Behavioral task
behavioral1
Sample
2024-06-07_0358956d89b008681fc0140ced5ef5c7_ryuk.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-06-07_0358956d89b008681fc0140ced5ef5c7_ryuk.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-07_0358956d89b008681fc0140ced5ef5c7_ryuk
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Size
5.3MB
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MD5
0358956d89b008681fc0140ced5ef5c7
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SHA1
04dd00d6b4be8097be674cd35df07ce223a0ad20
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SHA256
b21ff1bac6c34d8f4d3fcbfe387a540f467b22b80b5e7cee4592db32ff3a8191
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SHA512
4bb36bfe85e5cf6abd55de10eaa7a4a490e739e4a9e100f0b8a70c9543d6a8060d7b664636d0c3e949575fac05ff4a6f55bbde22a0b2af3c4305bb61b0ad5424
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SSDEEP
98304:PJhqE6OVQWJuhswoYv5eONVJSVlnsfGm2ceemmZqAZ8a+t1Twe2505IIbsONq4AC:POE/uWJysVYvsOdknseOeehZqAqa+3TM
Malware Config
Signatures
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Detects Pyinstaller 1 IoCs
resource yara_rule sample pyinstaller -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-07_0358956d89b008681fc0140ced5ef5c7_ryuk
Files
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2024-06-07_0358956d89b008681fc0140ced5ef5c7_ryuk.exe windows:5 windows x64 arch:x64
58053a2a3020fdc7713b576ad93bf7bd
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
Imports
kernel32
GetModuleFileNameW
GetProcAddress
GetCommandLineW
GetEnvironmentVariableW
SetEnvironmentVariableW
ExpandEnvironmentStringsW
GetTempPathW
WaitForSingleObject
SetDllDirectoryW
GetExitCodeProcess
CreateProcessW
GetStartupInfoW
LoadLibraryExW
CreateDirectoryW
FormatMessageW
LoadLibraryA
MultiByteToWideChar
WideCharToMultiByte
Sleep
GetLastError
SetEndOfFile
HeapReAlloc
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetModuleHandleW
RtlUnwindEx
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetCommandLineA
ReadFile
CreateFileW
GetDriveTypeW
GetFileType
CloseHandle
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetFullPathNameW
GetFullPathNameA
RemoveDirectoryW
FindClose
FindFirstFileExW
FindNextFileW
SetStdHandle
SetConsoleCtrlHandler
DeleteFileW
GetStdHandle
WriteFile
ExitProcess
GetModuleHandleExW
GetACP
HeapFree
HeapAlloc
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetConsoleCP
CompareStringW
LCMapStringW
GetCurrentDirectoryW
FlushFileBuffers
SetEnvironmentVariableA
GetFileAttributesExW
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetStringTypeW
GetProcessHeap
WriteConsoleW
GetTimeZoneInformation
HeapSize
RaiseException
advapi32
ConvertStringSecurityDescriptorToSecurityDescriptorW
ws2_32
ntohl
Sections
.text Size: 132KB - Virtual size: 131KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 62KB - Virtual size: 61KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 44KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 7KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 172B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 21KB - Virtual size: 21KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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payload.pyc