB - Virtual size: 143KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 56KB - Virtual size: 55KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 16B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 1.2MB - Virtual size: 1.8MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE